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Mr. Edgecomb's math exam |
2000-09-17 |
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Rachel pose la question :
In Mr. Edgecomb's math class, 30 students took an exam on statistics. If the average passing grade was 84, the average failing grade was 60, and the overall average was 80, how many students passed the test?
Penny Nom lui répond. |
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Le volume d'une sphère |
2000-09-17 |
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Pitmill pose la question :
merci de me donner la formule pour trouver le volume d'une sphère.
Harley Weston lui répond. |
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Tessellations |
2000-09-17 |
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Lindsay pose la question :
What is the word that means a shape repeated over and over again to make something like a quilt pattern? Note: I'm pretty sure it is either a fractal or tesselation. Could it be that the pattern itself is a fractal but the entire quilt would be a tesselation?
Chris Fisher lui répond. |
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1234567890 |
2000-09-14 |
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Bradley Kloetzly pose la question :
Can you find two whole numbers, with the smallest possible difference between them, which when multipled together equal: 1234567890?
Harley Weston lui répond. |
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6-49 |
2000-09-14 |
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Steve pose la question :
In our state lottery you must choose 6 numbers (1-49). How many different combinations are there? They can be in any order.
Harley Weston lui répond. |
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Rounding |
2000-09-14 |
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MaryAnn pose la question :
How many whole numbers rounded to the hundreds place, round to 400? Can you also explain why?
Penny Nom lui répond. |
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Two linear equations |
2000-09-14 |
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David Dean pose la question :
2a + 1b = 3.39 3a + 3b = 6.59
What formula do I use to find what a = ?
Harley Weston lui répond. |
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The smaller of a and b |
2000-09-14 |
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Jenna pose la question :
For any two real numbers, a and b, give a mathematical expression in terms of a and b that will yield the smaller of the two numbers. Your expression should work regardless of whether a>b, a
Penny Nom lui répond. |
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Rational Numbers |
2000-09-14 |
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Josh Kuhar pose la question :
How can you tell a number is rational?
Harley Weston lui répond. |
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1 + 2 + 3 + ... + 50 |
2000-09-14 |
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Vicki Charron pose la question :
How can you calculate the total of the numbers one through fifty, without adding up the individual numbers?
Penny Nom lui répond. |
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7 - - - - 77 |
2000-09-13 |
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Peter pose la question :
Does anyone know how to solve the following:
7 _ _ _ _ 77 ? I have to find the missing values.
Chris Fisher and Walter Whiteley lui répond. |
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4-digit numbers using 7, 8, 9 and 0 |
2000-09-13 |
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Ryan pose la question :
Could you please help me with the following problem, How many different 4-digit numbers are there that use each of the digits 7,8,9,and 0? Please list them.
Penny Nom lui répond. |
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Manipulating powers |
2000-09-13 |
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Phil pose la question :
21/5 x 42/5 = ?
Penny Nom lui répond. |
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Flim |
2000-09-12 |
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Jodi and Ari pose la question :
Can you tell us the definition of the word FLIM? My daughter is in 4th grade, and this came up. Could not find it in the Websters Dictionary.
Chris Fisher lui répond. |
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Selling chickens |
2000-09-12 |
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Rick pose la question :
A man raised chickens. He sold all but 8 of them. The first buyer bought 1/3 of all the chickens + 2/3 of a single chicken. The second buyer bought 1/3 of the remaining chickens + 1/3 of a single chicken. The third buyer bought 1/3 of the remainder + 2/3 of a chicken. How many chickens did the seller own before selling any? All chickens were alive and whole when the buyers received them.
Penny Nom lui répond. |
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