364 articles trouvés pour ce sujet.
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Scale drawing |
2021-02-10 |
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Elias pose la question : a football field is 160m long and 120m wide .
Find the distance between its opposite corner flag posts .
use the scale of 1cm:20m Penny Nom lui répond. |
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A scale factor |
2021-02-02 |
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Layla pose la question : Beth planned to travel from Battery Park to Times Square. The distance between the two places is 2.48 inches on the map of New York City. If the scale factor used for the map was 1 mile = 0.4 inch, find the actual distance between the two tourist attractions. Penny Nom lui répond. |
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Factoring an interest formula |
2020-09-29 |
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Kenneth pose la question : Hello
P + Pr has a common factor of P so it can be expressed as P(1 + r) after the P is factored out..
How does the "P" get in front of (1 + r)?
P/P + Pr/P = 1 + r What step is used to show that P is added in front of (1 + r)?
I thank you for your reply. Harley Weston lui répond. |
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Scale factor |
2020-06-26 |
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Kinza pose la question : Hi, my question is The perimeter of a triangle is reduced from 75cm to 20cm. What is the linear scale factor? Penny Nom lui répond. |
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1 square cm is 100 square mm |
2020-06-19 |
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macie pose la question : explain why the conversion factor for cm squared to mm squared is 100 ,and not 10 Penny Nom lui répond. |
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The product of 3 integers is -24 |
2019-11-06 |
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Rick pose la question : This is a question on my sons pre-ap practice quiz.
I think that there is information missing (?)
The product of 3 integers is -24
The sum of 3 integers is -12
What are the 3 integers ?
This is exactly how it was written on his quiz paper.
I have wasted to much time on the internet, trying to find a
formula(s) to help him.
Please help me. Penny Nom lui répond. |
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The divisors (aliquot parts) of a positive integer |
2019-10-31 |
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Kenneth pose la question : Is there a fast and simple method that can be used to determine the aliquot parts, whole, positive numbers that can divide into another whole, positive number? Harley Weston lui répond. |
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The largest integer k so that that 3335^k is a divisor of 3336! |
2019-10-29 |
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Brandon pose la question : Hello my name is Brandon and I having difficulties in solving the following question: Given the number 3336! = 1.2.3.4........................3336 . What's the greater positive integer number k with the condition that 3335expk is a divisor of 3336!
Thanks for your help. Penny Nom lui répond. |
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A scale factor |
2019-03-19 |
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Miracle pose la question : A man in a photograph is 2cm tall. His actual height is 1.8m. Write a scale statement and determine the scale factor. Penny Nom lui répond. |
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Factoring n^2+3n-270 |
2019-02-11 |
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Ashley pose la question : n^2+3n-270 Penny Nom lui répond. |
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A scale factor |
2019-01-27 |
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Hannah pose la question : What is the scale factor of 36 meters and 1.5 centimeters? Penny Nom lui répond. |
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Four odd factors |
2018-07-04 |
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Manchali pose la question : Find a number that has 4 factors and all of them are odd numbers. Penny Nom lui répond. |
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Factoring a quadratic |
2018-04-02 |
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Billy pose la question : I need help factoring the following question:
4x(squared) -10x +16. Penny Nom lui répond. |
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Multiplies and factors |
2018-02-24 |
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Lil pose la question : Is a multiple the same as a factor? Penny Nom lui répond. |
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A question about perfect squares |
2018-02-04 |
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Jolyn pose la question : Find the smallest possible value of a whole number m if 648x m is a perfect square Penny Nom lui répond. |
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GCD |
2017-11-25 |
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A student pose la question : Suppose a,b, c are integers such that gcd(a,b)=gcd(a,c)=1. Show that gcd(a,bc)=1. Penny Nom lui répond. |
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Abstract algebra |
2017-11-25 |
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A student pose la question : Suppose a,b, c are integers such that gcd(a,b)=gcd(a,c)=1. Show that gcd(a,bc)=1. Penny Nom lui répond. |
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Scale factor |
2017-11-03 |
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Hannah pose la question : I do not understand it...... What is the scale factor for 9 cenimeters = 1 meter Penny Nom lui répond. |
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Factors |
2017-08-16 |
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Gemma pose la question : Why do 315 and 525 have the same number of factors? Penny Nom lui répond. |
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Factorials |
2017-07-27 |
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dinesh pose la question : Is there any shortcut formula for multiply series numbers.
like
1x2x3x4x5.......x100 =? Penny Nom lui répond. |
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Baseball Cards |
2017-04-20 |
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Raquel pose la question : A minor league baseball team gave away baseball cards to each person entering the stadium. One group receives 28 baseball cards. A second group received 68 baseball card. If each person entering the stadium receive the same number of cards, what was the greatest possible number of baseball cards that each person could have received? Penny Nom lui répond. |
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Solve 3x^2-19x-14=0 for x |
2017-03-15 |
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nick pose la question : I'm an 8th grader and am quite confused with this equation:
3x^2-19x-14=0
The answer is:
-2/3 , 7
But I'm not sure how to solve for it. Penny Nom lui répond. |
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A scale factor |
2016-04-13 |
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tonya pose la question : What is the scale factor for the two figures regular octagon with 15 and 9 written in decimal form Penny Nom lui répond. |
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The remainder theorem |
2016-03-27 |
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Pratyasha pose la question : A quadratic polynomial when divide by x+2 leaves a remainder of 1 and when divided by x-1 leaves a remainder of 4. What will be the remainder if it is divided by (x+2)(x-1)? Penny Nom lui répond. |
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An exercise with factorials |
2016-02-07 |
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vidhi pose la question : find the value of n: (1-1/2) (2-2/3) (3-3/4)...(15-15/16) = n!/16 Penny Nom lui répond. |
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A limit of a rational function |
2016-01-16 |
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selvamani pose la question : F (x) = x^3+3x^2-9x-2 / x^3-x-6 and limit x tends to 2, f (x) exist then limit x tends to 2, f (x) is equal to ? How to answer this problem. Penny Nom lui répond. |
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A volume in cubic yards |
2015-11-12 |
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James pose la question : The first formula for figuring cubic yards of concrete need is length in feet, times width in feet, times depth in actual inches, divided by 320. Such as, 150x 50 feet x 4inches divided by 320 = cubic yards. How and why does this formula work? Penny Nom lui répond. |
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Factoring a trinomial |
2015-11-02 |
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Eric pose la question : 2v(squared) +11v +5 Penny Nom lui répond. |
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Factor x^2 + y^2 |
2015-08-26 |
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Jerome pose la question : Factor: x^2+y^2 Penny Nom lui répond. |
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Factor 2(x+1)(x-3)^2-3(x+1)^2(x-3) |
2015-08-13 |
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Bella pose la question : The directions are the solve and factor the expression completely:
2(x+1)(x-3)^2-3(x+1)^2(x-3)
I was factoring out an (x+1) and and (x-3) however the answer showing in my book is different and I can't figure out what I'm doing wrong please help Penny Nom lui répond. |
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2^48 - 1 |
2015-06-13 |
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Soham pose la question : The number 2^48-1 is divisible by two numbers between 60 and 70. The sum of
the two numbers is? Penny Nom lui répond. |
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Prove that you cannot factor x squared + 5 |
2015-05-28 |
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lily pose la question : the question is: prove that you cannot factor x squared + 5 Robert Dawson lui répond. |
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The product of a 2-digit number and a 3-digit number |
2015-02-06 |
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Nathaniel pose la question : The product of a 2-digit number and a 3-digit number is about 50 000 what are the products Penny Nom lui répond. |
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2x^2-2x+1=4x+1 |
2015-02-06 |
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Caitlyn pose la question : 2x^2-2x+1=4x+1 Penny Nom lui répond. |
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Factorise 15x + 15y |
2014-11-20 |
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Jordan pose la question : hi i saw a question in class today that i didn't understand and i didn't really understand what my teacher was going on about so how do you factorise 15x + 15y Robert Dawson and Penny Nom lui répond. |
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Prime factorization in exponent form |
2014-10-31 |
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Emma pose la question : I need to find out how to make a prime factorization of 120 in exponential form. Penny Nom lui répond. |
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A factoring problem |
2014-10-05 |
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Gina pose la question : 3x^2+6x+3 Penny Nom lui répond. |
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Sieve of Eratosthenes |
2014-10-03 |
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Hope pose la question : using Sieve of Eratosthenes to determine for in instance prime numbers between 1 to 200, to what nth number should i stop?, 4th, which is 11 or what? Robert Dawson lui répond. |
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Factorials |
2014-06-06 |
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penny pose la question : What is factorial? For eg. Like 2!, 3! 4! Etc. Penny Nom lui répond. |
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Reducing the size of a poster by a scale factor of 1/3 |
2014-04-01 |
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deeshon pose la question : eric is making a smaller copy of a poster that measures 20.4 cm wide by 34.2 cm long.he reduces the original by a scale factor of 1/3.what are the dimensions of the copy Penny Nom lui répond. |
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2 rectangular prisms are similar by a scale of 0.75 |
2014-03-16 |
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gina pose la question : 2 rectangular prisms are similar by a scale of 0.75. The volume of the smaller prism is 27cm3 (cubed). How many cubic centimeters is the volume of the larger prism? Penny Nom lui répond. |
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Prime factorization |
2014-02-06 |
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Kadeejah pose la question : Write the prime factorization of 37 in exponential form Penny Nom lui répond. |
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4x^3-7x^2-2x |
2014-01-10 |
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Alvi pose la question : 4x^3-7x^2-2x Penny Nom lui répond. |
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Can 100r^2-81z^2 be factored? |
2013-12-08 |
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Rosa pose la question : Can 100r^2-81z^2 be factored? Penny Nom lui répond. |
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Factor |
2013-12-01 |
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Rosa pose la question : How do you factor 9x^2 - 12y^2? Penny Nom lui répond. |
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Factor strings |
2013-10-14 |
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Jane pose la question : What's a factor string? I'm confusey in the head. Penny Nom lui répond. |
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a cube-b cube-a+b= ? |
2013-06-16 |
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saryu pose la question : a cube-b cube-a+b= ?
find the answer Penny Nom lui répond. |
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Factor x^6 - 64 |
2013-01-25 |
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Taylor pose la question : Hi, I am having trouble factoring x^6-64. Could you help me? Penny Nom lui répond. |
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The zeros of a fourth degree polynomial |
2013-01-23 |
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Dakota pose la question : My problem has multiple steps and I have done everything but the last one. 8The original problem is f(x)=x^4-5x^3+7x^2+3x-10 and I have to find the zeros of the equation. I used synthetic substitution like my teacher taught us to get the equation of x^3-3x^2+x+5=0 but now I don't know how to get the zeros of that equation, or solve it. Penny Nom lui répond. |
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Difference of squares |
2012-11-19 |
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Qelibar pose la question : Please factorise x^2y^2 - 4 Penny Nom lui répond. |
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Factor (6a^2-5a+1)(8a^2-6a+1)(12a^2-7a+1) |
2012-11-16 |
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bailey pose la question : Factorise f(a)=(6a^2-5a+1)(8a^2-6a+1)(12a^2-7a+1)
thus find [f(a)]^1/2 Penny Nom lui répond. |
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Factoring |
2012-09-10 |
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saravanan pose la question : Dear Sir ,
I felt difficulty solving the following problem . So please help me .
a+b+c=7
ab+bc+cd= 20
what is a^2+b^2+c^2 ? Lorraine Dame and Robert Dawson lui répond. |
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Factoring |
2012-04-26 |
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Amanda pose la question : y=x^2-9x Penny Nom lui répond. |
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2x^2+5x+2 |
2012-04-23 |
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eddie pose la question : 2x^2+5x+2 Penny Nom lui répond. |
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What is the prime factor form of 7/5? |
2012-04-17 |
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David pose la question : What is the prime factor form of 7/5 Robert Dawson lui répond. |
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A number puzzle |
2012-04-07 |
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Kenya pose la question : my number is less than 25
my number of tiles will make only one rectangle
my number is odd
my number is a factor of 36 Penny Nom lui répond. |
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A cubic inequality |
2012-03-25 |
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Victoria pose la question : The flight path of a bumblebee above the ground can be modelled by the function f(x)= 2x^3- 17x^2+ 11x + 130. Where x is the time in seconds and f(x) represents the height in inches above the ground. The entrance to the bee's hive is located 100 inches above the ground. Determine when the bumblebee's height is greater than 100 inches. The bee's height was monitored from 0 to 25 seconds inclusive. (over the domain 0 Penny Nom lui répond. |
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Factoring a quadratic |
2012-03-13 |
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Makell pose la question : X^2 + 32x + 220 = 0 Penny Nom lui répond. |
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Simplify the expression |
2012-02-12 |
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Christy pose la question : Hi guys, ok so I'm having problems with solving this equation since it's been so long I've done precal.
I have to find critical points so I have to find the derivative first. This is what I've done so far
s(t)= (t-6)^4 * (t+1)^2
t'= 4(t-6)^3*(1)*(t+1)^2+ 2(t+1)(1)*(t-6)^4
so this is where I got stuck, which is the algebra part. How can I simplify this to get the answer to figure out the critical points. Penny Nom lui répond. |
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factor 6x2-19x+3 |
2011-12-10 |
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pedro pose la question : factor 6x2-19x+3 Penny Nom lui répond. |
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Reducing by a scale factor of 1/3 |
2011-11-21 |
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Sandra pose la question : A rectangle with the dimensions of 6.3 cm and 5.8 cm is reduced by a scale factor of 1/3. What are the dimensions of the new image? Penny Nom lui répond. |
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Factor |
2011-10-30 |
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Dawn pose la question : x^2 -6x+9-4y Penny Nom lui répond. |
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Expanding the size of a table |
2011-10-16 |
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Ericka pose la question : You are working as a carpenter in an industrial Shop. A customer came to you and inquired about the size of the table which would be fitted in her room. She informed you that she had already a 1.5 x 1m table in her room but she wanted to maximize the space by adding the same amount to is length and width. She is planning to occupy a 3 square meter place on her room for her to work comfortably. She is requesting you a written recommendation before she asked to make a table. What amount should be added to both sides to maximize a 3 square meter area? Penny Nom lui répond. |
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One factor array |
2011-09-16 |
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Hana pose la question : hi my brother a 5th grade have a question. this is what it say "i have only one factor array, and i am between two numbers 12 and 16. what number am i?" Penny Nom lui répond. |
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A scale of 1:160 |
2011-05-02 |
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Dave pose la question : a 4 foot by 8 foot sheet of plywood is how many acres in a scale (1:160) Penny Nom lui répond. |
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(3x+4y)^2 - (2x-y)^2 |
2011-03-16 |
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Taiwo pose la question : pls could some one help me with this question? thanks as lot
factorize:
(3x+4y)^2 - (2x-y)^2 Penny Nom lui répond. |
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Factor 10x^2+17x-6 |
2011-03-03 |
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Jeff pose la question : Factor 10x^2+17x-6 with steps and explanation. Penny Nom lui répond. |
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(1-1/2)(2-2/3)(3-3/4)...(15-15/16)=n!/16 |
2011-02-15 |
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Fiona pose la question : Could you help me find the value of n: (1-1/2)(2-2/3)(3-3/4)...(15-15/16)=n!/16 Penny Nom lui répond. |
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Factoring with fractions |
2011-02-15 |
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Megan pose la question : Hi there,
I'm working on factoring polynomials but this question has me quite puzzled.. im a college student in my first year.
(x^2-a^2/xy)(xy/x+a) Penny Nom lui répond. |
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Scale factor |
2011-01-25 |
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Mackenzie pose la question : hi my problem is:
a man that is 6 feet tall in real life and only .5 inches in a =
photograph. what is the scale factor and scale of the photograph?
another:
a girl in the same photograph is 4.8 feet tall. How tall is she in the =
picture?= Chris Fisher lui répond. |
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A scale drawing |
2010-11-17 |
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chandler pose la question : A parking lot 200 meters wide; 1 centimeter:25 meters, find the length on the scale drawing and the scale factor Penny Nom lui répond. |
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A scale factor |
2010-10-17 |
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david pose la question : We have to rectangles with measurements and we need to find the scale factor. The rectangles are W=6 L=4 for first and second is W=4 and L=3.
thanks for your help Penny Nom lui répond. |
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Rectangular arrays |
2010-09-29 |
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Kim pose la question : My 4th grader has started working on rectangular array that shows 2 factors of a number.
The problem reads on centimeter grid paper draw as many arrays as you can for each of the #'s 2,3,4, 5,6,7,,11,12,15 and 16. That would be great except I have no idea what they are talking about and I cannot offer any help to my daughter. Penny Nom lui répond. |
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Factoring cubics and quartics |
2010-09-29 |
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Tori pose la question : How do you factor these types of questions:
* x^3 - 4x^2 - x + 4
*2x^3 - 3x^2 - 4x - 6
*x^4 - 15x^2 - 16 Robert Dawson lui répond. |
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A scale model of a city |
2010-05-18 |
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Briana pose la question : Well I have to create a three dimensional city for a geometry project and it requires us to use precise scal factor and well we want to build a medium sized city but our teacher said that If we make or buildings to high our houses would look like super small compared to the tall building were trying to figure out if we were to build a medium sized city what scale factor should we use to make the houses big enough to see and design? Walter Whiteley and Tyler Wood lui répond. |
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A quartic equation |
2010-05-18 |
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Austin pose la question : Z^4-10z^2=-9 Penny Nom lui répond. |
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Adding five positive integers that have a product of 48 |
2010-04-27 |
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Lorraine pose la question : What is the smallest possible sum that can be obtained by adding five positive integers that have a product of 48. Chris Fisher lui répond. |
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Factorials |
2010-03-23 |
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Leah pose la question : When should you use factorials? Robert Dawson lui répond. |
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Factors and zeros of a polynoial |
2010-03-17 |
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Susan pose la question : find a polynomial function of degree three with -3 as a zero of multiplicity 2 and 4 as a zero of multiplicity 1. Tyler Wood lui répond. |
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Scale factor |
2010-02-02 |
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Darlene pose la question : A towers actual height is 300m. An architect makes a scale drawing using a scale factor of 0.0001
A) how tall is the tower in the drawing?
B) if the drawing was 4cm high, what would the scale factor be? Penny Nom lui répond. |
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(x+3) is a factor of 2x^3-3x^2+px+30 |
2010-01-09 |
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Ruby pose la question : (x+3) is a factor of 2x^3-3x^2+px+30.
Determine the value of p Penny Nom lui répond. |
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Factoring |
2010-01-08 |
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jim pose la question : i am having trouble with grade 12 factoring in general, i just do not understand it, please help! here is and example of a question:
12ac+28bc-3ad-7bd and it gets tougher from there like 7a(squared)-14ab+7b(squared) any help is greatly appreciated Stephen La Rocque lui répond. |
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The tens digit of 0! + 1! + 2! + 3! + ... + 2000! |
2009-12-21 |
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Alicia pose la question : What is the tens digit of 0! + 1! + 2! + 3! + ... + 2000!? Robert Dawson and Penny Nom lui répond. |
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Factoring |
2009-11-19 |
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danyelle pose la question : 81x^2+36x+4
factoring i dont understand it at all Robert Dawson lui répond. |
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Factors |
2009-10-30 |
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brenden pose la question : The numbers 3,5,7 are factors of n. Find four other factors of n besides 1 Penny Nom lui répond. |
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An array |
2009-10-28 |
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felicia pose la question : what factors are shown in the array below?
**
**
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**
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** Penny Nom lui répond. |
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Constructing a scale model |
2009-09-27 |
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Colleen pose la question : What is the formula i need to use to find out how to state a reasonable scale in the question below;
Suppose you were constructing a model that must sit on a piece of cardboard that is 22cm by 28cm. STATE THE REASONABLE SCALE that you can use to build a model to represent the following items. Determine the dimensions of the model.
a) a rectangular prism with a length of 5m and a width of 2m? Penny Nom lui répond. |
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What is my number? |
2009-09-18 |
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Hanna pose la question : What is my number?
My number is a perfect square.
The only number in its prime factorization is 2.
My number is a factor of 32.
The sum of its digits is odd. Penny Nom lui répond. |
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Exponential form |
2009-08-31 |
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cecil pose la question : what is the exponent form 564000? Stephen La Rocque and Harley Weston lui répond. |
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Factoring |
2009-08-23 |
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Bj pose la question : Solve for x: 5x^2 - 35x = 0 Stephen La Rocque lui répond. |
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HCF |
2009-08-03 |
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Nazrul pose la question : If (x+ a) be the H,C.F. of x^2+px+q and x^2+mx+n, prove that (p-m)a=q-n Stephen La Rocque lui répond. |
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Dimensions |
2009-07-29 |
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Deborah pose la question : The blueprint for landscaping a yard has a scale of 1/2" to 1 foot. If the blueprint is a rectangle 18 inches by 22 inches, what are the dimensions of the yard? Robert Dawson lui répond. |
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Highest Common Factor of Two Polynomials |
2009-07-28 |
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Nazrul pose la question : If x+a be the h.c.f. of x^2+px+q and x^2+mx+n, how can I prove that (p-m)a=q-n. Robert J. Dawson & Janice Cotcher lui répond. |
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Using the Remainder Theorem to Find an Unknown Coefficient. |
2009-07-06 |
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Mukulu pose la question : What is the value of a if 2x2-x-6 ,3x2-8x+4 and ax3-10x-4 have a common factor. Janice Cotcher lui répond. |
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Factoring a quadratic |
2009-06-16 |
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Rebecca pose la question : solve the quadratic equation by factoring.
a) x(squared)+7x+10=0 Stephen La Rocque lui répond. |
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The last non cero digit of a factorial |
2009-06-12 |
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Wilson pose la question : How can I find the last non cero digit from a factorial calculation of a big number.
For example 10! = 3628800, the last non cero digit is 8.
What is the last non cero digit of 10! ?? Robert Dawson lui répond. |
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how do I factor 45 - 5x^2 |
2009-05-31 |
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tracey pose la question : how do I factor 45 - 5x^2 Penny Nom lui répond. |
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Factor 6x^2+19x+3 |
2009-05-26 |
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michele pose la question : how do you factor this trinomial. 6x^2+19x+3 Penny Nom lui répond. |
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Find out the length of a cup when its volume is halved |
2009-05-25 |
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Thomas pose la question : I'm having trouble with a question.
What kind of formula would i use to find out the length of a cup when its volume is halved? Stephen La Rocque lui répond. |
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The dimensions of a larger cup |
2009-05-23 |
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Elizabeth pose la question : Hey
If i have a cup that holds a volume of 477mL and the bottom radius is 2.8cm and the top radius is 4.9cm and the height is 10cm. If i increase the volume by one and a half times what is the new measurements if the cup is directly proportional to the first one.
Thank you Stephen La Rocque and Penny Nom lui répond. |
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Factor x squared(x-3)+(x-3) |
2009-04-19 |
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Victor pose la question : How do I factor x squared(x-3)+(x-3) ? Harley Weston lui répond. |
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Find a polynomial function with the indicated zeros and satisfying the given conditions |
2009-03-23 |
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Kristen pose la question : Find a polynomial function with the indicated zeros and satisfying the given conditions. Simplofy your answer (no imaginary numbers or parentheses in the answer)
Zeros: 1+2i, 1-2i, 5 ; f(-2)=1 Harley Weston lui répond. |
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Surface area and scale factors |
2009-02-21 |
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tina pose la question : the surface area of a sphere is about 86 ft (2) find the surface area of a larger sphere that has a scale factor of 4 Penny Nom lui répond. |
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The sequence 2n! - 1 |
2009-02-01 |
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Penny pose la question : I am trying to help my son with this problem. Find the first five terms of the sequence that can be written from the formula A= 2n !-1. Penny Nom lui répond. |
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How many students were there |
2009-01-25 |
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sooos pose la question : After a math lecture in university, the students go to the cafeteria. EACH ONE of them buys a cheese sandwich and a cup of tea. They ALL pay $18.49. How many students were they? Chris Fisher lui répond. |
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Perimeters and scale factors |
2009-01-24 |
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dennis pose la question : I have this work that says how are the value of the ratios for the perimeters related to the scale factor? PLEASE HELP ME OUT Harley Weston lui répond. |
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The tens digit of 0! + 1! + 2! + 3! + 4! .............+9999! + 10000! |
2009-01-23 |
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Kaylyn pose la question : determine the tens digit for the expression:
0! + 1! + 2! + 3! + 4! .............+9999! + 10000! Robert Dawson and Penny Nom lui répond. |
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Factor x^2 - y^2 |
2009-01-20 |
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Shell pose la question : complete Factor: x^2-y^2 Penny Nom lui répond. |
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The factors of an integer |
2009-01-06 |
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Madison pose la question : what are the factors of 878 Robert Dawson lui répond. |
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Do all square numbers have an odd number or factors? |
2008-12-11 |
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Amy pose la question : Do all square numbers have an odd number or factors? Victoria West lui répond. |
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Factor 9x^2 + 6x + 4 |
2008-11-21 |
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Jonah pose la question : how can i solve this by factoring: 9x^2 + 6x + 4 Harley Weston lui répond. |
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Factoring |
2008-11-19 |
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Neji pose la question : How do you factor (y-z) (y+z) (y^4+y^2z^2+z^4) and get (y+z)(y^2-yz+z^2) (y-z) (y^2+yz+z^2) as the answer? Harley Weston lui répond. |
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Real and imaginary zeros |
2008-11-12 |
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David pose la question : Find all the real and imaginary zeros for each polynomial. Factor each polynomial. Leave factors with imaginary zeros in quadratic form.
h(x)= x^5 +2x^4 - 10x^3 -20x^2 +9x + 18 Harley Weston lui répond. |
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The prime factorization of one billion |
2008-11-02 |
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Alta pose la question : The prime factorization of 1000 is 2 cubed times 5 cubed. How do you write the prime factorization of one billion using exponents? Penny Nom lui répond. |
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2x^3+x^2-2x-1=0 |
2008-10-26 |
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bobby pose la question : 2x^3+x^2-2x-1=0 Penny Nom lui répond. |
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Factor completely |
2008-10-22 |
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Monica pose la question : I have to factor the following two items completely, but I am lost. I've tried factoring by substitution and grouping but they don't seem to work:
1. 5(w-3z) -10(w-3z)=
2. ab-21+a3-b7= Penny Nom lui répond. |
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Prime factorization |
2008-10-19 |
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nick pose la question : while im doing prime factorization for one number and it cant be divided 2,3 or five so what next? Penny Nom lui répond. |
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a(a+1) - b(b+1) |
2008-09-30 |
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Shaun pose la question : I need to factor (a-b) out of the following: a(a+1) - b(b+1). I know it is simple but I cannot remember how. Penny Nom lui répond. |
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Number of factors |
2008-09-18 |
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Austin pose la question : I am stuck on finding what type of number has exactly two factors and
what type of number has an odd number of factors? I need some examples. Penny Nom lui répond. |
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Simplifying Algebraic Expressions |
2008-08-22 |
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Jacky pose la question : x^2-y^2+4x+4y Penny Nom lui répond. |
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Factoring x^2 + 729 |
2008-08-19 |
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peter pose la question : hello I,am having trouble factorising a polynomial into polynomial factors
with real coefficients please can you help the polynomial is x^2+729 Harley Weston lui répond. |
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Product of Two-Digit Numbers |
2008-07-31 |
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pete pose la question : The number 4641 can be expressed as the product of two two-digit whole numbers. What is the sum of these two numbers? Janice Cotcher lui répond. |
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Factoring a quadratic trinomial |
2008-07-21 |
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Jeff pose la question : c^2+4c+4
x^2-7x-18 Penny Nom lui répond. |
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Number of factors |
2008-07-20 |
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pete pose la question : how do you find the number of factors in a really big number without using a factoring program or listing the out? Penny Nom lui répond. |
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n choose r equals n-1 choose r plus n-1 choose r - 1 |
2008-07-14 |
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fae pose la question : Prove that
( n ) = ( n – 1) + ( n - 1 )
( r ) ( r ) (r-1)
NOTE: the ( ) should be one for n taken r and so on. but there is no one big ( ) that will cater two lines Janice Cotcher lui répond. |
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What is the largest perfect square factor of 1512? |
2008-07-02 |
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peter pose la question : What is the largest perfect square factor of 1512? Penny Nom lui répond. |
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The square root of (18*n*34) |
2008-07-01 |
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Peter pose la question : What is the least possible positive integer-value of n such that square root(18*n*34) is an integer? Penny Nom lui répond. |
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How many positive integer factors of 2^2*3^2*5 are multiples of 12? |
2008-06-27 |
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Peter pose la question : How many positive integer factors of 2^2*3^2*5 are multiples of 12 Janice Cotcher lui répond. |
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4x^3 - 6x + 2 = 0 |
2008-05-28 |
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paul pose la question : 4x^3 - 6x + 2 = 0 Janice Cotcher lui répond. |
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Scale factor |
2008-05-28 |
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Riley pose la question : I have a math problem, and a big test coming up on Friday or Thursday (my teacher hasn't decided yet.) I need help understanding how
I would do this problem. Here it is: they wanted me to find the perimeter and area of a rectangle when they only give me the scale factor. I've
delt with scale factors before, but this is quite confusing. I have done the scale factor way by having a rectangle that maybe has a width of 10 and a
height of 20, and I needed to find what the scale factor would be for a rectangle with the width of 5 and a height of 10. I know that they scale factor
would be 2, right? But this just gives me the scale factor, and I have to FIND the perimeter and area. Hopefully you can get back to me tonight. Harley Weston lui répond. |
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The area of a rectangle |
2008-05-27 |
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Becky pose la question : the area of a rectangular lot is represented by 6t^2+13t-5. What are the length and the width of the rectangular lot? Harley Weston lui répond. |
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Prime factors |
2008-05-21 |
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john pose la question : the first 5 prime numbers are 2,3,5,7,11. which is the smallest number that has these prime factors. Stephen La Rocque lui répond. |
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The factor theorem |
2008-05-06 |
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Nomaan pose la question : factorise
x³-2x²-x+2
using factor theorem Penny Nom lui répond. |
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Factor ac^2 - a^3 - a^2b + ab^2 + b^3 - bc^2 |
2008-05-05 |
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erson pose la question : factorize:
ac^2 - a^3 - a^2b + ab^2 + b^3 - bc^2 Harley Weston lui répond. |
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(9x^2-4)/(3x^2-5x+2) * (9x^4 - 6x^3 +4x^2)/(27x^4+8x) |
2008-04-29 |
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Jonathon pose la question : I don't remember how to solve an equation in the form of the following:
(9x^2-4)/(3x^2-5x+2) * (9x^4 - 6x^3 +4x^2)/(27x^4+8x) = Stephen La Rocque lui répond. |
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The ratio of their perimeters to two regular hexagons |
2008-04-29 |
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td pose la question : Two regular hexagons have areas of 54 square root of 3 and 150 square root of 3, what is the ratio of their perimeters? Stephen La Rocque lui répond. |
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Factor and solve s1^2 - 10s1 - 200 = 0 |
2008-04-29 |
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KIM pose la question : please factor and solve s1^2 - 10s1 - 200 = 0 Stephen La Rocque and Penny Nom lui répond. |
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The zeros of a cubic |
2008-04-09 |
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Ryan pose la question : what are all the zeros of f(x)= x^3-1/2x^2+1/3x-1/6 Penny Nom lui répond. |
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Factor 2x^3 + 3x^2 - 32x + 15 |
2008-04-02 |
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sarah pose la question : I have a course review I'm working on and I'm not sure how I'm supposed to factor the following
2x^3 + 3x^2 - 32x + 15. Penny Nom lui répond. |
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The number of positive integer factors |
2008-04-02 |
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lisa pose la question : If n is a positive integer such that 5n has 36 positive factors, and 3n has 40 positive factors:
How many positive factors can 15n have? How many values are possible for n? Penny Nom lui répond. |
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(x-3)/(x-cube+6x-square-25x-150) |
2008-03-24 |
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rafia pose la question : (x-3)/(x-cube+6x-square-25x-150) Penny Nom lui répond. |
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How would I factor 2x^3 + 11x^2 - 7x - 6? |
2008-03-22 |
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Sean pose la question : How would I factor this polynomial?
2x^3 + 11x^2 - 7x - 6 Stephen La Rocque lui répond. |
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How would I graph: x - 2 divided by x^2 - 4? |
2008-03-19 |
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Sean pose la question : How would I graph: x - 2 divided by x^2 - 4 using a method in extreme values of
functions or completing the square
x - 2/ x^2-4 Stephen La Rocque lui répond. |
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Graph the equation P(x)= x^3 + x^2 -12x |
2008-03-18 |
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Sean pose la question : I want to graph the equation : P(x)= x^3 + x^2 -12x I was thinking that I would combine
the x-values, but then I could not use the complete the square technique. Would I have to
just solve the second half of the equation and then graph x^3 seperately Penny Nom lui répond. |
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A dilation project |
2008-03-12 |
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john pose la question : I am working on a dilation project.
How do I dilate an irregular octagon on a scale of 3.5 Stephen La Rocque lui répond. |
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Factor x^6-5x^3+25 |
2008-03-11 |
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jacob pose la question : how do you factor equations for algebra 2
x^6-5x^3+25 Harley Weston lui répond. |
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The dimensions of a rectangle |
2008-03-06 |
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Julie pose la question : Find the dimensions of a rectangle with an area of 400. Width x ft.
Length (2x-7)ft. Stephen La Rocque and Penny Nom lui répond. |
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Two regular pentagons |
2008-02-27 |
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Shirley pose la question : Regular pentagon QRSTU has a side length of 12 centimeters and an area of
248 square centimeters. Regular pentagon VWXYZ has a perimeter of 140
centimeters.
I need to find its area. Stephen La Rocque lui répond. |
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Factoring a trinomial |
2008-02-20 |
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Adrienne pose la question : a field an rea of (x^2+x-6) square metres. State expressions for its length and width. Penny Nom lui répond. |
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Growth factor and growth rate |
2008-02-13 |
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william pose la question : what is the difference between growth factor and growth rate? Stephen La Rocque and Harley Weston lui répond. |
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Scale factors |
2008-02-13 |
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Dayne pose la question : My teacher doesn't now how to teach us scale factors and i have a problem to make it easier to understand. The problem is: A map of Levi's property is being made with a scale of 2 cm : 3 meters. What is the scale factor? Stephen La Rocque lui répond. |
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5x squared - 15x - 200 |
2008-02-11 |
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Catherine pose la question : I am having a problem solving this question:
5x squared - 15x - 200 Penny Nom lui répond. |
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5x^2 - 45 |
2008-02-11 |
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Tiana pose la question : factor:
5x^2 - 45 Stephen La Rocque lui répond. |
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Sum of factorials |
2008-01-26 |
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Emily pose la question : What is the tens digit in the sum 7! + 8! + 9! ... + 2006! Stephen La Rocque lui répond. |
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(303,000,000,000,303x3,300,000,033)/1,000,100,010,001 |
2008-01-13 |
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Adrian pose la question : Give the result of the following computation as an integer.
(303,000,000,000,303x3,300,000,033)/1,000,100,010,001
N.B. No calculators allowed Penny Nom lui répond. |
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Factoring x^2 + 25 |
2008-01-04 |
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Geri pose la question : what does x squared plus twenty five factor out to? Penny Nom lui répond. |
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A bronze statue is made in two sizes. |
2007-12-17 |
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Sara pose la question : Hello!
A bronze statue is made in two sizes.
The taller statue is 15 cm high and the shorter one is 9 cm high.
The taller statue weighs 3.75 kg. What is the weight of the shorter statue? Penny Nom lui répond. |
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What length scale factor should he use? |
2007-12-16 |
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Lisa pose la question : Hi! Joe wants to enlarge a picture so that its area is doubled.
What length scale factor should he use? Penny Nom lui répond. |
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8^2+64^2 |
2007-11-12 |
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Daniel pose la question : I am having trouble factoring equations like 8^2+64^2, I just don't know
the correct steps to get the answer. Penny Nom lui répond. |
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Prime factorization |
2007-11-11 |
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jeff pose la question : find the prime factorization and use exponential notation for 432 Penny Nom lui répond. |
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13 year and 17 year locusts |
2007-10-12 |
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stefan pose la question : how many years pass between the years when both 13 year and 17 year locusts are out at the same time? Penny Nom lui répond. |
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What is a friendly Factor? |
2007-10-12 |
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Christine pose la question : Hi mi niece and I are trying to figure out what friendly factors are. An example of one of the questions: Use friendly factors to multiply the following. 8x25=.
Can you please help? thank you Penny Nom lui répond. |
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Simplifying rational expressions |
2007-10-09 |
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Bama pose la question : x(x-2)+1 divided by x^2-3x+2 Stephen La Rocque lui répond. |
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Factoring quadratics |
2007-10-09 |
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Abbie pose la question : I have two problems same topic. I belive they cannot be factored but i want to make sure.
x2+6x-40
x2-20x+99 Penny Nom lui répond. |
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Finding the last non-zero digits of large factorials |
2007-10-04 |
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Mukesh pose la question : i have to find last five non zero digits of integer which can be very large (
upto 10^12) . i can find last non zero digit of of any factorial. Now my problem is that
i have to find last five non zero digit of factorial and also i want to general method for
last K non zero digits of factorial n. For example 10!=3628800 so last non zero digit is 8 ,last two
non zero digit is 88 .....and last five non zero digit is 36288. Victoria West lui répond. |
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8x^3 + 4x -3 |
2007-10-02 |
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Indrajit pose la question : 8x^3 + 4x -3 Stephen La Rocque lui répond. |
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What are the factors of 111? |
2007-09-13 |
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Miska pose la question : What are the factors of 111? Penny Nom lui répond. |
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The factors of 35 |
2007-09-11 |
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johh pose la question : wats the factors for 35 Penny Nom lui répond. |
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Find All 24 Factors Of 360 |
2007-09-08 |
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Jennifer pose la question : Find All 24 Factors Of 360 Penny Nom lui répond. |
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Prime factors in exponential form |
2007-09-06 |
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Michelle pose la question : how would you write this: factor 48 as a product of primes written in exponential form Stephen La Rocque lui répond. |
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Factoring a quadratic |
2007-09-04 |
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Arlene pose la question : Question from arlene, a student:
x^+2x-24=0 Stephen la Rocque lui répond. |
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Factor completely 2x^2-3x-5 |
2007-08-28 |
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melissa pose la question : how do you factor this completely:
2x^2-3x-5 Stephen La Rocque and Penny Nom lui répond. |
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Common factors |
2007-08-19 |
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John pose la question : I have problem factorising 2p^3 - 34p. Please advise me. Leeanne Boehm, Steve La Rocque and Penny Nom lui répond. |
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10r^2 - 35r = 0 |
2007-08-13 |
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Aranxa pose la question : how do u solve this equation by factoring:
10r^2 - 35r = 0 Penny Nom lui répond. |
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Can you solve this by factoring? 10r^2 - 35r = 10 |
2007-08-12 |
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Aranxa pose la question : how do u solve this equation by factoring:
10r^2 - 35r = 10 Stephen La Rocque lui répond. |
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Factorial fraction |
2007-08-03 |
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Sekhoane pose la question : Expand completely: (N-2)!/N!(9N-1)! Stephen La Rocque lui répond. |
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A model for a building |
2007-07-17 |
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Carl pose la question : A model for a building is 50 centimeters long, 38 centimeters wide, and 225 centimeters tall
on model 1 centimeter represents 2.5 meters.
I need to find the volume of the actual building in cubic meters,and the surface area of the building including
ceilings and floors. round to the nearest tenth of a square meter. Harley Weston lui répond. |
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An odd number with 12 factors |
2007-06-27 |
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Wilson pose la question : Do you know of any odd number that has 12 factors? Reply back today.
Because I have hand in a project tomorrow. Stephen La Rocque and Harley Weston lui répond. |
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Factor X^6 - 64 |
2007-06-20 |
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Krystal pose la question : How do I Factor X^6 - 64 into linear factors? Penny Nom lui répond. |
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Simplifying a quartic rational expression using long division |
2007-06-14 |
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Megan pose la question : x+2/12x^4+17x^3+0x^2+8x-40= Stephen La Rocque and Penny Nom lui répond. |
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Converting dollars to gallons |
2007-06-12 |
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Cynthia pose la question : How do I solve this problem?
If a family uses .20 per 100 gallon of water. How many gallons would
$10.00 cost, divided amoung 3 people?
Thanks, Cynthia Stephen La Rocque lui répond. |
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Finding the area of a lot without knowing the angles |
2007-06-05 |
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Cristin pose la question : I have a land-locked piece of land. I need to know the square
footage in order to determine the acreage. My deed only gives the lengths of its five sides. Stephen La Rocque lui répond. |
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Factor Completely |
2007-05-29 |
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Ema pose la question : Question 1:
Factor completely.
3x(x – 4) + 5(x – 4)
Question 2:
Factor completely.
x^2 + 2x + 3 Penny Nom lui répond. |
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A scale factor |
2007-05-28 |
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Chandler pose la question : I am rather confused about finding the area of a triangle they give me the area of the larger triangle it is 25 units but I can't figure out how to find the area of the smaller triangle the scale is 3:5 please help me ASAP. Thanks so much I really appreciate it oh the triangles are similar Stephen La Rocque and Penny Nom lui répond. |
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Factoring a trinomial in two variables |
2007-05-23 |
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Ema pose la question : How do you factor this completely. x^5y^3-3x^4y^2-28x^3y Stephen La Rocque lui répond. |
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Combinations |
2007-05-09 |
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Michael pose la question : Show that 5 X C(n,5) = n X C(n-1,4) Stephen La Rocque lui répond. |
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Probability of getting an A |
2007-05-09 |
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Christine pose la question : In a class of 15 people, exactly 3 got an A. If 2
people are randomly chosen from this class, what is the probability that
at least one of these 2 got an A? Paul Betts lui répond. |
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Factor by grouping |
2007-04-16 |
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Vincent pose la question : How do you factor
the ( ) are exponents
4b4b(3)+ a(2)b - 4a - ab(4)
I still don't understand if there is no a in 4b4b Penny Nom lui répond. |
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Factoring by grouping |
2007-04-13 |
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vincent pose la question : How would you factor
the number in ( ) are exponents
2b(3)+3a(3)+3ab(2)+2a(2)b =
and
4b4b(3)+a(2)b - 4a - ab(4) = Haley Ess lui répond. |
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Reducing the over all size of a irregular pentagon |
2007-04-11 |
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Gilbert pose la question : I'm having trouble figuring out how to reduce the over all size of a irregular pentagon.
The pentagon I'm trying to reduce has 2 right angles adjacent to each other.
Basically the shape of a house. I have width, length of the legs and the height of the peak.
But cannot figure out how to get the size of a reduced version that keeps the same proportion
and angles.
Thanks
Gilbert Penny Nom lui répond. |
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Factoring a trinomial |
2007-03-27 |
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Kim pose la question : Hi, could you please help me solve this.
3x(squared) +20x - 7 Leeanne Boehm lui répond. |
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n-1/(n+1)! + n+1/n! |
2007-03-18 |
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Cody pose la question : How do you go about simplifying something like this;
n-1/(n+1)! + n+1/n!? Steve La Rocque and Claude Tardif lui répond. |
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(x+2) is a factor of x^3+bx^2-14x+24. Find the value of b? |
2007-03-11 |
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victoria pose la question : hi my names victoria and i have been stuck on this question for ages can you please help me! (x+2) is a factor of x^3+bx^2-14x+24. Find the value of b? Penny Nom lui répond. |
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If the product of A,B,C is 15834, what is A+B+C? |
2007-03-10 |
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rachel pose la question : if the product of A,B,C is 15834, what is A+B+C? Penny Nom lui répond. |
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What exactly is a factor of a number? |
2007-03-04 |
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ASHLEY pose la question : What exactly is a factor of a number? Penny Nom lui répond. |
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The factor theorem |
2007-03-04 |
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Sophia pose la question : hi this is sophia, 10th grade from the philippines. im really having a hard time in factor theorem im just asking if you could help me solve these problems because i really dont have an idea on how to do solve these.. please
find the values of A and B so that (x+3) (x-2) are both factors of x^3+Ax^2+Bx-12
and
find the values of A, B, and C so that (x-3) (x+1)and (x-2) factors of P(x)=x^4+Ax^3+Bx^2+Cx+12
please help me.. i really do not understand these problems Penny Nom lui répond. |
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Factoring polynomials |
2007-02-14 |
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Joe pose la question : I am in the eighth grade, and we are learning the equivalent of Algebra 2. I have no ides how to factor (x-2)(x^2-1)-6x-6 You help is most aprreciated. Thank you! Joe Stephen La Rocque lui répond. |
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Greatest common factor |
2007-01-26 |
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Alexis pose la question : What is the greatest common factor of 52,and 100? Penny Nom lui répond. |
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Factoring m^4-9^n |
2006-12-07 |
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Josh pose la question : I can not figure out how to completely factor m^4-9^n. Penny Nom lui répond. |
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Factors |
2006-11-22 |
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Jacqueline pose la question : Why do the numbers 16,36,48,60,64,90 and 100 have an odd number of factors? Stephen La Rocque and Penny Nom lui répond. |
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How do I factor 10x^2 + 17x + 6? |
2006-11-21 |
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Sheldon pose la question : How do I factor 10x^2 + 17x + 6? Penny Nom lui répond. |
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Scale factors and ratios |
2006-11-19 |
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Maggie pose la question : I have a BIG math test coming up, and it's about scale factors and ratios, but i don't understand them at all. How can you tell the difference between scale factors and ratios? and How are they used in the everyday world? Penny Nom lui répond. |
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When kx^2+3x+1 divided by (x-2) the remainder is 3 |
2006-11-09 |
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Brianna pose la question : For the dividend, find the value of k if the remainder is 3. (kx^2+3x+1) divided by (x-2) Penny Nom lui répond. |
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The sum of two numbers is 30 |
2006-11-03 |
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GG pose la question : The sum of two numbers is 30 and the product of the same two numbers is 221. Find the two numbers. Stephen La Rocque lui répond. |
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An odd number of factors |
2006-10-28 |
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Anthony pose la question : What is the common name used for numbers that have an odd number of factors? This answer should be a two word answer only. Stephen La Rocque lui répond. |
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The greatest common factor |
2006-10-17 |
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Myrna pose la question : What is the greatest common factor of 49,164 and 80,860 Stephen La Rocque lui répond. |
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X^1/3-X^1/9=60 |
2006-09-26 |
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Harini pose la question : I need the answer for
The value of X in X^1/3-X^1/9=60. Penny Nom lui répond. |
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How do i factor x^3 - 6x^2 + 8x |
2006-09-10 |
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Lauren pose la question :
how do i factor
x3 - 6x2 + 8x
Stephen La Rocque lui répond. |
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How many total worker are in the factory? |
2006-08-26 |
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Sherine pose la question : One quarter of the workers at the factory are clerical, one fifth are technical, half are are administrative,and the remaining 25 are managerial.
How many total worker are in the factory? Penny Nom lui répond. |
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Find the divisors |
2006-08-21 |
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Minh pose la question : Using combination or permutation or both, find the
a. Divisors
b.even divisors
of 2160 Stephen La Rocque and Penny Nom lui répond. |
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When 391758 and 394915 are divided by a certain three digit number, ... |
2006-07-26 |
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Nick pose la question : When 391758 and 394915 are divided by a certain three digit number, the three digit reminder is the same in each case. Find the divisor. Chris Fisher and Steve La Rocque lui répond. |
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The greatest common factor of two numbers |
2006-07-16 |
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Fadwa pose la question : What is the greatest common factor(GCF) of the following algebraic expressions? 1680 and 6048
Stephen La Rocque lui répond. |
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Factor 81x^4 - 72x^2 + 16 |
2006-06-19 |
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Jesse pose la question :
how would i factor this?
81x4 - 72x2 + 16
Penny lui répond. |
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How many numbers are relatively prime with 250? |
2006-04-19 |
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David pose la question : How many positive integers less than or equal to 250 are relatively prime with 250? Stephen La Rocque lui répond. |
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How to find the odds for a lottery jackpot |
2006-04-12 |
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Harvey pose la question : Is it best to use factorials to calculate the odds of winning a lottery, such as the MegaMillions that is popular in the US, or is there a better way? Stephen La Rocque lui répond. |
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x^2+2x-3 is a factor f(x)=x^4+2x^3-7x^2+ax+b |
2006-04-06 |
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Maha pose la question : Given that x2+2x-3 is a factor f(x)=x4+2x3-7x2+ax+b, find a and b and hence factor f(x) completely. Penny Nom lui répond. |
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A scale factor |
2006-03-25 |
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Jackie pose la question : I need a formula or step by step help to show my child how to find missing dimensions for example: The scale factor for a model is 10 inches = ________ feet
Model 39.7 in
Actual 11.9 ft Penny lui répond. |
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GCD |
2006-03-20 |
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Jana pose la question : How can i prove:
if gcd(a,b)=1 then gcd(a+b,ab)=1 Penny Nom lui répond. |
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f(x) is a polynomial of degree 3. |
2006-03-13 |
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Meadow pose la question : f(x) is a polynomial of degree 3. It leaves a remainder of 10 and 4 when divided by
x + 1 and x - 2 respectively. Given also that f(1) = f(-2) = 0, find the remainder when
f(x) is divided by x - 3. Penny Nom lui répond. |
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Factor |
2006-03-08 |
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Brad pose la question : Factor:
x3 + 64m3 and 125p3 - q6 Penny Nom lui répond. |
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Factors of a cubic |
2006-03-08 |
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Skye pose la question : Show that (x+2) is a factor of f(x) where:
f(x) = px3 + (4p+2)x2 + (5p+4)x + 2p
Find the range of values for which the equation f(x) = 0 has 3 distinct real roots Penny Nom lui répond. |
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The quadratic formula |
2006-03-03 |
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Miriam pose la question : Please show work and indicate "answer", using the quadratic formula -
(x+2) (2x+3) = 6 penny Nom lui répond. |
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6y^10 + 19y^5 + 14 |
2006-03-02 |
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Bahija pose la question : Factor 6y10 + 19y5 + 14 Penny Nom lui répond. |
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X^2 + 4X + 6 is a factor of X^4 + rX^2 + s |
2006-02-11 |
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Katie pose la question : If X2 + 4X + 6 is a factor of X4 + rX2 + s, then find the value of r+s? Steve La Rocque and Penny Nom lui répond. |
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How many divisors does the number 138600 have? |
2006-02-08 |
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Joe pose la question : How many divisors does the number 138600 have? Steve La Rocque and Penny Nom lui répond. |
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Highest common factor |
2006-02-06 |
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Sajid pose la question :
1.A rectangular field has dimensions 156 m and 84 m. It is to be fenced with wire netting supported by stakes, equally spaced, a stake being placed at each corner of the field. What is the greatest possible distance between any two stakes, given that it should be more than 2 m and less than 8 m?
2. What is the length of the side of the largest square tile which can be used to cover a floor 525 cm long by 275 cm wide without leaving a gap?
3. Find the greatest number which will divide 140 and 249 to leave remainders 8 and 18 respectively?
4. Find the greatest number which will divide 304 and 298 so as to leave remainder 4 in each case.
Penny Nom lui répond. |
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Prove that p^n >= (p!)/(p-n)! |
2006-02-02 |
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Rhydian pose la question :
PROVE:
pn >= (p!)/(p-n)!
Penny Nom lui répond. |
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Four people are in a race |
2006-01-26 |
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Tammy pose la question : If 4 people are in a race, how many different placements, i.e., 1st, 2nd, 3rd, 4th, can there be and what is the equation? Penny Nom lui répond. |
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5x^2 - 27x - 18 |
2006-01-13 |
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Katy pose la question : How would you factor 5x2 - 27x - 18? Penny Nom lui répond. |
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GCF, LCM, primes and the ladder method |
2006-01-07 |
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Linda pose la question : How would I teach both finding the GCF and LCM with prime factors...I recall the ladder method vaguely.??? Penny Nom lui répond. |
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3x^4 - 81 |
2006-01-02 |
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Julio pose la question : How can I factor the following?:
3x4 - 81 Penny Nom lui répond. |
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LCM |
2005-12-12 |
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Alex pose la question : what is the LCM of 210 and 54 and the LCM of 42 and 126 Penny Nom lui répond. |
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Numbers with exactly 5 divisors |
2005-11-23 |
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Mary Lou pose la question : Show the 10 numbers with exactly 5 divisors. Penny Nom lui répond. |
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Factoring quartics |
2005-11-13 |
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Kyle pose la question : How do I factor y4 + y2 +1?? I think the answer is (y2 + y + 1)(y2 - y + 1), but I'm not sure how to get that... Chris Fisher lui répond. |
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Factoring |
2005-10-30 |
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A student pose la question : Factor 18x3 y3 + 12xy2 Penny Nom lui répond. |
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Divisibility by each of the first ten counting numbers |
2005-10-17 |
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Simon pose la question : determine smallest positive integer that is divisible by each of the first ten counting numbers Penny Nom lui répond. |
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The remainder theorem |
2005-10-07 |
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Ron pose la question : If f(x) is divided by (x-3), the remainder is 5, and if it is divided by (x+1), the remainder is -3. Find the remainder when f(x)is divided by (x-3)(x+1). Chris Fisher lui répond. |
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An odd number of factors |
2005-10-06 |
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Ramneek pose la question : What is the common name used for numbers that have an odd number of factors? Claude Tardif lui répond. |
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How do you solve 3x^2 + x - 2 = 0 |
2005-09-15 |
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Lizzy pose la question : How do you solve 3x2 + x - 2 = 0 Penny Nom lui répond. |
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A quadratic |
2005-09-06 |
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Ginger pose la question : I took a pre alg test today. There was a question on it that I am not sure and is bothering me. Can you tell me the answer?
x square + 13 + 14
Factor this Penny Nom lui répond. |
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Which number is greater? |
2005-08-18 |
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Dante pose la question : Which number is greater: 888....88 X 333...33 or 444.......44 x 666........67 (each of the numbers has 1989 digits)? Claude Tardif lui répond. |
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An algebraic remainder |
2005-06-22 |
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Raymond pose la question : Given that 4x3 - kx is divisible by 2x+1, find the remainder when the expression is divided by 4 - x2. Penny Nom lui répond. |
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Factoring |
2005-05-20 |
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Abraham pose la question : Can you please explain to me how to factor completely the following problem:
(sqrt(x+1))-((x2+2x+1)( -7/4)). Penny Nom lui répond. |
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16x^2+20x-12x-15 |
2005-05-03 |
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Tanya pose la question : how they got (4x+5)(4x-5) from
16x2+20x-12x-15=4x(4x+5)-3(4x+5)=(4x+5)(4x-5) Penny Nom lui répond. |
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A 3-digit product |
2005-02-25 |
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A student pose la question : I have an odd 3- digit product. My factors are a 1 digit number and either a 2 or 3 digit number. My factors are odd, but neither is 1. Find my factors and my product. Penny Nom lui répond. |
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Factoring a cubic |
2005-02-20 |
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Abraham pose la question : How would you factor completely,
x3-x2+5x-5? Claude Tardif lui répond. |
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Numbers that John likes |
2005-01-16 |
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Garrett pose la question : John likes 400 but not 300; he likes 100 but not 99; he likes 3600 but not 3700. Which does he like?
900
1000
1100
1200 Penny Nom lui répond. |
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252 x ? is a cube |
2004-12-22 |
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Andrea pose la question : What is the smallest positive interger by which 252 can be multipled so the result is a perfect cubed? Penny Nom lui répond. |
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"a" cubed minus "b" cubed |
2004-12-02 |
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Denise pose la question : "a"cubed minus "b"cubed equal (a-b) times
("a"squared plus "ab" plus "b"squared)?
I know this is a formula, but why is it true? Penny lui répond. |
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Solving quadratics |
2004-11-20 |
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Aaron pose la question : Can you solve the following equation (quote the value of x,y and t to 3 sig figs)
((i have changed figures so that i can work through my own example))
x2 + x - 6 = 0
5y2 +19y = 3
10cos2 t + 3cos t = 4 Penny Nom lui répond. |
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An ODE |
2004-11-10 |
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David pose la question : I have a question that i really cant do, it is as follows:
The ODE dy/dx + 0.5y = 0.5e^(-1.5x) ; y(5) = 2
Solve the ODE subject to the given condition using exact methods and evaluate the solution y for x = 5 x=5.2 x=5.4 x=5.6 x=5.8 x=6 Harley Weston lui répond. |
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Factoring |
2004-11-09 |
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Rise pose la question : Q1: a2 + 5a + 6
I didn't really understand the purpose of the teacher's steps, but was able to get my daughter to find factors of 6 and then add them together to find which resulted in the sum of 5.
Unfortunately, this problem-solving technique did not help us to solve for the more complex problems as follows:
Q2: 9a3 - 24a2 + 12a Penny Nom lui répond. |
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Multiplying two algebraic fractions |
2004-10-31 |
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A parent pose la question : Multiply:
x+2 x²-4
----- x -------
x-2 x²+x-2 Harley Weston lui répond. |
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GCD and LCM |
2004-10-31 |
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Cartalina pose la question : how do you calculate the "positive difference between the GCF and LCM of two numbers"? Penny Nom lui répond. |
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Crossword math puzzle |
2004-09-14 |
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Joyce and Tiffany pose la question : The puzzle name was real number vocabulary and the question is (a number that divides evenly into another what is it?). (Space in between tic-marks on a number line). Harley Weston lui répond. |
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GCD (a + b , a^2 - ab + b^2) |
2004-08-27 |
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Carol pose la question : Let a and b integer and relatively prime. Proof that:
GCD (a + b , a^2 - ab + b^2) = 1 or 3 Penny Nom lui répond. |
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The integrating factor method |
2004-08-05 |
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A student pose la question : Whilst using the integrating factor method, I am required to integrate a function multipled by another function.
say f(t) = exp(kt) and some other function g(t); where exp = exponential and k is some constant.
Integral f(t)*g(t) dt or
Integral exp(kt)*g(t) dt
What would the result of this integral be? I have never met an integral like this before. Would it simply be exp(kt)*g(t)/k?
More specifically, the problem and my attempted answer is in PDF format:
In my attempted solution, I am unsure about the last two lines I have written out, as it relates to integrating a function multipled by another function. Harley Weston lui répond. |
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an integer with three factors |
2004-08-03 |
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A student pose la question : What is the probability that a randomly chosen 3 digit number has exactly 3 factors Penny Nom lui répond. |
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sin^2x-5sinx-3=0 |
2004-08-02 |
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Kerri pose la question : hey my name is kerri i'm a college students and i was wondering if you could help in with this problems
sin^2x-5sinx-3=0 Penny Nom lui répond. |
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Factoring |
2004-07-28 |
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Nicole pose la question : Can 4x2 + 19x + 12 be factored? i have tried but i cannot figure it out. Is there a way to find out if it cannot be factored before i try to work out the problem? Penny Nom lui répond. |
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x^2 = x + 2 |
2004-07-26 |
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A parent pose la question : x2 = x+2
My daughter came home with this equation today and although I know the answer is x=2, i have no way of proving it by showing any working out. Penny Nom lui répond. |
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Factoring |
2004-07-19 |
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A student pose la question : Factor completely:
3x3 - 24y3
54x6 + 16y3
16xy - 4x - 4y - 1
0.09x2 - 0.16y2 Penny Nom lui répond. |
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Solving some quadratic equations |
2004-07-15 |
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A student pose la question : Could you please solve the following for x
x2+6=5x
x2+16=8x
2x+21=3x2 Penny Nom lui répond. |
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Factoring integers |
2004-07-02 |
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A student pose la question : After looking at all the info I could get about NFS, I still have some questions that are unsolved:
First of all: If someone found an algorithm that has a worst case running time of N*Log(N) to factor an integer n into his divisors, would it be quicker or slower then the number field sieve algorithm?
secondly, what exactly is the time complexity of the Number Field Sieve algorithm, if I would factor an integer n? Claude Tardif lui répond. |
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112! |
2004-05-28 |
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Beatriz pose la question : 1) A bus driver collects identical sets of 5 coins from each passenger. If the totoal colledted was $21.83, how many pennies did the driver get??
2) How many terminal zero in the base 10 expression of 112! (factional) N! means N(N-1)(N-2) .....(2) (1). Penny Nom lui répond. |
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Factoring |
2004-04-27 |
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Bipin pose la question : FACTORISE:
a to the power of 6 + b to the power of 6 Penny Nom lui répond. |
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Some factoring problems |
2004-04-15 |
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KJ pose la question : Factor these:
x3+125 -----> (x+5)3
8x3-27 -----> (?)
x2+36 -----> (x+6)2
x4-5x2+4 --> (?) Penny Nom lui répond. |
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n! > n^2 |
2004-03-30 |
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Jose pose la question : How can you prove by mathematical induction that:
n! > n2. Penny Nom lui répond. |
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Factoring x^2 + 5x + 4 |
2004-03-14 |
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Keenan pose la question : how do I factor x^+5X+4? Penny Nom lui répond. |
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The factor theorem |
2004-03-08 |
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LisaMarie pose la question :
Hi, I have a career link question from gr.12 advanced functions
and intro. calculus. The equations is:
R(t) = 5(t4 - 4t3 +
19/4 t2 - 3/2 t)
The question is to apply the factor theorem
and quadratic formula to determine the times it crosses the t axis. The
only method i know of for using the factor theorem is when the last number
does not have a variable beside it so i'm not sure how you would even
use the factor theorem for this? We haven't dealt with any that have 0 as
the last number with no variable so i'm a little confused! please help!
Thank you
Penny Nom lui répond. |
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Factoring expressions |
2004-01-03 |
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A student pose la question :
I'm having trouble factoring expressions that aren't monic. I can do things like
x2-9x+8, but problems like 12x2+5x-3 have me stumped.
I also have a question about factoring out common factors. In a problem like
x2-18x+81, wouldn't you divide by 9? But what happens to the x2, is it x2/9? Penny Nom lui répond. |
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Multiplier and multiplicand |
2003-12-17 |
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Karen pose la question : The K-5 curriculum states that at a grade 5 level students should "understand and use the terms multiplier, multiplicand" The curriculum defines 'multiplicand' as " a number being multiplied by another number. A factor." There is no definition given for 'multiplier'
Question: Define these words- are they just other words for 'factors'. If so, how important is it that students use these terms? It would seem like 'factors' would be the better choice of words to use. If multiplcand refers to eg. the first factor in the equation and the 'multiplier' the seond term, (if in fact it does)- is this not confusing for students when we teach them that multiplication is commutative? Penny Nom lui répond. |
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Factoring in |
2003-12-16 |
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Priscilla pose la question : How can you use solving by factoring in real life applications? Harley Weston lui répond. |
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What is a number that has exactly 13 factors? |
2003-11-09 |
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Mary pose la question : What is a number that has exactly 13 factors? Penny Nom lui répond. |
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Greatest Common Factor |
2003-11-08 |
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Beth pose la question : How do you use the Greatest Common Factor in addtion and subtraction of fraction? Penny Nom lui répond. |
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Which one has the most factors? |
2003-10-31 |
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Kristi pose la question : Of all the whole numbers less than or equal to 5000, which one has the most factors? Claude Tardif lui répond. |
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Pairs of prime numbers |
2003-10-13 |
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Nikolas pose la question : Use pairs of prime numbers to find all the numbers less than 50 that have only two prime factors. Make an organized list. Penny Nom lui répond. |
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Relatively prime |
2003-09-27 |
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James pose la question : what is the definition a relative prime numbers? Penny Nom lui répond. |
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Making a square |
2003-09-07 |
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A student pose la question : if I am given any number (say 80 for example), how may I determine the smallest whole number integer which when multipled by it will yield a square number ? In other words if I express this as: 80Ý*ÝnÝ=ÝsquareÝnumber, what is the least value of n which will yield a square. Penny Nom lui répond. |
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An array of pennies |
2003-05-23 |
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Saundra pose la question : If you have 100 pennies and you are suppose to make an array do you arrange the pennies by date? Penny Nom lui répond. |
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1575 |
2003-03-13 |
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Sharyn pose la question : find 6 integers that when multiplied with each other equal +1575 and when the same integers are added together equal zero. there are more positives than negatives and one of the numbers is a double digit between 10 and 20 Penny Nom lui répond. |
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X times Y equals ten million |
2003-02-26 |
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Baneen pose la question : Would you be able to tell me which two numbers would compute ten million without any number having zeros in it? Penny Nom lui répond. |
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Factoring |
2003-02-04 |
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Marcin pose la question : I am having a really hard time with the factor theorem. Can you please help me with the following? (a'3 means a to the exponent 3)
a)8a'3+64b'3c'6 b)8x'4-12x'3-44x'2+24x c)x'4-21x'2-100
Penny Nom lui répond. |
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Factoring a trinomial |
2003-01-26 |
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A student pose la question : how do you factor: Xsquared + 8x + 12 Penny Nom lui répond. |
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Some 5th grade problems |
2003-01-24 |
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Sabrina pose la question :
[What is the greatest common factor of 20,28, and 36?] next problem is [5k+7(k+8)= ] next problem [Curtis simplified 0.8 divided by 0.2 x 0.04 and got 10. Latoya Simplified and got 1.6. is either correct? Can you explaine how you got the answer please.] Penny Nom lui répond. |
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The least common denominator |
2003-01-21 |
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Brittan pose la question : Hi there I need help! My name is Brittany and i am in the 6th grade. I need help finding the least common denominator(LCD), and the book says Find the LCM of the denominators and i've done that and then it says write equivalent fractions,using the LCM as the least commonn denominator.The directions say Use the LCD to write each pair as like fractions. and the problem is 1/8 and 5/40. Could u explain how in the word u do this? Thanks a lot Brittany Penny Nom lui répond. |
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Factoring |
2002-12-11 |
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Larry pose la question : Question:
how do u factor trinonmials
EX: X 3 + Y 3
X 3 - 8Y 3
8X 2 - 72
64A 3 - 125B 6 Penny Nom lui répond. |
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Factoring a cubic |
2002-12-05 |
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Dorota pose la question : I got a problem with factorise the expression 2x3+11x2-5x-50. Penny Nom lui répond. |
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65,125 |
2002-12-04 |
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Brittany pose la question : I am a three-digit number.When you reverse my digits,a larger number is formed.the product of me and the new number is 65,125.What number am I. Chris Fisher and Claude Tardif lui répond. |
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Factor completely |
2002-11-21 |
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Shelley pose la question : these two questions are to be factored completely but i have no idea how to factor them - (x-4y) 2 - 3(x-4y) - 4
- x 6 + y 6
Penny Nom lui répond. |
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Composites, primes, factors and common factors |
2002-11-20 |
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Connie pose la question : My son can't remember what a composite number is, what a prime number is and the explaination of factors and common factors. Help! Penny Nom lui répond. |
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Two problems |
2002-10-14 |
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Eva pose la question :
a) How many different equivalence relations can be defined on the set X={a,b,c,d}? b)Show that 6 divides the product of any 3 consecutive integers. I know it is true that 6 divides the product of any 3 consecutive integers. However, i have problem showing the proof. Leeanne Boehm and Penny Nom lui répond. |
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Three algebra problems |
2002-10-13 |
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Veronica pose la question : Solve the following inequality: 5(xsqured-4)/(xto the 5th(2x-5)to the 3rd) < or equal 0 Solve the following equations for all roots square root of x+2=-1+square root of 2x+3 what's ZERO FACTOR PROPERTY??? The hypotenuse of an isosceles right triangle is 7cm. long. Determine the lenghts of the other sides. Leeanne Boehm lui répond. |
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The factor theorem |
2002-09-10 |
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Yael pose la question : Prove (x - a - b) is a factor of x3 - a3 - b3 - 3ab (a + b) Penny Nom lui répond. |
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A limit |
2002-09-03 |
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Circe pose la question :
Lim 3x 3+ax+a+3 /(x 2+x-2), X->-2 Penny Nom lui répond. |
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When is 1! + 2! + 3! + ... + x! a square? |
2002-08-19 |
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Sarathy pose la question : Solve : 1! + 2! + 3! + ... + x! = y 2 How do i find the solutions ? Claude tardif lui répond. |
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Factor 12x^2 - 20x - 8 |
2002-04-30 |
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Crystal pose la question : Factor Completely: 12x2 - 20x - 8 Penny Nom lui répond. |
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A polynomial |
2002-04-14 |
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A student pose la question : A polynomial function is described by the following conditions: f(x) has two real zeros at x= -2 and x= 1, each of multiplicity 2 f(x) has two complex zeros as x goes to -infinity, f(x) goes to +infinity as x goes to +infinity, f(x) goes to +infinity f(x) has a y-intercept at (0,2) Sketch a polynomial function that satisfies the above conditions. Write an equation for function f(x) Write another function g(x) that also satisfies the above parameters. Penny Nom lui répond. |
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24x^4 + 3x |
2002-03-18 |
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gary pose la question : 24x 4 + 3x Penny Nom lui répond. |
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Factor completely |
2002-03-07 |
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Taylor pose la question : I'm supposed to completely factor this but I don't know what to do with all the variables. a3b5 - a2b5 - 12ab5. Does it have anything to do with b5 being a common factor or am I completely off? Penny Nom lui répond. |
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A degree 5 polynomial |
2002-02-17 |
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Carla pose la question : Write an equation for a polynomial of degree 5 given the following zeros: -7+3i, -2+sqrt(13), 6 Penny Nom lui répond. |
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Reduce 79,537/3,623,420 |
2001-12-13 |
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Eliana pose la question : How do you reduce 79,537/3,623,420. Claude Tardif lui répond. |
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A cubic |
2001-11-10 |
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Louise pose la question : x3 + 9x2 - 7x - 63 Penny Nom lui répond. |
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GCD and LCM |
2001-09-24 |
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David pose la question : Find the GCD adn LCM of the following numbers. Assume p 2 to the power p, 3 to power q, 5 to power r and 2 to power q, 3 to power r, 7 to power p Penny Nom lui répond. |
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4x(2x-1)+(2x-1)2 |
2001-09-17 |
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Nick pose la question : how do u solve 4x(2x-1)+(2x-1)2 Penny Nom lui répond. |
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A factoring problem |
2001-06-14 |
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A student pose la question : What is the factoring of x squared -7+6 equal Penny Nom lui répond. |
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Primes and square roots |
2001-06-14 |
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Paul pose la question : I have a bit of a math problem. It has to do with determining if a very large number is a prime. One method entails dividing the number by every smaller prime number. If any divide into it, it's not a prime. This would be a big job if the number was something like 400 digits long. Another way I read about was to take the square root of the number and test all the primes less than its square root. The explanation went like this: "When a number is divided by another number that is greater than its square root, the result is a number smaller than the square root. For example, the square root of 36 is 6. Dividing 36 by 2, a smaller number than 6, gives 18, a number that is larger than the square root. To prove that 37 is prime it is only necessary to divide it by primes less than 6, since if it had a prime factor greater than 6, it would have to have one less than 6 as well." I understand the explanation, up to the last sentence. I fail to see the underlying logic. Why if a prime factor exists below the square does one have to exist above the square too? The number 40 can be divided by the prime 2, a number below its square root, but no other primes can do this above its square root. Have I missed something? What's the logic here? Claude Tardif and Penny Nom lui répond. |
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25 y^2 + 20 y z - 4 z^2 |
2001-05-15 |
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Kimmy pose la question : i don't know how to factor the trinomial 25y2 + 20yz - 4z2. I can get it, but i get messed up on getting the minus 4 at the end. all i get is a plus 4. Can it even be factored. Penny Nom lui répond. |
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Greatest Common Factor |
2001-05-09 |
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Nicole pose la question : What is the Greatest Common Facter for:
126,261 1008,1080 546,1995 128,256 and 255,256 Penny Nom lui répond. |
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Factoring |
2001-03-22 |
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Kaleena pose la question : Factor this equation: 5x7-10x5+4x3-8x Harley Weston lui répond. |
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Difference of squares |
2001-02-20 |
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Janna pose la question : Hi! I was just wondering how you would factor x2 - 9y2. Harley Weston lui répond. |
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Why is 0! = 1? |
2001-01-30 |
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Diane pose la question : Every math book always claims that 1!=1 and 0!=1 are givens, and that we should just memorize it. i understand the 1! part, but where is the basis for claiming that 0!=1???? Walter Whiteley lui répond. |
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Factoring |
2001-01-24 |
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Danielle pose la question : 4(x+1)2+y(x+1) Penny Nom lui répond. |
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Factoring a trinomial |
2001-01-24 |
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Kyle pose la question : I am an eighth grade student.I can not figure out the following problem. 4x2 + 2x - 20 Leeanne Boehm lui répond. |
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What number from 1 to 25 has the most factors? |
2001-01-23 |
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John pose la question : What number from 1 to 25 has the most factors? Penny Nom lui répond. |
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Greatest common factor |
2001-01-17 |
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A teacher pose la question : I'm a teacher at a local Middle School and I would like the answers for the following questions. What is the greatest common factor for.. 546 and 780 156 and 732 . . . Leeanne Boehm and Penny Nom lui répond. |
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Compression by a factor of ? |
2001-01-12 |
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Wayne pose la question : Given an equation like y = (1/2) (x-3)2 + 6, when describing the distortion from the base curve y = x2 is it correct to say there is a vertical compression by a factor of 2, or by a factor of 1/2 ? Which is more correct? I have seen both versions in different high school texts, and I am now unsure which is more correct. Harley Weston lui répond. |
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Four crayons |
2001-01-10 |
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Neyra Espinoza pose la question : You have four crayons (red, blue, yellow, green). If you line them up, how many different combinations can you get? Patrick Maidorn lui répond. |
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A pair of numbers whose GCF is 28 |
2000-12-27 |
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John pose la question : Name 2 different pairs of numbers whose GCF is 28. Penny Nom lui répond. |
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Factoring (u-v)3+v-u |
2000-12-15 |
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A parent pose la question : I am a middle school teacher and a parent. I am snowed in and trying to help my 9th grader get ready for 9 weeks exams. I have tried to factor this problem to no avail. (u-v)^3+v-u. I have the answer but I need to know how it is done. Penny Nom lui répond. |
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Prime factorization |
2000-12-13 |
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A student pose la question : What is the prime factorization for 250 1296 and 2400 Penny Nom lui répond. |
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Factoring a cubic |
2000-10-31 |
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A student pose la question : Factor Completely 18p3 - 51p2 - 135p Paul Betts and Penny Nom lui répond. |
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A zip code problem |
2000-10-26 |
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Rob Mathis pose la question : Find the zip code of a place in a county so that the product of it and the zip code of another place in another county of the same name, but in a different state, is an exact multiple of the number 123456789 Claude Tardif lui répond. |
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1234567890 |
2000-09-14 |
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Bradley Kloetzly pose la question : Can you find two whole numbers, with the smallest possible difference between them, which when multipled together equal: 1234567890? Harley Weston lui répond. |
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Factoring |
2000-09-12 |
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Melissa pose la question : I would like you to help me factor (x 6-y 6) & (a+b)2+3(a+b)-4 Penny Nom lui répond. |
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Roots of x^2 + 22 x + 112 |
2000-09-07 |
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Brian R. pose la question : I need to find the root of the quadratic equation of a square. The problem is x2 + 22x + 112 = 0. Penny Nom lui répond. |
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n! = 42(n-2)! |
2000-07-21 |
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Damon Bailey pose la question : Solve n! = 42(n-2)! Paul Betts lui répond. |
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10,000! |
2000-07-21 |
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Lauren pose la question : Hi I was just wondering if you could tell me how many zeros are in 100,000! (factorial.) Denis Hanson lui répond. |
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Factoring trinomials that are squared |
2000-04-17 |
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A student pose la question : I have a question that I really need an answer to. I need help with factoring trinomials that are squared. Penny Nom lui répond. |
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How many zeros? |
2000-04-09 |
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Greg Potts pose la question : The natural numbers 1 to 25 are multiplied together (1 x 2 x 3x..24 x 25). How many zeros are there in the product of this multiplication? a)6 b)7 c)5 d)10 or e)4? Harley Weston lui répond. |
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Six digit numbers using 1,2,5,6,7, and 9 |
2000-03-20 |
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Rachel pose la question : How many different six-digit numbers can you make using the digits 1,2,5,6,7, and 9? How many of these six digit numbers are divisible by six? Claude Tardif and Denis Hanson lui répond. |
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Division |
2000-03-16 |
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Charday pose la question : What is the easiest way to calculate the least number that can be divided evenly by all the numbers from 1 to 10. Penny Nom lui répond. |
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10 000 000 = a x b |
2000-03-06 |
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Spencer Jaffe pose la question : What two numbers that don't end in zero, multiplied equal 10,000,000. Claude tardif lui répond. |
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Factoring, primes, GCF and LCM |
2000-02-27 |
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Ruth Kroek pose la question : My son is in grade seven, he has to do a Factoring Booklet the areas covered are: - Prime #'s
- Composite #'s
- Rainbow Factoring
- Finding Multiples (consecutive multiples)
- Finding GCF of 2-3 numbers uning Rainbow factoring
- Finding LCM of 2 numbers using consecutive multiples
- prime factor trees
- prime factor ladders
- finding GCF of 2 numbers using Prime number Method
Although his text 'Math Power' gives some information, we are at a loss .. Penny Nom lui répond. |
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Three factors |
2000-02-21 |
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A parent pose la question : Question from a parent helping a child, grade 4, with homework. Can a number have three factors? Name three numbers that have three factors. Penny Nom lui répond. |
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Factors |
2000-02-15 |
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Guy Rayfield pose la question : Please can you tell me the factors of 6 I think the answer is 2 and 3 - am I right? Penny Nom lui répond. |
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Factors |
2000-01-27 |
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Pam pose la question : My son [age 9, 4th grade] has a math problem with factors. I need to know how to do the problem that involves the factor 24. I'm not even sure where to start. Harley Weston lui répond. |
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Factoring by graphing |
2000-01-11 |
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Dylan Kirkwood pose la question : How can you factor a quadratic equation by graphing it? Penny Nom lui répond. |
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Factoring ^6 |
2000-01-03 |
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Athena pose la question :
my name is Athena and I have a question on factoring: how would you figure this out: (x6-y6) and (x6+y6) Penny Nom lui répond. |
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Solving a cubic equation |
1999-12-30 |
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Natalia pose la question : How can I solve: 2 x3 - x2 + x - 2 = 0 ??? Penny Nom lui répond. |
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Two algebra problems |
1999-12-17 |
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Michael Standfest pose la question : If x+4 is a factor of 2x4+kx3-3kx2+6x-40, find k and Prove that n2-n is even for all n, using the proof of contradiction Penny Nom lui répond. |
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order 4+ determinants |
1999-12-06 |
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Joe Kron pose la question : Why is it never shown how to calculate the value of 4x4 (or larger size) deteminants by the diagonal multiply methods that are generally shown for 2x2 and 3x3 determinants? The method I'm talking about is called Cramer's Rule??? Is this method not extensible to order 4+ and if not why not? Anyway the method always shown for order 4+ is called "reduction by minors" which is not the answer to this question. Walter Whiteley lui répond. |
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An odd number of factors |
1999-10-22 |
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Melissa pose la question : What is the common name used for numbers that have an odd number of factors? What is the least positive integer that has exactly 13 factors? Penny Nom lui répond. |
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0! + 1! + 2! + 3! + ... + 2000! |
1999-10-21 |
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Melissa pose la question : My name is melissa. I am a 9th grade student I am having trouble finding out how to do this: What is the tens digit of 0! + 1! + 2! + 3! + ... + 2000! I know how to find these, but my calculator cant go any higher than 69! Is there any way i can do this problem? Penny Nom lui répond. |
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Common factors |
1999-10-06 |
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Tommygirl98 pose la question : Ok I have a question about common factoring I'm not to sure if you could help me but it's worth a try here it goes. Ok I have a test on Friday and i'm having trouble understanding how to do it here's an example, Factor, -10 + 2b how do you do it and what do they mean by factor? Penny Nom lui répond. |
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Using Factoring in Problem Solving |
1999-09-09 |
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Lori pose la question : I have a problem with a problem. The Problem is....The sum of the squares of two consecutive positive even integers is 340. Find the integers. Penny Nom lui répond. |
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A difference of squares problem. |
1999-07-24 |
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Michael and Stephanie Bixler pose la question : If you have the equation x= n2 - m2 (ie 40= 72-32= 49-9) x must = a positive number 1) which squared numbers work as n and m 2) how does it work 3) if my teacher gave me the number for x; how could I figure out this problem Harley Weston lui répond. |
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Factoring |
1999-03-30 |
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Maggie Stephens pose la question : I don't know anything about factoring would you plese help me. 3x4 - 48 54x6 + 16y3 125-8x3 12x2 - 36x + 27 9 - 81x2 a3 + b3c3 I would greatly appreciate any help you can give me thanks. Jack LeSage lui répond. |
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Factoring polynomials |
1999-03-29 |
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Karen pose la question : I have been unable to factorise a polynomial equation and was wondering if you could please help. It is level (10-12) maths. The polynomial is x3 + x2 - 24x + 36 I have tried a few factorisation methods such as foctorisation by grouping but it won't work this polynomial. Please help. Jeff Walters and Jack LeSage lui répond. |
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Factoring |
1999-03-08 |
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L. Sivad pose la question : Question: m2+6m+9-n2 Penny Nom lui répond. |
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Composite Numbers |
1998-10-07 |
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Greg Murphy pose la question : What type of composite number has an odd number of factors? Harley Weston lui répond. |
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Students and Lockers |
1998-10-02 |
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Mike pose la question : There is a row of 1000 lockers. There is a line of 1000 students. Student number 1 starts at the first locker and opens all 1000. Student number 2 starts at the second locker and closes every other one. Student number 3 starts at the third locker and goes to every third one, closing the open ones and opening the closed ones. Student number 4 does the same with every fourth locker and so on down the line... After all 1000 students have gone how many lockers are open and which ones are they? Please help! There is proboly a simple solution but we couldnt figure it out for the life of us. Please let us know how you solve it. Patrick Maidorn and Penny Nom lui répond. |
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Five Factors |
1998-09-19 |
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Derek Yau pose la question : To whom it may concern, I have difficulty in getting the solution to the following question: Find 5 numbers that have exactly 5 factors. I got 16, 81 but couldn't find the rest. I believe that in order to have 5 factors, it has to be a square number. Isn't it true? I guess there may be a pattern to this. Thanks for your help. Derek Yau. Penny Nom lui répond. |
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3 to the power of 1994 |
1998-09-05 |
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Kim Tangney pose la question : What are the last two digits of: - 3 to the power of 1994
- 7 to the power of 1994
- 3 to the power of 1994 + 7 to the power of 1994
- 7 to the power of 1994 - 3 to the power of 1994
Penny Nom lui répond. |
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Solving Quadratics |
1998-07-16 |
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Fred Goodrich pose la question : I need a step by step lesson on solving quadratic equations. Thank you, Penny Nom lui répond. |
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Difference of squares |
1998-06-23 |
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Kristen Smelsky pose la question : Solve the following using a difference of squares: 4x(squared) minus 4xy plus y(squared) minus m(squared) plus 2m minus 1 Penny Nom lui répond. |
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The Largest Factor |
1998-03-15 |
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Senthuran Nadarajah pose la question : When each expression is evaluated for different values of n, the answers will differ. For each expression, find largest natural number that will divide the result for all natural number values of n. n^5 - 5n^3 + 4n Harley Weston lui répond. |
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Divisors of 6n |
1998-01-26 |
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James pose la question : If n is a positive integer such that 2n has 28 positive divisors and 3n has 30 positive divisors, then how many positive divisors does 6n have? (a) 32 (b) 34 (c) 35 (d) 36 (e) 38 Penny Nom and Haragauri Gupta lui répond. |
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The Factor Theorem |
1998-01-18 |
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Dhruv Bansal pose la question : Hi, I'm a ninth grade student doing a math project for school. I'm trying to learn about various ways of solving 3rd and 4th degree polynomial equations using the remainder theorem, the factor theorem, and synthetic division. The books I have all mention x - r, which I know nothing about, not even how to get it. I would really appreciate any information on this. Thanks. Dhruv Bansal Penny Nom lui répond. |
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Greatest Common Factor. |
1998-01-09 |
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Percy Stribling pose la question : how do you figure out what the greater common factor is? Penny Nom lui répond. |
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0! |
1997-03-02 |
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Donna D. Hall pose la question : I am looking for a quick and easy explanation as to why 0! is 1. Walter Whiteley and Denis Hanson lui répond. |
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Divisibility of 2n choose n. |
1996-09-24 |
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Kathy Doan pose la question : Can you prove that "2n choose n" is not divisible by 3, 5, and 7 for infinitely many n? Penny Nom lui répond. |
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Term definitions |
1996-09-18 |
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M. Seltzer pose la question : A 7th grade algebra student would like the definition of the terms proper factor and perfect number. The Centralizer lui répond. |
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Number of factors |
1996-01-30 |
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Chrissy pose la question : What number has exactly 13 positive factors? Penny Nom lui répond. |
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