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Two pieces of rope 2016-05-21
Render pose la question :
Fred cuts a 12- inch piece of rope. Then he cuts a second piece of rope that is 3/2 longer than the first piece. Is the second piece shorter or longer than the first piece? Explain.
Penny Nom lui répond.
Problem solving with fractions 2013-12-03
Jennie pose la question :
Paul has 2/3 as many postcards as Shawn. Shawn has 3/5 as many postcards as Tim. If the 3 boys have 280 postcards, how many more postcards does Tim have than Paul?
Penny Nom lui répond.
birdhouse in the shape of a rectangular prism 2012-10-29
Tiffany pose la question :
Hello, I am Tiff M. from NYC.
I was solving a math problem about adding,subtracting,multiplying or dividing fractions and mixed numbers. I am not getting this question below.
* Laura is building a birdhouse in the shape of a rectangular prism. The base of the birdhouse has an area of 5 square inches. The height of the birdhouse is 2 7/12 inches. Laura calculated the volume of the bird house to be 10 7/12in. Is she correct?
If not, what did she do wrong?

Robert Dawson lui répond.
Multiplying binomials 2012-05-14
Jordan pose la question :
How do I solve the equation:
3(x+4)(x-6)

Penny Nom lui répond.
Liquid in a horizontal tank 2010-05-26
Brian pose la question :
I have a 50' long tank by 12' diameter it is lying down on it side with 12" of Liquid in the bottom i need to know how many gallons of fluid this is? Please Help, I was able to calculate out the Triangle but not the Sector!
Harley Weston lui répond.
Multiplying in different bases 2009-02-25
Susan pose la question :
11 base 2 X 22 base 3 + 33 base 4 = _________ base 5
Robert Dawson lui répond.
Multiplying negative numbers 2009-01-15
stephanie pose la question :
hi, I'm currently working in a grade 8 class where the students are learning about integers. the students were asked to find examples of how integers are applied in real life. they were able to find aplications for: adding and subtracting both positive and negative integers. however, we could not find an example of where two negative integers would be either divided or multiplied together in real life. For example: (-2)(-4)= +8. please help.
Harley Weston lui répond.
A barrel on its side 2008-11-13
Dave pose la question :
Question from Dave:

How many gallons are left in a 36x60 in. barrel (laying on its side) and has 16 in. of gasoline left. I have attached a diagram.

Harley Weston lui répond.
Multiplying decimal numbers 2008-02-05
alwyn pose la question :
Why should when you Multiplying Decimal numbers is value becoming less and less? don't you think even decimal number is a quantity and in no chance when it multiplies its should become less or nil !!!

In fact all Multiplying and or adding the value will go up and only when you subtract and divide it should become less !!

Stephen La Rocque and Penny Nom lui répond.
Fractions of fractions 2007-07-18
Bridget pose la question :
Sam and Mary each owned one-half stock in a printing company. Sam sold 2/3 of his stock to Mary. What fractional part of the printing business does Mary now own?
Penny Nom lui répond.
A 15% tip 2006-12-06
Danielle pose la question :
When she eats at a restaurant,Viviana like to leave a 15% tip,multiplying the price of the meal by 0.15. Franklin usually leaves a 20% tip,multiplying the price by 0.20.They both round up to the nearest $0.05. How much tip would Viviana leave for a $24.85 meal?
Penny Nom lui répond.
Probability of getting their stories straight 2006-04-05
Amy pose la question :
Four students drive to school in the same car. They claim they were late because they had a flat tire. Assuming they did not have a flat tire what is the probability that they all would choose the same tire if asked which one was flat.
Stephen La Rocque lui répond.
Who is lying? 2006-01-14
Diane pose la question :
A business man was working in his home office when he realized he had left a five-dollar bill in the book he had been reading. He called his butler to bring him the book from the library. When he got the book, the bill was no longer there. He then questioned the maid and the butler. The maid remembered seeing the bill between pages 99 and 100 in a book to the left of a business book. The butler did not recall seeing the bill, but was sure the book was to the right of the business book, because to the left of it there was a statistics book. Who is lying?
Penny Nom lui répond.
Multiplying two algebraic fractions 2004-10-31
A parent pose la question :
Multiply:

x+2 x²-4
----- x -------
x-2 x²+x-2


Harley Weston lui répond.
Multiplying decimals 2002-03-10
Kaitlin pose la question :
I just recently had a test on multiplying decimals and I did not do really well on it. Only 5 kids out of 19 got a passing grade. My teacher says that she will give us a different test and we can take it again, but I'm still not sure of it. My teacher has taught me a lot and she had done a wonderful job of it but I'm just confused with where to put the decimals and stuff like that. I have a math practice workbook that I do for fun and they have nothing on decimals in it. I have checked on websites to try to find worksheets but I really couldn't find a good one. Can you please help me either give me some tips or clues or send me a worksheet.
Penny Nom lui répond.
Multiplying vectors 2001-10-22
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.
Multiplying binomials 2001-09-08
A student pose la question :
(x+1)(x+2)=?
(2x-1)(x-4)=0
please tell me this question!!

Leeanne Boehm lui répond.
(-2b+3)(-b-1) 2001-02-06
Melissa pose la question :
Alright, lets say you are multiplying (-2b+3)(-b-1) and you are using "FOIL" first you would get : 2b2+2b-3b-3 then you add like-terms. when multiplying,if the bases are the same, add the exponents...does the same thing apply when you are adding the results of the multiplication even though it's addition?

would the answer be 2b3-3b-3 or would it be 2b2-b-3?


Penny Nom lui répond.
7x6 by doubling 2001-01-23
A student pose la question :
Can you think of a way to use doubling to multiply 6x7?
Allen Herman lui répond.
Multiplying decimals 2000-10-16
Lily pose la question :
I need help with mutiplying decimals (example) 2.28*0.48( * = times).
Harley Weston lui répond.
Multiplying fractions 2000-05-14
A student pose la question :
75/2 x 1/100 = 3/8

Please show how to came up with the answer?
Penny Nom lui répond.

 
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