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The "goesinta" box |
2001-02-07 |
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Bridget pose la question : 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. Claude Tardif lui répond. |
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(-2b+3)(-b-1) |
2001-02-06 |
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Melissa pose la question : 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? Penny Nom lui répond. |
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23 + 17 * 2 / 8 + 11 = 13 |
2001-02-02 |
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David pose la question : 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. Claude Tardif lui répond. |
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Which fraction is greater? |
2001-02-01 |
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Carol pose la question : 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! Claude Tardif lui répond. |
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Gross markup |
2001-02-01 |
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Chris pose la question : 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 Penny Nom lui répond. |
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Finding roots |
2001-02-01 |
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A student pose la question : 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? Penny Nom and Claude Tardif lui répond. |
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The solutions of a quadratic |
2001-01-30 |
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A student pose la question :
- 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 Penny Nom lui répond. |
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Why is 0! = 1? |
2001-01-30 |
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Diane pose la question : 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???? Walter Whiteley lui répond. |
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Unscramble these words |
2001-01-30 |
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Myosha pose la question : 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
Claude Tardif lui répond. |
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Two number theory questions |
2001-01-30 |
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Richie pose la question : 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.
Penny Nom lui répond. |
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Subsets of the natural numbers |
2001-01-30 |
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Christina pose la question : How do I explain why the set of natural numbers (N) cannot be equivalent to one of its finite subsets? Penny Nom lui répond. |
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Fractions of fractions |
2001-01-30 |
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Katie pose la question : When you multiply two positive fractions less than 1, how does the answer compare to the size of the fraction? Why? Penny Nom lui répond. |
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Crossing the dessert |
2001-01-29 |
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Zach pose la question : 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? Claude Tardif lui répond. |
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Geometric and arithmetic sequences |
2001-01-26 |
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Garry pose la question : what are the equations for geometric and arithmetic sequences? also, what are the equations for finding the sums of those series? Leeanne Boehm and Penny Nom lui répond. |
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Processing speed |
2001-01-26 |
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Zac pose la question : 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? Leeanne Boehm lui répond. |
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