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Mystery mathematician |
2001-10-08 |
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A student pose la question :
Theres a mathematician that was born on October 16 1879 in England and died on October 1 1921 in England. Suffered from severe disabilities. Did poorly in his degree and settled for a pass degree. Was awarded the Allen scholarship for research in 1904. He also applied logic to Physics in papers such as On Some Points in the Foundation of Mathematical Physics (1908). Who is it?
Claude Tardif lui répond. |
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15 mice in 4 cages |
2001-10-08 |
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Chelsea pose la question :
How can you fit 15 mice into 4 cages with an odd number of mice in each cage?
Claude Tardif and Harley Weston lui répond. |
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Finite differences |
2001-10-08 |
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Murray pose la question :
My name is Murray and I am a 10th grade student. Me and my friend have recently discovered and proved a theorem of a relitively advanced nature. It is that the the nth difference of an nth degree equation = n! times the coefficient of the highest power. One of my teachers said this theorem is part finite and that she thinks she has seen it before, but she does not remember what it is called, at what level it is taught, who discovered it or when it was invented. I would greatly appretiate answers to any of these questions.
Chris Fisher lui répond. |
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Locusts |
2001-10-08 |
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A parent pose la question :
JOHN CONJECTURED THAT BOTH 13-YR.&17-YR. LOCUSTS CAME OUT THE SAME YEAR. ASSUME IT IS CORRECT. HOW MANY YEARS PASS BETWEEN THE YRS. WHEN BOTH 13 YR. & 17YR. LOCUSTS ARE OUT AT THE SAME TIME? EXPLAIN. NEXT, SUPPOSE THERE WERE 12YR.,14 YR.,& 16YR. LO- CUSTS,& THEY ALL COME OUT THIS YR. HOW MANY YRS. WILL IT BE BEFORE THEY ALL COME OUT TOGETHER AGAIN?
Leeanne Boehm lui répond. |
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Simplify the expression |
2001-10-08 |
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Natalia pose la question :
simplify expression 4(x-7)+(-5x)=-10
Leeanne Boehm lui répond. |
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Percentage in our daily lives |
2001-10-08 |
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Natasha pose la question :
What are the uses of percentage in our daily lives?
Leeanne Boehm lui répond. |
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The amount of gravel needed to fill a hole |
2001-10-06 |
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Rhett pose la question :
My name is Rhett and my problem is...I am a contractor and I am having problems determining the amount of gravel(in tonnage) needed to fill this hole,the measurements are 60' in length,22' in width,and 14' in height....the problem is that it is not a usual box shaped hole or in this case a rectangle shaped hole,but more of a triangular shaped hole.I refer to the triangular shape as the interior shape of the crater not the exterior,which is shaped like the above dimensions.If you could help it would be greatly appreciated.P.s.This was a retaining wall project,built by myself, in front of a sloped end of a yard,so if you could imagine a 14" high hill with a landslide looking face,then build in your mind a three sided rectangle in front of it using the hill side that slopes as the fourth side of the rectangle,then you may be able to imagine what I mean as a triangular shaped interior of the hole.
Penny Nom lui répond. |
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Subtracting 5 from 25 |
2001-10-05 |
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Melissa pose la question :
How many times can you subtract the number 5 from 25?
Leeanne Boehm lui répond. |
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A circle and a triangle |
2001-10-04 |
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Christina pose la question :
The points (3,4), (9.-2), and (-3,-2) define a circle and a triangle. - find the areas of the circle and the triangle. Find the difference between their areas.
- Find the length of a side of a square with the same area as the triangle.
- Find the length of a side of a Square with the same are as the circle.
Penny Nom lui répond. |
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A Norman window |
2001-10-04 |
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Erin pose la question :
A Norman window has the shape of a rectangle surmounted by a semicircle. If the perimeter of the window is 30 ft, express the atrea, A, as a function of the width x of the window.
Penny Nom lui répond. |
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Zero as an exponent |
2001-10-04 |
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Wendy pose la question :
How do I explain to kids that i.e. 5 exponent 0 = 1? Does 0 exponent 0 = 1?
Leeanne Boehm and Penny Nom lui répond. |
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Who owns what pet? |
2001-10-03 |
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A parent pose la question :
Don, Frank, Jenny, and Ken each come from one state, either Alaska, Maine, Montana, or Oklahoma. They each speak one primary language, either English, french, Russian, or Spanish. And they each have one of four pets, a chinchilla, a dog, a hamster, or a turtle. Figure out which language and what pet each of the four people have, using the following clues.
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Judi McDonald lui répond. |
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A polygon with five sides |
2001-10-03 |
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A student pose la question :
I was asked a question in 5th grade today that goes: i am a polygon with five sides and 2 right angles what do i look like and what is my name
Penny Nom lui répond. |
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The height of the lamppost |
2001-10-02 |
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Werner pose la question :
I am working on question 51,section 3.7 ,page 191 of Stewart's Single Variable Calculus. The question involves a lamp post which is casting a shadow around the eliipse whose formula is x2 + 4*y2 = 5. I have found the derivative of the elllipse both explicitly: x/4(((5-x2)/4)0.5) and implicitly : y' = - x/(4*y).
Harley Weston lui répond. |
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(x^2-5x-6)/(x-6) |
2001-10-02 |
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Bill pose la question :
given f(x) = (x2-5x-6)/(x-6) find f'(6).
Harley Weston lui répond. |
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