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I have a 6 digits |
2007-09-28 |
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From Kim: I have a 6 digits. My hundred-thousands digit is 1 less that my ones digit, 8 more than my thousands digit, twice my tens digit, and 4 times my hundreds digit. My ten-thousands digit is 0. What number am I? Answered by Stephen La Rocque. |
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The country with the most universities |
2007-09-28 |
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From j: the country with the most universities is india followed by the united states. If india has 2649 more universities than united state and there combine total is 14,165, find the number of universities in india and the number in the united states. Answered by Stephen La Rocque. |
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Four consecutive integers |
2007-09-28 |
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From Joshua: We were given a question that involved consecutive integers. I can not seem to solve this question and I am the top student in my class.The question states: Find four consecutive integers such that twice the sum of the two greater integers exceeds three times the first by 91. How do you solve this question? Thank you very much for your support. Answered by Penny Nom, Stephen la Rocque and Claude Tardif. |
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Size of a sphere fitting inside a cone |
2007-09-27 |
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From Juan: I am supposed to find the largest sphere that
will fit into a cone. I am assuming is a maximizing problem, but I am not sure
of what relation (between a cone and a sphere) to use. Answered by Penny Nom and Stephen La Rocque. |
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The area of a roof |
2007-09-27 |
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From RANDY: I have an area of roof. It's in a sort of triangle.
it's 25' across the top
30' at each edge
86' across the bottom Answered by Stephen La Rocque. |
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A normal distribution problem |
2007-09-27 |
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From m.j.: Car Loan Rates The national average for a new car loan was 8.28%. If the rate is normally distributed with a standard deviation of 3.5%, find these probabilities.
a. One can receive a rate less than 9%.
b. One can receive a rate less than 8%. Answered by Harley Weston. |
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400 square yards of sidewalk |
2007-09-27 |
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From Vanessa: I am having a small problem being a subcontractor
I'll having trouble calculating how much concrete it will take to pour a 400 square yard sidewalk 5' wide 4" depth can you show me the equation to figure out how many yards of concrete i will need. Can you help me please?
Thank you very much and have a wonderful day. Answered by Penny Nom. |
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Peter and Charles mow a lawn |
2007-09-27 |
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From Nancy: Peter takes 15 minutes longer to mow the lawn by himself than Charles does. Together they can mow the lawn in 18 minutes. How long would it take Charles to mow the lawn by himself? Answered by Stephen La Rocque. |
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The game of 24 |
2007-09-27 |
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From Amanda: I'm really stumped on a 24 math game question from math class. The numbers are 7,11,17,and 20. Help?? Answered by Claude Tardif. |
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How can that be? |
2007-09-26 |
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From Ken: Al and I have 10 computers on a shelf
10 Team Members came passing by
Each took a computer off the shelf,
leaving 9 computers still on the shelf
How can that be? Answered by Stephen La Rocque. |
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Four digit odd numbers |
2007-09-26 |
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From sonia: how many 4 digit odd numbers can be made using the digits 2, 5, 7, and 8 Answered by Penny Nom. |
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x= (y/z)ln((1+a^2)/(1-a^2)) |
2007-09-26 |
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From John: If
x= (y/z)ln((1+a^2)/(1-a^2))
Please solve for 'a'
Thanks in advance! Answered by Penny Nom. |
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Exponents |
2007-09-26 |
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From Calvin: Exponential form
5 3exponent x 5 4exponent divide 5 2exponent Answered by Stephen La Rocque. |
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A tangent line to a circle |
2007-09-26 |
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From Randy: Find the equation of the tangent line at coordinates (-1 , 4)
on the circle x^2 + y^2 - 4x - 21 = 0
I would like to learn the fastest way to relate any coordinates of a circle
to any possible point of tangency. Answered by Stephen La Rocque. |
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T-totals |
2007-09-26 |
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From Asma: I wanted to know what i should include in my T-totals maths coursework and also how i should lay out the coursework? Answered by Penny Nom. |
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