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Taking matches |
2001-05-05 |
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From Mark:
Two piles of matches are on a table. A player can remove a match from either pile or a match from both piles. The player who takes the last match loses. If there are two players, how should you play?
Answered by Claude Tardif. |
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Probabilities and dice. |
2001-05-04 |
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From Carmen:
Hi! My name is Carmen! I am a member of a grade 5 class in Edmonton, AB. We were talking about probability in math, and I was wanted to know what the probability (odds) of rolling two sixes would be rolling two dice? If it is not to diffucult could you tell me what the probability (odds) of rolling any number with two dice were?
Answered by Andrei Volodin and Penny Nom. |
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How many acres are in a square mile? |
2001-05-04 |
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From Terri:
How many acres are in a square mile?
Answered by Judi McDonald. |
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Adding and subtracting rational expressions |
2001-05-03 |
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From Donna:
Adding and subtracting Rational expressions. I am in grade 10 and I am a student here is an example of the questions: 1/(x+1) - 1/(x-1) = ?
Answered by Penny Nom. |
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Are you overweight? |
2001-05-03 |
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From Oneita:
How do I square a number.....? My problem is : square your height in inches and take 4.25 percent of the result to determine if you are overweight.
Answered by Claude Tardif. |
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Les tableaux de conversions |
2001-05-03 |
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From Jean-Jacques:
Sur quel site est il possible de trouver tous les tableaux de conversions de mètres,kg,litre,m2,m3 Quelle est la relation entre les m3 et les litres 1 m3 = 1000 litres = 1000 kg?
Answered by Claude Tardif. |
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Logs for the fire |
2001-05-02 |
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From Tom:
Three girls named Amanda, Beatrice, and Cleo visit a summer cottage. Amanda brings 5 logs for the fire, Beatrice brings 3 logs and Cleo contributes 80 cents. How should the money be divided among the other two girls so that each of the three is felt to have contributed equally to the cost of the fire.
Answered by Penny Nom. |
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Graphing equations |
2001-05-01 |
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From A student:
If, for example, 4x2-12x+9=0 and -4x2+12x-9=0, which I'm assuming it does since you can derive that equation from the first, why do those two equations have different graphs?
Answered by Penny Nom. |
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Tiling a floor |
2001-05-01 |
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From Sarah:
Cut out of paper or cardboard a quadrilateral having no two sides parallel, no two sides of equal length and no indentations. Can an endless floor be tiled with copies of such a figure?
Answered by Claude Tardif. |
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Area of a regular polygon |
2001-05-01 |
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From Carl:
What is the formula for finding the area of a regular Hexagon and a regular Pentagon
Answered by Penny Nom. |
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Population growth |
2001-05-01 |
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From Gina:
Suppose the population of a country increases at a steady rate of 3% a year. If the population is 50 million at a certain time, what will it be 25 years later? Define the recurrence relation that solves this problem.
Answered by Penny Nom. |
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Average speed |
2001-05-01 |
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From Tom:
A ship goes in one direction, west to Hawaii, at 20 nautical miles per hour and, because of the wind, makes the return trip at 30 nautical miles per hour. What is the average speed?
Answered by Claude Tardif. |
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Typing a project |
2001-05-01 |
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From Tom:
Two students have to type a project. One can do it in 2 hours. It would take the other student three hours. They have 2 type writers. How fast can they finish by working simultaneously?
Answered by Claude Tardif. |
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A sequence defined recursively |
2001-05-01 |
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From A student:
A sequence s is defined recursively as follows: s0=1
s1=2
sk=2sk-2 for all integers - Compute s2,s3,s4... to guess an explicit formula for the sequence sk.
Answered by Penny Nom. |
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A sequence of even terms |
2001-04-29 |
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From A student:
A sequence c is defined recursively as follows: c0 = 2
c1 = 4
c2 = 6 ck= 5ck-3 for all integers Prove that cn is even for all integers.
Answered by Leeanne Boehm and Penny Nom. |
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