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The "goesinta" box |
2001-02-07 |
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From Bridget:
We are looking for the "proper" name of the "box" that is drawn around the dividend on a division problem: ___ 3)12 It has always been a family joke to call it the "goesinta" box, but a search of several reference sources hasn't yielded an answer -- This is a question of curiosity rather than a question for homework.
Answered by Claude Tardif. |
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(-2b+3)(-b-1) |
2001-02-06 |
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From Melissa:
Alright, lets say you are multiplying (-2b+3)(-b-1) and you are using "FOIL" first you would get : 2b2+2b-3b-3 then you add like-terms. when multiplying,if the bases are the same, add the exponents...does the same thing apply when you are adding the results of the multiplication even though it's addition? would the answer be 2b3-3b-3 or would it be 2b2-b-3?
Answered by Penny Nom. |
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23 + 17 * 2 / 8 + 11 = 13 |
2001-02-02 |
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From David:
My child is working through basic operations, and gave this problem: 23 + 17 * 2 / 8 + 11 = 13 The teacher wants the parenthesis to be put in the right places to come up with 13.
Answered by Claude Tardif. |
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Which fraction is greater? |
2001-02-01 |
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From Carol:
Hello My name is Carol I am a student teacher! I am asked to aproach these students on their problems. I am unsure of how to explain to them that these are wrong. Can you help? Thanks. Iris claims that if we have two positive rational numbers, the one with the greatest numerator is the greatest. Shirly claim that if we have two positive rational numbers, the one with the greatest denominator is the least. Thanks!
Answered by Claude Tardif. |
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Gross markup |
2001-02-01 |
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From Chris:
| Total | GM | Sell | | $2650 | 40% | $4,416.67 | GM is Gross Margin? do you have any meanings for this like Gross markup etc? Can you show me the working of how you get the 2650 to sell at 4416.67
Answered by Penny Nom. |
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Finding roots |
2001-02-01 |
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From A student:
My math problem is right now we are working on roots. I don't quite understand how to find the answer to the problems, i was wondering what is the easiest, and fastest way to find the answers to roots?
Answered by Penny Nom and Claude Tardif. |
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The solutions of a quadratic |
2001-01-30 |
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From A student:
- Show that the product of the solutions of ax2 + bx + c = 0 is c/a.
- For each equation under the given condition, (a) find k and
(b) find the other solution. kx2 - 2x + k = 0; one solution is -3
Answered by Penny Nom. |
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Why is 0! = 1? |
2001-01-30 |
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From Diane:
Every math book always claims that 1!=1 and 0!=1 are givens, and that we should just memorize it. i understand the 1! part, but where is the basis for claiming that 0!=1????
Answered by Walter Whiteley. |
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Unscramble these words |
2001-01-30 |
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From Myosha:
Hi my name is Myosha. I would be part of the secondary(6~9) class. I need you to unscramble these words & define them for me. - edicnreeff
- rtgeare
- itfrnoca
- lmicdae
- sdvioini
- imrretepe
Answered by Claude Tardif. |
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Two number theory questions |
2001-01-30 |
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From Richie:
i have two questions and they are: - the product of three consecutive prime numbers is 7429. Find the product of the smallest and largest of these three integers.
- the least common multiple of two relatively prime positive integers, a and b, is 144. if a (a>or=2) is as small as possible, compute the value of b.
Answered by Penny Nom. |
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Subsets of the natural numbers |
2001-01-30 |
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From Christina:
How do I explain why the set of natural numbers (N) cannot be equivalent to one of its finite subsets?
Answered by Penny Nom. |
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Fractions of fractions |
2001-01-30 |
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From Katie:
When you multiply two positive fractions less than 1, how does the answer compare to the size of the fraction? Why?
Answered by Penny Nom. |
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Crossing the dessert |
2001-01-29 |
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From Zach:
An Explorer needed to make a 5 day trip across a dessert. Each man with him could carry exactly 3 days food and water. For one man how many men will it take to cross the dessert?
Answered by Claude Tardif. |
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Geometric and arithmetic sequences |
2001-01-26 |
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From Garry:
what are the equations for geometric and arithmetic sequences? also, what are the equations for finding the sums of those series?
Answered by Leeanne Boehm and Penny Nom. |
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Processing speed |
2001-01-26 |
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From Zac:
A COMPUTOR IS ADVERTISED AS HAVING A PROCESSING SPEED OF 11 MILLION INSTRUCTIONS PER SECOND. ON THE AVERAGE, HOW LONG DOSE IT TAKE TO PROCESS ONE INSTRUCTION AT SUCH A SPEED?
Answered by Leeanne Boehm. |
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