 |
|
|
|
|
|
|
|
|
How many zeros? |
2000-04-09 |
|
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. |
|
|
|
|
|
|
2^32 + 1 |
2000-04-08 |
|
Un Etudiant pose la question :
232 +1 can be divided by 641 , why?
Claude Tradif lui répond. |
|
|
|
|
|
|
Star-multiplication |
2000-04-07 |
|
Greg Potts pose la question :
I have this question to answer and I don't know where to start. 1*9=0, 9*8=72 and 2*8=9, then 9*9 =?
Penny Nom lui répond. |
|
|
|
|
|
|
42% of 70 |
2000-04-07 |
|
Nikkie pose la question :
What is 42% of 70?
Penny Nom lui répond. |
|
|
|
|
|
|
Surface area of a cylinder |
2000-04-07 |
|
Jim Campbell pose la question :
I am going to cover the outside of a shaft with some material. How do I figure the square inches of the outside surface of the shaft? Shaft is 6" in diameter and 24" long
Harley Weston lui répond. |
|
|
|
|
|
|
History of a meter |
2000-04-07 |
|
Jarod Fischer pose la question :
The length of a meter has been determined in three different ways. The first and original way was determined in 1798. The second way was determined in 1960. The third and current way was determined in 1983. What were the three ways and why were the first two abandoned?
Harley Weston lui répond. |
|
|
|
|
|
|
Lining a cone |
2000-04-06 |
|
Jim Campbell pose la question :
I am not a student, I am trying to solve a business problem. The question. If I want to put a lining in a chute that is cone shaped, how do I calculate the size steel plate I need to do that. The cone is 10' in diameter at the top and has a 20" hole at the bottom. The total height of the chute is 8'.
Harley Weston lui répond. |
|
|
|
|
|
|
Why are equivalent fractions equal? |
2000-04-05 |
|
An elementary student pose la question :
What is the mathematical reason equivalent fractions are equal?
Penny Nom lui répond. |
|
|
|
|
|
|
y = x^x^x^x... |
2000-04-05 |
|
Michael Hackman pose la question :
Find the derivative of: y = x^x^x^x... on to infinity.
Claude Tardif lui répond. |
|
|
|
|
|
|
How many grams are in 1 ounce? |
2000-04-04 |
|
Kathy G pose la question :
How many grams are in 1 ounce?
Penny Nom lui répond. |
|
|
|
|
|
|
Manipulatives |
2000-04-04 |
|
Jodi Stuker pose la question :
I am a student looking for a good lesson plan using manipulatives to teach multiplication to LD students. They are currently functioning on approximately 3rd grade level in math but are age 12-14.
Penny Nom lui répond. |
|
|
|
|
|
|
Nim |
2000-04-04 |
|
Sandy Daniel pose la question :
Could you please give me any information on this Math Fair topic?
Claude Tardif lui répond. |
|
|
|
|
|
|
The square root of 3 |
2000-04-04 |
|
Mr. William pose la question :
Prove that root 3 is irrational
Harley Weston lui répond. |
|
|
|
|
|
|
The side length ratios of some triangles |
2000-04-04 |
|
Alexis Lockwood pose la question :
I am doing a project for my Math 30B class regarding the side length ratios of 45-45-90 degree and 30-60-90 degree triangles. I would really appreciate any assistance in answering the following questions, or even direction to an appropriate web site or resource on the matter.
Harley Weston lui répond. |
|
|
|
|
|
|
Interest compounded daily |
2000-04-03 |
|
Debbie Bracken pose la question :
How do I figure interest that is compounded daily? 8% compounded daily.
Penny nom lui répond. |
|
|
