51 articles trouvés pour ce sujet.
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Quel serait le cout total de production de 500 entrees |
2006-06-10 |
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Suzanne pose la question :
Chaque operateur traite des donnees pendant 7 heures 1/2 par jour, et peut s'acquitter d'une demande en 3 heures et 3/4. Combien d'operateurs faudra-t-il pour traiter 50 demandes en 1 jour.
Vous etes surveillant a l'entree des donnees. Pour atteindre vos objectifs vous engagez temporairement 2 commis a un salaire de 10$ et a raison de 8 heures par jour. Si chaque personne peut produire 50 entrees par jour, quel serait le cout total de production de 500 entrees.
Claude Tardif 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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Two power generators |
2019-06-07 |
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A student pose la question :
At 100% efficiency two generators would produce 750 MW of power. At efficiencies of 65% and 75%, they produce 530 MW. At 100% efficiency, what power would each produce?
Harley Weston lui répond. |
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Four consecutive positive integers |
2019-03-12 |
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Nabila pose la question :
The product of four consecutive positive integers in 24024
What is their sum?
Penny Nom lui répond. |
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A quadratic equation problem |
2019-02-26 |
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Em pose la question :
One root of the equation
2x^2 + bx - 24 = 0 is -8. What
are the possible values of b and
the other root?
Penny Nom lui répond. |
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The product of two numbers |
2018-06-19 |
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amie pose la question :
the product of two numbers is 108.when the larger number is divided by the smaller number the quotient is 3. What are the number.tnx
Penny Nom lui répond. |
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Percentage change in productivity |
2017-03-15 |
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Sunni pose la question :
I'm working on a graph and I need to find the percentage of increase from one figure to another. How do I do that? For instance our department started with a workload of 1773 in Jan and ended with 341 in Dec. In addition to that we received 2088 new items from Jan - Dec with an average of 5 workers. How do I find the percentage of increased productivity if any?
Penny Nom lui répond. |
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A triple product |
2016-10-03 |
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sam pose la question :
Let a and b are vectors such that
Vector a = (1,1,2)
Vector b = (2,-1,1)
And let vector c be a unit vector such that triple product of a,b,c is
minimum . We have to find the value of c.
[Thoughts]
I thought triple product of a b, c means the volume occupied by
parallelepiped. And we have to do volume minimum
Penny Nom lui répond. |
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Two quadratic polynomials |
2014-10-28 |
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khushboo pose la question :
The zeroes of a quadratic polynomial x^2+ax+b are 'c' and 'd'
and the zeroes of a quadratic polynomial x^2+cx+d=0 are 'a' and 'b'.
find the numerical value of a+b+c+d where a, b, c and d are non zero integers.
Penny Nom lui répond. |
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Expand and simplify [x-3][x+3] |
2014-07-16 |
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symion pose la question :
Expand and simplify [x-3][x+3]
Penny Nom lui répond. |
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Dt[sin t tan (t^2+1)] |
2012-02-21 |
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Ayu pose la question :
Ayu
Dt[sin t tan (t^2+1)]
derivatives
Harley Weston lui répond. |
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A product of 1 000 000 |
2010-11-19 |
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Sharron pose la question :
There are many pairs of numbers that when multiplied together give a product of 1 000 000. However, there is one pair, and only one pair, of whole numbers that contain no zero digits and has a product of 1 000 000. What are these two numbers?
Stephen La Rocque lui répond. |
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Arrays |
2010-09-09 |
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Susan pose la question :
I'm a lawyer but evidently incredibly stupid at 4th grade math. . . .Question: cover a tabletop with 9 rows of square tiles with 9 squares in each row. How many tiles cover the tabletop? Then, the paper shows a 9x9 array and asks how it is used to solve the problem. My daughter wrote 9x9=81. The next question is "what are the products of the two smaller arrays?" ???? There are no other arrays - are we to make smaller arrays from the 9x9? how?
Robert Dawson 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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The product of two integers their LCM and their HCF |
2009-02-15 |
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Anonymous pose la question :
Two numbers have LCM = 60. If their product is 180, what is their HCF?
Harley Weston lui répond. |
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(a x b) intersect (b x a) |
2009-01-08 |
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sean pose la question :
is it possible to have two sets such that
n((a X b) intersect (b X a) =3
Harley Weston lui répond. |
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The product of two numbers is 2400 |
2008-10-16 |
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belinda pose la question :
The product of two numbers is 2400, one number is 20 more than the other number. what are the two numbers?
Penny Nom lui répond. |
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A product of positive and negative numbers |
2008-10-03 |
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kaylou pose la question :
Suppose you were given 13 numbers and asked to find their product.
Seven of the numbers were positive, and the rest were negative.
Would your product be positive or negative? Why?
Penny Nom 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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Sum and product of the roots of a quadratic |
2008-07-03 |
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Gautam pose la question :
If a and b are the roots of x^2+px+1=0 and c and d are the roots of
x^2+qx+1=0
prove that
(a-c)(b-c)(a+d)(b+d)=q^2-p^2
Regards
Gautam
Harley Weston lui répond. |
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Product of Two Integers |
2008-06-25 |
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devin pose la question :
two consecutive integer have a product of 240. what are they
Penny Nom lui répond. |
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The product of the roots |
2008-03-19 |
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Rebecca pose la question :
Determine the product of the roots of the equation
(x-1)(x-2) + (x-2)(x-5)=0
Penny Nom lui répond. |
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The sum and product of the roots of a quadratic |
2008-03-16 |
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Katelyn pose la question :
Write the quadratic equation....
Sum of the roots = 16
Product of the roots = -80
Penny Nom lui répond. |
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The product of two numbers is 1,000,000,000 |
2008-03-14 |
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Henry pose la question :
What two numbers that don't in zero when multiplied equals 1,000,000,000 and same with 1,000,000,000,000,000,000.
Penny Nom lui répond. |
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Percentage change |
2007-08-19 |
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nona pose la question :
If inputs increase by 30% and outputs increase by 15%, what is the percentage change in productivity?
Stephen La Rocque lui répond. |
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Scalar triple product and volume of a general tetrahedron |
2007-08-03 |
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Anurag pose la question :
how do you prove that
volume of tetrahedron= 1/12 times scalar triple product of vectors a,b and c?
Stephen La Rocque 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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An octagonal bird house |
2007-01-13 |
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Soren pose la question :
I'm in the process of building a birdhouse that is an octagon (based on previous questions, looks like that's a familiar tune). The essential elements are known, but I get stuck when trying to determine the angle for the cuts that would be made to the thickness of the wood so that they all fit together when assembled. Each octagonal section is 7 inches in width and the peak of the roof will be 2 inches higher than the sides. My sense is that the angle cuts that need to be made to the 'height' of each piece of wood. By height I mean the thinnest part of the wood that is neither the length nor the width to use colloquial terms. While it's clear that a slight angle is needed, it would seem that the angle would necessarily change as the distance from the top of any one side to the peak changes. Please advise if more clarification is needed. The 2 inches is random and can be changed if more convenient. Whew!
Harley Weston lui répond. |
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Products with symbols |
2007-01-09 |
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Jennifer pose la question :
Find the product of each
(8x)(-4)
(3x)(5y)(7z)
(8x^3y)-5X^2)
(6a)(3a)(-b^2)
Penny Nom lui répond. |
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The product of of two rotations |
2006-12-17 |
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Katie pose la question :
Is the product of of two rotations over a different center point always a translation?
Walter Whiteley 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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The product of polynomials |
2006-07-13 |
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Lynne pose la question :
If you multiply two polynomials, what can you say about the degree of their product? What exponent applies here?
Stephen La Rocque lui répond. |
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A product equals a sum |
2005-03-27 |
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Tor pose la question :
Can you please help me with a general formula for the following system:
2+2=2*2
3+3/2=3*3/2
4+4/3=4*4/3
and how will you prove the formula?
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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Vectors |
2004-07-06 |
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Annie pose la question :
a=3i-j+2k and b=i+3j-2k, determine the magnitude and direction cosines of the product vector and show that it is perpendicular to a vector c=9i+2j+2k.
Chris Fisher lui répond. |
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The product of any n consecutive integers |
2004-01-18 |
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Fazia pose la question :
I have to prove that the product of any n consecutive integers is divisible by n!(eg:the product of five consecutive integers is divisible by 5!) It's easy enough to plug in numbers and prove it is true, but i'm finding it difficult to come up with a proper proof.
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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10,000 |
2003-10-08 |
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Nathan pose la question :
what two numbers make the product of 10,000. Neither number can end in a zero
Penny Nom lui répond. |
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The product of four consecutive integers is 3024. |
2003-04-25 |
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pillar pose la question :
The product of four consecutive integers is 3024. What are those numbers.
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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Multiplying vectors |
2001-10-22 |
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Murray pose la question :
Could you please explain why a vector times a vector is a scalar and how to derive the formula vector a * vector b = ab cos(a,b)
Harley Weston lui répond. |
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The solutions of a quadratic |
2001-01-30 |
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A student pose la question :
- Show that the product of the solutions of ax2 + bx + c = 0 is c/a.
- For each equation under the given condition, (a) find k and
(b) find the other solution. kx2 - 2x + k = 0; one solution is -3
Penny Nom lui répond. |
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Multiplying decimals |
2000-10-16 |
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Lily pose la question :
I need help with mutiplying decimals (example) 2.28*0.48( * = times).
Harley Weston 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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A negative times a negative |
2000-02-29 |
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Michael J. Butler pose la question :
I have reviewed the answer in relation to the question of why (-3)x(-2)=6; however, I am still not able to properly explain the reasoning to my son, Jonathan, who is in grade 7. I want him to understand the reason for the rule that the multiplication or division of two negative numbers equals a positive number. Can you help?
Chris Fisher lui répond. |
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Area of a triangle from vertex coordinates |
1999-04-21 |
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Mark Tyler pose la question :
I'm no schoolkid, but I liked your answers about triangles. You might enjoy a quick look at this, the kids may too. I was working on a Voronoi dual where I had to calculate the areas of very many triangles expressed as vertex coordinates, so I derived the following very direct formula: A = abs((x1-x2)*(y1-y3)-(y1-y2)*(x1-x3)) for triangle (x1,y1)(x2,y2)(x3,y3) I've never seen this in a textbook. Is it original? I doubt it, the proof is only a few lines long. Regardless, it may be fun for the kids, even if it's not on the curriculum.
Walter Whitley lui répond. |
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A Sum or Product of Fractions |
1998-10-06 |
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Emily Robb pose la question :
Find a pair of fractions that when they are multiplyed and added the sum /product is the same
Penny Nom lui répond. |
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Matrices |
1998-03-10 |
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Ksya pose la question :
- A and B are matrices. If A^n=B^n, can we say A=B or det(A)=det(B) or det(A)^n=det(B)^n ? Any conditions ???
- If B^(-1) is the inverse of B, where B is a matrices. Can we say [(B^(-1))^n][B^n]=I, where I is identity matrices? Any conditions???
Doug Farenick lui répond. |
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Mathematical Induction and the Derivative |
1997-03-18 |
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Shuling Chong pose la question :
"Obtain a formula for the nth derivative of the product of two functions, and prove the formula by induction on n." Any educated tries are appreciated.
Penny Nom lui répond. |
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(-3)x(-2) |
1995-10-25 |
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Azmat pose la question :
Why is (-3)x(-2) = 6?
Herley Weston and Ed Giesbrecht lui répond. |
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