58 articles trouvés pour ce sujet.
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une écriture plus simple des expressions |
2011-01-13 |
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jessie pose la question :
trouver une écriture plus simple des expressions suivantes sachant que : x + y = 3 et x - y =-2
A=x-1+y+2 B=x-1+y-2
C=x+1+y+2 C=x+1+y-2
Claude Tardif lui répond. |
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400 in 7.5 billion |
2019-08-28 |
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Emma pose la question :
What is a better way to express 400 in 7.5 billion?
My daughter has a rare condition, I want to know the answer to say “she is 1 in a ...”
Penny Nom lui répond. |
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The sum of three consecutive even integers |
2019-01-27 |
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Pauleen pose la question :
Translate this into algebraic expression
The sum of three consecutive even integers, if x is the first even integer
Penny Nom lui répond. |
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Solve for x in Y=1.5x + log (1+x) |
2018-12-23 |
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Asadollah pose la question :
Please restate below expression in terms of y
Y=1.5x + log (1+x)
Thanks
Penny Nom lui répond. |
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Two expressions for the perimeter of a a rectangle |
2018-05-13 |
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Slayde pose la question :
A rectangular house has one side 4 metres longer than the other. Create two different expressions for its perimeter. The expressions should be given in factorised and expanded form.
Penny Nom lui répond. |
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Simplify 1/2^i |
2018-01-28 |
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Deepak pose la question :
How do I simplify this complex equation:
z=1/(2^i)
Penny Nom lui répond. |
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y as an expression in terms of x |
2018-01-20 |
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Mark pose la question :
What is y as an expression in terms of x ?
pennt lui répond. |
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A mixed number as a percent |
2016-10-18 |
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Jayda pose la question :
how go you change a mixed number into a percent
Ex. 3 3/4
Penny Nom lui répond. |
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1 + 1 + 1 + 1 + 1 + 1 + 1 + 1 + 1 + 1 + 1 + 1 x 0 + 1 = ? |
2015-06-18 |
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Sharon pose la question :
1 + 1 + 1 + 1 + 1 + 1 + 1 + 1 + 1 + 1 + 1 + 1 x 0 + 1 = ?
I got 1 as my answer despite BODMAS making it 12 because logic tells
me I ought to place brackets around the first set of repeated addition. Could you
please clarify this for me? Thank you 😊
Harley Weston lui répond. |
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3 over "x" plus 5 |
2015-02-23 |
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Kenny pose la question :
3 over "x" plus 5. I don't know this is either a polynomial and if so how would you define it.
Harley Weston lui répond. |
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An algebraic exercise |
2013-03-18 |
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autumn pose la question :
given: f(x)=x/(x^2+2) determine: [f(x-h)-f(x)]/h
Penny Nom lui répond. |
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A messy arithmetic expression |
2013-02-24 |
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niiaryee pose la question :
(((((5^2*4^3)1/5+9^3/3)+(25+(4*5)/15)^2-10)/10/2)3)))))
Penny Nom lui répond. |
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A mathematical expression with the answer 7 |
2012-11-10 |
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emily pose la question :
hey um i need to find and problem that fallows bedmas that has one division one multiplication and one sub and one add and one brackets and one exponents that has the answer of number 7
Penny Nom lui répond. |
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Forming an algebraic expression |
2012-10-27 |
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ashley pose la question :
A sidewalk has a constant width W and comprises several short sections having lengths
12, 14,and 10 feet. How do I find the simplified expression that gives the number of square feet of sidewalk?
Penny Nom lui répond. |
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Find an algebraic expression |
2012-10-03 |
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Karen pose la question :
Question from Karen, a parent:
Find an algebraic expression relating the input and output.
| input |
output |
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| 3 |
1 |
| 9 |
3 |
| 15 |
5 |
| 21 |
7 |
| 27 |
9 |
Penny Nom lui répond. |
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An arithmetic expression |
2011-11-28 |
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Muhmmad pose la question :
2/5*-3/7-1/6*3/2+1/14*2/5
Penny Nom lui répond. |
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Four less than three times a number is 14 |
2010-04-16 |
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David pose la question :
My daughter has two questions that we could use some help with.
First ?
Four less than three times a number is 14
Secound?
The quotient of -15 and w
Penny Nom lui répond. |
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x^3+1/x^3=18*sqrt(3) |
2009-07-08 |
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Nazrul pose la question :
If x^3+1/x^3=18*sqrt(3) then how can I evaluate the value of x+1/x?
Thank you for your help.
Robert Dawson lui répond. |
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The whole number that precedes a number w+3 |
2009-01-17 |
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Morgan pose la question :
write a variable expression for
"The whole number that precedes a number w+3"
Penny Nom lui répond. |
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An expression for q quarters and n nickles |
2009-01-16 |
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Morgan pose la question :
a variable expression for:
"The value in cents of q quarters and n nickels"
Penny Nom lui répond. |
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Algebraic fractions |
2008-10-06 |
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Kayla pose la question :
(x^2-9)/x times (x^3-4x)/(x^2+5x+6)
Harley Weston lui répond. |
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An algebraic expression |
2008-08-29 |
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Antonio pose la question :
write a variable expression for 9 less than k
Penny Nom lui répond. |
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The square root of a fraction |
2008-08-24 |
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Lauren pose la question :
How do you solve square roots of fractions? Does the format change if it is either a proper or an improper fraction?
Ex. the square root of 1/4 or the square roots of 80/25
Penny Nom lui répond. |
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Express as a function of x |
2008-07-14 |
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Rita pose la question :
Express the area A of an isosceles right triangle as a function of x of one of the two equal sides.
NOTE: I always see the phrase "Express as a function of x" in math textbooks.
What exactly does that phrase mean?
I also have seen it written as "Express in terms of x."
Penny Nom lui répond. |
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1/3-5/6=1/x, solve for x |
2008-05-01 |
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Lavada pose la question :
1/3-5/6=1/x How do I solve this problem.
Penny Nom lui répond. |
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Simplify 5x^5/8 / 15x^2/12 |
2008-04-18 |
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Kyler pose la question :
5x^5/8 / 15x^2/12 Divide the rational expressions. Simplify the results.
Penny Nom 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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Simplifying square roots |
2007-12-19 |
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Ciara pose la question :
How would you calculate 2 to the square root of 8 plus 4 to the square root of 2 minus 5 to the square root of 2?
Stephen La Rocque lui répond. |
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Subtracting rational expressions |
2007-10-09 |
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Pamela pose la question :
Subtract:
6p – w __ 4c + p
w – 4 w – 4
Stephen La Rocque lui répond. |
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Variable expressions - part 2 |
2007-09-04 |
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lisa pose la question :
how do I write a variable expression for word phrase example x less than =
2 or 2 less than p
4 fewer than job please help
Penny Nom lui répond. |
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Variable expressions |
2007-09-04 |
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Eric pose la question :
how so i write a numerical or variable expression for each quantity.
example two dozen eggs or d dozen eggs
number of quarts ub a 3 gallons
Penny Nom lui répond. |
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The quotient of thirty and ten times a number. |
2007-09-02 |
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Jenna pose la question :
I need help on How to translate a phrase into an algebraic expression:
The quotient of thirty and ten times a number.
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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Express a certain variable as a function of another variable |
2007-06-12 |
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Gilligan pose la question :
The volume V of a right circular cone is V = (1/3)pi(r^2)(h). If the height is TWICE the radius, express the volume V as a function of r.
I see the phrase "express a certain variable as a function of another variable" a lot in math books.
What exactly does that mean?
Is there another way to say the same thing?
Stephen La Rocque lui répond. |
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Rational polynomial expressions |
2007-06-09 |
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a student pose la question :
I have a question that continues to lead me to the answer x/(x - 1) but according to my math book, the answer should be 1/(x - 1).
Who is right? Who is wrong?
Here is the question:
(x^2 - 6x - 27)/(x^2 - 11x + 18) DIVIDED by (x^3 + 2x^2 - 3x)/(x^2 - 2x)
Stephen La Rocque lui répond. |
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Simplifying a rational expression |
2007-04-29 |
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Tamika pose la question :
X^2 + 10X + 24
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X + 6
SIMPLIFY EACH RATIONAL EXPRESSION (IF YOU CAN'T SIMPLIFY IT, WRITE ALREADY SIMPLIFIED)
Stephen La Rocque lui répond. |
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Adding and Subtracting Rational Expressions |
2007-03-21 |
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Pricilla pose la question :
Pricilla
I do not know how to do this problem. Don't know where to start.
[(5)/(2x-8)]+[(3x^2+15)/(x^3-4x^2+5x-20)]
Stephen La Rocque lui répond. |
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Simplifying exprressions |
2006-11-06 |
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Jessica pose la question :
-21(a+2b)+14a-9b
Stephen La Rocque lui répond. |
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How do you write a variable expression |
2006-10-11 |
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Josh pose la question :
How do you write a variable expression for the following:
The amount of money Waldo has if he has $10 more than Joe and
How much weight Kirk can lift if he lifts 30 lbs more than his brother.
Stephen La Rocque lui répond. |
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Simplify the variable expression: 3g^2h over 12gh |
2006-02-09 |
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Andrew pose la question :
okay the question says simplify the variable expression: 3g2h over 12gh
how would u do this?
Penny Nom lui répond. |
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Rational expressions |
2005-11-15 |
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Zach pose la question :
I can solve easy problems such as (x/2)+3=2+(3x/4). That is easy because the Lowest Common Denominator is 4. But what really gets me stuck is a problem like this one.
(6/x-2) = ( 21/(x-2)(x+2) )+ 1.
Penny Nom lui répond. |
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Coefficients, constants and like terms |
2005-10-05 |
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Elizabeth pose la question :
In the equation -8y+6ab+7-3ab what are the coefficients; the like terms and constants?
Penny lui répond. |
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2x/x^2-9 - 6/x^2+x-12 |
2005-09-27 |
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Emily Ann pose la question :
2x/x2-9 - 6/x2+x-12
Penny Nom lui répond. |
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A rational arithmetic expression |
2005-09-14 |
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Vijay pose la question :
How to simplify following Grade 9 math problem:
(4/-9) X (-21/-32) X (-3/14)
Penny Nom lui répond. |
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Rational expressions |
2004-09-24 |
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A student pose la question :
In general, I understand rational expressions except when it comes to solving problems such as:
x+y/2x-y - 2x/y-2x or m-4/3m-4 + 3m+2/4-3m
I am confounded by the issue of having to find a common denominator. For example, if I tried to solve these problems by multiplying both denominators they would still be uncommon.
Claude Tardif lui répond. |
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An equation with rational terms |
2004-06-17 |
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Louise pose la question :
simplify the expression
(a2+n2)/2n = a2 + (a2-n2)/2n
Penny Nom lui répond. |
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Rational expressions |
2004-04-06 |
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Shivani pose la question :
I am in 11th grade Honors Algebra II. We are currently learning about adding and subtracting rational expressions. I looked at the other questions that were similar to that of mine, but they weren't quite answering my question. I have been working on many problems to practice and see if I can come up with the correct answer, but I can't, I got like 2 out of every 7 right on my school homework. I get the easy ones, where when you have to find the LCD, it's just the other denominator. But, on others you have to really think about it. Those are hard. Here are some of the problems that I cannot get at all: (x2 - 3x + 1)/(x2 - 4) - (x2 + 2x +4)/(2 - x) - (x - 4) /(x - 2)
The correct answer is:
(x3 + 4x2 + 7x + 17)/(x2 - 4)
Penny Nom lui répond. |
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Rearranging an expression |
2004-02-24 |
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Corey pose la question :
use the following formula to answer the question
F=9c divided by 5 plus 32
rearange the formula to solve for c
how many degrees fahrenheit would it be it it was:
0 degrees celcius
-10 degrees celcius
-46 degrees celcius
Penny Nom lui répond. |
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Subtracting rational expressions |
2003-05-10 |
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Simone pose la question :
hi, i'm totally lost. i understand that you need to find a lowest common denominator to subtract two fractions (rational expressions) with different denominators. but what if the denominators are "x-1" and "x". is x the common denominator? if so what happens to the "-1"? do you know of any live online help i can get with the following: 3/(x-1) - (1-2x)/x i've looked through my notes and have no examples that quite match that i can follow to get through it. please help!
Penny Nom lui répond. |
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Excluded values |
2003-02-22 |
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Josh pose la question :
Why do you think it is necessary to include the "excluded values" when you write your answers to rational expressions?
Penny Nom lui répond. |
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Rational expressions |
2003-01-22 |
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A student pose la question :
// = the main fraction line 1.) a+1/a-1 + a-1/a+1 // a+1/a-1 - a-1/a+1 2.) 2/a(squared)-3a+2 + 2/a(squared)-a-2 // 2/a(squared)-1 + 2/ a(squared)+4a+3
Penny Nom lui répond. |
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Simplifying Variable Expressions |
2002-10-28 |
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Erika pose la question :
i would like to ask you a mathematical question on Simplifying Variable Expressions. The question is 2(n-4)+3.
Penny Nom lui répond. |
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Rational expressions |
2002-10-03 |
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Ashley pose la question :
1/x(squared) + 5/xy
Penny Nom lui répond. |
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Variable expressions |
2002-08-15 |
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Brittany pose la question :
I am just learning variable expressions. My homework is to write a variable expression for each word phrase;
example :
the number of minutes in s seconds
the cost of x cartons of juice at $.75 each
And etc.
I don't understand it
Penny Nom lui répond. |
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Simplify this expression |
2002-02-26 |
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Francine pose la question :
2X power 5 Y power 3 times 18 X power -5 Y power -3 divided by X power 1/3 Y power 1/4.
I came up with 36 ---------- X 1/3 Y 1/4 The book says 36 x1/3 y1/4.
I don't get it.
Penny Nom lui répond. |
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Simplifying algebraic expressions |
2001-05-12 |
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A student pose la question :
How do you simplify algebra expressions?
Penny Nom lui répond. |
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Adding and subtracting rational expressions |
2001-05-03 |
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Donna pose la question :
Adding and subtracting Rational expressions. I am in grade 10 and I am a student here is an example of the questions: 1/(x+1) - 1/(x-1) = ?
Penny Nom lui répond. |
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Equivalent Expressions |
1997-02-26 |
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Karyn Jones pose la question :
Josie says that s=n/(n+1) and s/(1-s)=n are two ways to write the same formula. Describe whether or not you agree with Joise. Explain how you made your decision.
Walter Whiteley and Penny Nom lui répond. |
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