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	Cutting a board		2003-01-20
		George pose la question : A person has a sheet of board which he saws into two (2) pieces. The length of the first piece is two thirds the length of the original board, while the length of the second piece is four feet longer than the first piece. How long was the original board? (the length is defined as the longer of the two sides of the board) Penny Nom lui répond.
	Division by zero		2003-01-19
		David pose la question : I've been to your site and am interested on the subject of division by 0. It's easy enough to give answers, but it's very hard, especially in this case, to make someone understand a mathematical problem. It's been about a year since my Calc class, and we never went over division by 0, only infinite numbers and such. My question is: How would you work a problem of (real number) / 0 ? As ignorant as it may sound to you, I am having trouble grasping this since I've only begun to understand some of it. Perhaps you could help. Harley Weston lui répond.
	25% more		2003-01-16
		Charlie pose la question : If I buy something for $10 and want to sell for 25% more, do I multiply by 1.25 or divide by .75? Or another way - why do I get $13.33 when dividing by .75 ? Penny Nom lui répond.
	Radians		2003-01-16
		Erikson pose la question : I am a student in the 10th grade and attending advanced math at my high school. I was assign to do a report about the unit circle and the radian. But there seems to be no information available about the history of the radian; who first found out about them, which civilizations used it if any. Well, hopefully you'll assist me in this troubling question. Thank you for your kind consideration. Penny Nom lui répond.
	0.027 acres		2003-01-16
		Cory Lee pose la question : How many square feet are in How many square feet are in .027 acres?? Penny Nom lui répond.
	NO RED-HATTED DWARVES ALLOWED		2003-01-14
		Dulce pose la question : There are 1000 dwarves in Dwarfland. Now as you know, dwarves are born with either red or white hats on. The dwarves in Dwarfland love to party. Every night, they all flock to the same club to dance the night away. One day, a sign is posted at the club: "NO RED-HATTED DWARVES ALLOWED". A certain number of days pass, after which all of the white-hatted dwarves are in attendance,and none of the reds. How did the red hats know not to come? Assumptions: The number of red and white-hatted dwarves need not be equal. There are at least 1 of each color. There are no reflections or mirrors in Dwarfland (i.e. the dwarves can't see the color of their own hat), and no dwarf can reveal through direct or indirect means the color of another dwarf's hat. There is NO COMMUNICATION among dwarves No white-hatted dwarf ever misses a night of partying Claude Tardif lui répond.
	Collinear Points		2003-01-13
		Gary pose la question : Which of the 4 points are collinear when you construct the following concurrent lines or rays of a triangle? P(1), the point where the angle bisectors intersect. P(2), the point where the altitudes (or extensions) intersect (inside or outside of the triangle). P(3), the point where the medians intersect. P(4), the point where the perpendicular bisectors (or extensions) of the three sides of a triangle intersect. This is for my 9-12 high school class in geometry. My name is Gary Thanks for your help. Gary Harley Weston and Chris Fisher lui répond.
	Would it be worth paying $20K for 4 chances...		2003-01-13
		Steve pose la question : If I've got 4 chances to to achieve X goal, and in each chance that I have I've got a 65% chance of achieving this goal, what is my overall probablity of achieving this goal? Also, what would it be after each of my 4 chances (i.e., for my 2nd chance, would it be (.65 * (.65*.65)? I've forgotten some basic probablity theories, and would appreciate any help on this. With the probablities above, would it be worth paying $20K for 4 chances to achieve the goal or $8.5K for only 1 chance to acheive the goal? (at 65% probability) Andrei Volodin lui répond.
	5x(-2)-32/8		2003-01-13
		A student pose la question : I'm having problems solving this question: 5x(-2)-32/8 Penny Nom lui répond.
	le matricule		2003-01-12
		Sirkka pose la question : "Dans un pays totalitaire, tous les habitants ont un matricule composé de 5 chiffres. Les policiers se reconnaissent au fait que le premier chiffre de leur matricule est strictement supérieur à la somme des quatre autres. ex: 90124 9>0+1+2+4=7 Combien y a-t-il (au plus) de policiers?" Claude Tardif lui répond.
	What is larger than infinity?		2003-01-12
		Dana pose la question : What is larger than infinity? Claude Tardif and Harley Weston lui répond.
	Cubic yards in a gravel pile		2003-01-10
		Ron pose la question : I am looking to find a way to measure gravel piles to get yards. They are generaly not square.it would be like pouring sand out of a bag into a pile. they generaly are concave in dimension. can you help. I have attached a picture to show a small scale what I am working on is in much larger volume. Harley Weston lui répond.
	A rectangular prism		2003-01-09
		Julie pose la question : How many faces on a rectangular prism and how many bases? Can the base also be a face and can a face also be a base? Diane Hanson lui répond.
	Intercepts		2003-01-08
		Nay pose la question : my name is nay 8th grade student how do i figure out an intercep and does it always have to have (0, ) or ( ,0)? Penny Nom lui répond.
	Repeating decimals		2003-01-08
		A student pose la question : If k=.9repeating, and 10k=9.9repeating then 10k-k=9k, k=1 therefore .9repeating=1 and 1/3=.3repeating 3x1/3=.3repeatingx3, 3/3=.9repeating, therefore 1=.9repeating It would seem to me that .9repeating approaches one but never quite makes it. Can you clarify? Penny Nom lui répond.

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