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Miles per hour |
2002-11-28 |
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Liz pose la question :
If a car has traveled 16 miles in 30 minutes, how many miles per hour did they go?
Penny Nom lui répond. |
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The length of an arc |
2002-11-27 |
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Nancy pose la question :
If all I have is the length between 2 ends of an arc (72"), how do I find the length of the arc at its apex and the radius?
Penny Nom lui répond. |
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Combinations of 1,2,3,...,10 |
2002-11-27 |
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Gord pose la question :
If I had the numbers from 1-10 how many different combinations would i have.....would it be 100....since that is 10 squared.
Penny Nom lui répond. |
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[x*(x+2)] + 1 = (x+1)(x+1) |
2002-11-27 |
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Melissa pose la question :
While teaching the multiplication table to my daughter I noticed an interesting pattern. It goes something like ...Take a whole number
...add two to it
...multiply the two numbers together
...add one to the resulting number
...it will now be equal to the original number plus one, squared.
Claude Tardif lui répond. |
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Making 7 |
2002-11-26 |
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Bill pose la question :
At one time I had the answer to this math equation but I have lost it and can't seem to regain it. I may be going at it wrong but as I recall there were the numbers 1 through 4, and the std operators, +, -, /, *, and parentheses. The object was to make the four numbers with the operators equal to 7. Each number and operator may be used only once. My 9 year old loves these quizzes but I can't give it to her if I can't provide the correct answer.
Claude Tardif lui répond. |
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A two stage rocket |
2002-11-26 |
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Hoda pose la question :
a two stage rocket accelerates in free space by ejecting fuel at a constant relative speed , v(ex). the full fuel load makes up 80% of the initial mass of the entire two stage rocket . the rocket accelerates from rest until at the end of the first stage when 75% of its fuel has been burnt. find an expression for the speed of the rocket at the end of the first stage in terms of v(ex).
Claude Tardif lui répond. |
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A lampshade from a cone |
2002-11-26 |
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Ellsie pose la question :
I need to make a pattern to cover an old lampshade. This is actually the bottom portion of a cone. Please help me figure out how to draw this pattern, so that we can complete our project.
Penny Nom lui répond. |
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Un exposant negatif |
2002-11-25 |
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Vinny pose la question :
Moi je n'ai aucune idée de ce que vaut un exposant negatif com 3^(-5) ou encore 3^(-4/3) de meme pour un exposant rationnel 3^(4/3)
Claude Tardif lui répond. |
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Decimals in everyday life |
2002-11-24 |
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Fritz pose la question :
How do you use decimals in your every day life?
Penny Nom lui répond. |
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Factor completely |
2002-11-21 |
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Shelley pose la question :
these two questions are to be factored completely but i have no idea how to factor them - (x-4y) 2 - 3(x-4y) - 4
- x 6 + y 6
Penny Nom lui répond. |
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Filling A swimming pool |
2002-11-21 |
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Sarah pose la question :
A swimming pool is being filled by three pumps. Alone pump A would take 6 hours, pump B would take 3 hours, and pump C would take 3 hours. If all three pumps are used to fill the pool, what fraction of the process is pump A.
Penny Nom lui répond. |
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The volume of a juice jug |
2002-11-21 |
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Edward pose la question :
I try to find the measurement for a juice jug. I have the height of the jug and need the jug to hold 2.5 Liter of juice. Can you help me out with the formula.
Penny Nom lui répond. |
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Performance reviews |
2002-11-21 |
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Lara pose la question :
Perhaps you can help. He's doing performance reviews at work. The average performance review is 3.92 on a 5.0 scale. This person would receive a 3.5% raise for next year. The highest performance review is 4.9 and this person would recieve a 6.0% raise for next year. How do I solve for the other performance review numbers.
Penny Nom lui répond. |
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What percent is the same as three eighths? |
2002-11-21 |
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Katelin pose la question :
What is the percent of three eight's?
Penny Nom lui répond. |
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Composites, primes, factors and common factors |
2002-11-20 |
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Connie pose la question :
My son can't remember what a composite number is, what a prime number is and the explaination of factors and common factors. Help!
Penny Nom lui répond. |
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