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Rolling a six on the sixth roll |
2009-05-04 |
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From Scott: What are the odds of rolling a die 6 times in a row and rolling a 6 only on the 6th try, but not any other time? And how is this calculated? Answered by Harley Weston. |
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Practical trigonometry |
2009-05-04 |
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From Lori: I am an ex-math major turned home-schooling parent. I would desperately like to find a word-problem based trigonometry book for my 17-year old son. I don't want graphing or other gobbledy-gook that he'll never use. Does such a thing exist? Answered by Robert Dawson. |
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A hexagon inside a triangle |
2009-05-03 |
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From Brian: How do you figure out the area of an equilateral triangle with only the clue of a regular hexagon perfectly inside it (no boarders) and the only thing you know about the hexagon is it has an area of 12cm^2? Answered by Stephen La Rocque. |
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Mean |
2009-05-02 |
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From debra: a hot dog sales per week monday, 100 = tuesday,87 = wednesday, 95 = thursday, 125 = friday, 210 = saturday, 250 = sunday, 57 = what is the mean sales per day? Answered by Penny Nom. |
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Mixing drinks |
2009-05-02 |
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From samantha: If Steven can mix 20 drinks in 5 minutes, Sue can mix 20 drinks in 10 minutes and Jack can mix 20 drinks in 15 minutes. How much time will it take all 3of them working together to mix the 20 drinks? Answered by Stephen La Rocque and Claude Tardif. |
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A 6 team social softball league |
2009-05-02 |
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From Don: Hi
We have a 6 team social softball league with only two fields. Each team
plays two games each Saturday. We have three time slots 10:00, 12:00
and 2:00 We play for 11 Saturdays and than have a 2 weekend playoff.
All teams prefer double headers vs the split at 10:00and 2:00. How do we
schedule as balanced a schedule as possible and minmize the splits ?
Thanks
Don Answered by Laura Morrison and Victoria West. |
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Game of 24 |
2009-05-02 |
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From Barbara: using the numbers 1,3 7 and 9 only once how do you get the answer of 24 Answered by Claude Tardif. |
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How do you convert 1248 to base 6? |
2009-05-02 |
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From Tamara: How do you convert 1248 to base 6? Answered by Penny Nom. |
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Stairway construction |
2009-05-02 |
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From Olivia: Hi, I'm Olivia and I'm in 8th grade studying algebra 1. I'm having some trouble with my math project. It has to do with rules of stairway construction. It says that there are two generally accepted rules to building stairs.
Rule 1: x+y=43 and x+y=46 (cm)
Rule 2: 2y+x=61 and 2y+x=64 (y is the riser and x is the tread length)
I cant figure out how to graph them...it says they're supposed to intersect to make a square which is like the safety zone for building stairs (the stairs' rise and tread lengths are plotted as points) any points outside of that square are considered unsafe.
Did i explain it ok? Thanks for your help.
--olivia Answered by Penny Nom. |
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Fractions of fractions |
2009-05-02 |
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From Sonya: 9/10 of the students came to school today and 8/9 of the students brought their lunches how many students brought their lunches? Answered by Stephen La Rocque. |
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Rectangular prisms |
2009-05-01 |
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From deborah: Could you please tell me some examples of different objects in the real world of rectangular prisms? Answered by Harley Weston. |
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Decimeters and centimeters |
2009-04-30 |
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From Jeannette: I cannot convert because of a question that throws me off. For example, A mother African elephant avg's 250 dm in height. A newborn baby African elephant avg's 89cm in height. How many cm shorter is the baby African elephant than its mother? Which one do I convert first? in order to subtract the number from the baby? Answered by Penny Nom. |
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Permutations |
2009-04-30 |
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From Evan: There are 24 possible combinations of the numbers 1 through 4, and 5 times that many
combinations of the numbers 1 through 5. Are there 144 (6x24) possible combinations of 1 through
6? Or is it 6x5x24? Is there a formula for determining this?
Thanks,
Evan Answered by Penny Nom. |
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The volume of 3-D figures |
2009-04-29 |
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From Serena: What is the formula for finding the volume of 3-D figures Answered by Robert Dawson. |
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Eight golfers, four days |
2009-04-28 |
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From Billy: A golf Pairing question:
8 Golfers are Playing golf - one round per day
Four days of golf
(four twosomes) are paired each day to play
***No one can play with the same partner more than once
***Everyone must play with every other golfer in his foursome at least once
Is this possible? Answered by Robert Dawson. |
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