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Profit margin |
2006-11-04 |
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From Beverly:
Our costs to make a product is $73.00. We want to sell this product and make a 30 percent profit margin. What is the selling price? What is the simple formula to follow? Is there a chart we can go to that shows us these percentage of profit breakdowns
Answered by Penny Nom. |
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Newton meters and ft-lbs |
2006-11-04 |
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From Michael:
What is the correlation between Newton meters and ft-lbs of torque? If an engine has 100ft-lbs of torque,what would that equate to in Newton meters?
Answered by Stephen La Rocque. |
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Going from one town to another |
2006-11-04 |
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From Austin:
Going from one town to another,a man drives his car at 35 miles an hour and returning he drives at 25 miles an hour. the round trip takes 6 hours. Find the distance between the towns.
Answered by Stephen La Rocque. |
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4/7x+3=15 |
2006-11-04 |
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From Ashley:
Solve 4/7x+3=15
Answered by Penny Nom. |
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tan1/2x + cot1/2x = 2cscx |
2006-11-04 |
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From Jazmin:
Prove tan1/2x + cot1/2x = 2cscx
Answered by Penny Nom. |
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ESL and math-speak |
2006-11-03 |
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From Matt:
My name is Matt and I am an ESL teacher in Korea. Recently I have begun tutoring a student who will be going to Canada soon as a 9th grade student. She is a very capable student and is concerned that her mathematical abilities outstrip her ability to communicate in English. I am writing mainly to inquire what level of math-speak I should teach to this student. For instance: should I be explaining geometric terms, or simply algebra? And if algebra, should I include complex numbers and the quadratic formula? If there are things that she will be taught in Canada, I'd prefer her to learn them firsthand from a math teacher. However, knowledge that she will be presumed to have I would like to teach.
Answered by Karen McIver. |
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The semester grade |
2006-11-03 |
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From Caroline:
Can you tell me how to calculate a grade based on a percentage formula where 15 assignments account for 40% of the grade and 3 tests account for 60% of the semester grade.
Answered by Penny Nom. |
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The sum of two numbers is 30 |
2006-11-03 |
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From GG:
The sum of two numbers is 30 and the product of the same two numbers is 221. Find the two numbers.
Answered by Stephen La Rocque. |
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y = |x| - 10 |
2006-11-03 |
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From Pam:
what is the process for finding the vertex point for an equation such as this, y= |x| - 10.
Answered by Penny Nom. |
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Where did the extra unit come from? |
2006-11-03 |
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From Daniel:
There are two triangles each with a base of 8, a height of 3 and an area of 12 units squared and two trapezoids, each with a one parallel side that is 3 and one that is 5 and a height of making it have an area of 20 units squared. When arranged in a 8x8 square then the total area is 64 units squared, but when arranged in a 5x13 rectangle the total area is 65 units squared, where did the extra unit come from?
Answered by Haley Ess. |
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3x+4y+7x+9+2 |
2006-11-03 |
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From Chavon:
3x+4y+7x+9+2 I don't get it please help
Answered by Stephen La Rocque. |
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Kilowatts and Horsepower |
2006-11-03 |
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From Michael:
How many Kilowatts=1 Horsepower or Horsepower=1 Kilowatt?
Answered by Stephen La Rocque. |
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A dinner group of 16 couples |
2006-11-02 |
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From Nancy:
This is a real-world problem. I should know the answer but I don't. A friend is starting a dinner group of 16 couples, to be distributed across 4 houses. Each month she wants to have a different set of host houses (no problem) AND she doesn't want repeats among pairs. That is, if the Smiths and Joneses are together one month, they should not be together another month until all the combinations have been exhausted. How many valid combinations are there? Is there a formula that I can convert into a computer program? I will have to get the names from my friend and give her back the combinations as she would not be able to deal with the math formulation.
Answered by Denis Hanson. |
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What's 3x squared? |
2006-11-02 |
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From Cath:
What's 3x squared?
Answered by Penny Nom. |
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Les cinq ligner de chiffre |
2006-11-02 |
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From Alex:
comment faire pour trouver les cinq ligner de chiffre apres les avoir observer les sept premiere 1
11
21
1112
3112
211213
312213
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Answered by Claude Tardif. |
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