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A 15% markup |
2003-02-07 |
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Holly pose la question :
what is 15% markup of 58.89? please show equation and why? which is correct? 58.89 divided by .85 or 58.89 times 1.15
Penny Nom lui répond. |
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Two equations in two unknowns |
2003-02-06 |
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Patrick pose la question :
What are all ordered pairs of real numbers (x, y) for which: yx2 - 7x + 12 = 1 and x + y = 6?
Penny Nom lui répond. |
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Transformations of pattern blocks |
2003-02-06 |
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Cheryl pose la question :
I am trying to help my 8th grade son with Transformations - use of patttern blocks. He has to trace a figure and reflect it across the x-axis, which I can do, but then it indicates include ordered pairs - that confuses me.
Penny Nom lui répond. |
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Two airplanes leave Dallas |
2003-02-06 |
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A student pose la question :
TWO AIRPLANES LEAVE DALLAS AT THE SAME TIME AND FLY IN OPPOSITE DIRECTIONS. ONE AIRPLANE TRAVELS 80 MILES PER HOUR FASTER THAN THE OTHER. AFTER THREE HOURS, THEY ARE 2940 MILES APART. WHAT IS THE RATE OF EACH AIRPLANE?
Penny Nom lui répond. |
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The sum of the first 1000 even integers |
2003-02-06 |
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Jill pose la question :
What is the sum of the first 1000 even integers?
Paul Betts lui répond. |
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Milliliters |
2003-02-04 |
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James pose la question :
What is a milliliter?
Penny Nom lui répond. |
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Factoring |
2003-02-04 |
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Marcin pose la question :
I am having a really hard time with the factor theorem. Can you please help me with the following? (a'3 means a to the exponent 3)
a)8a'3+64b'3c'6
b)8x'4-12x'3-44x'2+24x
c)x'4-21x'2-100
Penny Nom lui répond. |
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Filling in the back yard with dirt |
2003-02-04 |
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Joe pose la question :
We just bought a house and need to start filling in the back yard with dirt to level it out. I measure 37'x 56' by 2' deep on an angle. I will be building a retaining wall at the 2' deep portion. The slop will go from the 2' to nothing at the top or near the house. I can't remember how to get the Sq. foot or cubic yards.
Penny Nom lui répond. |
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A train with 2 cars |
2003-02-04 |
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Michael pose la question :
A train with 2 cars is traveling at a speed of 80 km/hr from town X to town y, located 800 km from each other. At the same moment that the train departed, a passenger started to walk back and forth from one end of car B to the other at a speed of 100cm/sec. Arriving in town Y, the passenger had already gone and returned 720 times. The length of car A is that of car B plus one fourth of the length of the locomotive, and the length of the locomotive equals the length of Car A plus one fifth of the length of car B. What is the total length of the train?
Penny Nom lui répond. |
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Problem solving |
2003-02-03 |
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Brigitte pose la question :
My daughter is having lot's of problem with problem solving she is in grade 6. she is using mathematics in action from macmillan/ mcgraw- hill. Do you know of any way she can get help, and if there is any tests on line
Diane Hanson lui répond. |
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Arithmitic sequence |
2003-02-01 |
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A student pose la question :
I am having problems solving this arithmetic sequence... 1, 5, 10, ___, 50, 1.00, ___, 10.00, ... I believe the answers to be 25 and 5.00 but I can't figure why.
Claude Tardif lui répond. |
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les formules d'aire et de volume de les solides |
2003-02-01 |
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Annie pose la question :
Je cherche le nom des mathématiciens qui ont découvert les différentes formules d'aire et de volume de tous les solides ( boule, cube, les prismes, cylindre, cône, pyramide, polyèdres réguliers). Je cherche aussi à trouver comment ils ont démontré l'exactitude de ces formules. L'important, c'est de connaître le nom des mathématiciens qui ont découvert ces formules.
Claude Tardif lui répond. |
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Combinations of 1,2,3,4,5 and 6 |
2003-02-01 |
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Kyle pose la question :
Today I was aked a question by my geometry teacher. It was, what is the sum of all the possible combinations of the numbers 1, 2, 3, 4, 5, and 6. He said all the possible combinations were 720. I would like to know how u could do this, and what the answer is.
Penny Nom lui répond. |
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1+2+3+...+500 |
2003-01-31 |
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Brian pose la question :
What is the sum of the numbers from 1 to 500 inclusive?
Paul Betts lui répond. |
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Triangle perimeter |
2003-01-30 |
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An Aunt pose la question :
Hi I'm the aunt of a middle school child. He need help with two problems and I don't understand how to show he how to do them. Can you help me. - How do you find the perimeter for X=4, X=0.7, and X=5/6?
- And an acute triangle that bottom is (3X+1) cm, left side is (X+4) cm and the right is (2X+5)cm.
Can you show me not only the answer but also the steps that you used.
Penny Nom lui répond. |
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