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Surface area |
2008-05-01 |
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From John:
I am working with concrete and need some assistance please. I am trying to figure out what the surface space is for a one cubic foot that is four inches thick?
Answered by Penny Nom. |
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sin105degree + sin15degree |
2008-05-01 |
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From meisje:
sin105degree + sin15degree
Can you show me the steps and how to find the exact value?
Answered by Stephen La Rocque. |
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How do you reduce an equation with multiple variables? |
2008-04-30 |
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From Jonathon:
How do you reduce an equation with multiple variables?
For example, if 3x + y = k(x-3), what would x be equal to?
Answered by Penny Nom. |
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Arithmetic and powers |
2008-04-30 |
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From mom:
my son and i are trying to do this problem but cant can you help please
-4(-2)power of 3 -3(-4) power of 2 i hope you can help thank mom
Answered by Penny Nom. |
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The standard form of an ellipse |
2008-04-30 |
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From Rebecca:
I have to write the following equation into standard form of an ellipse:
9(X-1)^2 + (Y+1)^2 = 1
Answered by Stephen La Rocque and Harley Weston. |
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(9x^2-4)/(3x^2-5x+2) * (9x^4 - 6x^3 +4x^2)/(27x^4+8x) |
2008-04-29 |
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From Jonathon:
I don't remember how to solve an equation in the form of the following:
(9x^2-4)/(3x^2-5x+2) * (9x^4 - 6x^3 +4x^2)/(27x^4+8x) =
Answered by Stephen La Rocque. |
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Fencing a triangular field |
2008-04-29 |
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From Julieta:
The area of a field shaped like a triangle is 750yards squared. One leg of the field is fenced with wood costing $5/yd. The remainder of the perimeter of the field is fenced with steel costing $10/yd. The perimeter of the field is 150yards. the total cost of the fencing is $1200.
a. What is the length of the leg fenced with wood?
b. what is the length of the leg fenced with steel?
Answered by Penny Nom. |
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The ratio of their perimeters to two regular hexagons |
2008-04-29 |
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From td:
Two regular hexagons have areas of 54 square root of 3 and 150 square root of 3, what is the ratio of their perimeters?
Answered by Stephen La Rocque. |
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Factor and solve s1^2 - 10s1 - 200 = 0 |
2008-04-29 |
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From KIM:
please factor and solve s1^2 - 10s1 - 200 = 0
Answered by Stephen La Rocque and Penny Nom. |
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Adding rational functions |
2008-04-29 |
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From Jonathon:
1/(x+3) + 1/(x^2+5x+6) =
Answered by Penny Nom. |
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The Pythagorean theorem with triangles rather than squares |
2008-04-29 |
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From Zachary:
I need to figure out how to prove the pythagorean theoorem using equilateral triangles
instead of using square. I know that A^2+B^2=C^2, but how do you get that by using equilateral
triangles. I know the area of a triangle is BH1/2=Area. So what i need to know is how to derieve the
formula of a triangle to get the pythagorean theorem
Answered by Penny Nom. |
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5 miles per hour for 30 minutes |
2008-04-29 |
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From Joshua:
A boat travels at a constant rate of 5 miles per hour for 30 minutes. How far does the boat go in that time?
Answered by Penny Nom. |
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Converting metric density |
2008-04-28 |
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From Hilary:
10g/100ml=?g/?l
52g/100ml=?g/?l
65g/100ml=?g/?l
100g/100ml=?g/?l
137g/100ml=?g/?l
0.15g/100ml=?g/?l
Answered by Penny Nom. |
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A bowl is the shape of a hemisphere |
2008-04-28 |
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From josh:
a bowl is the shape of a hemisphere with diameter 30 cm and water is poured into the bowl to a height h cm. how do i find the volume of the water in the bowl
Answered by Harley Weston. |
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The diameter of a circle |
2008-04-28 |
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From Mary:
What is the diameter of a circle if the area is 132.7 square meters? I have tried the formula C=2 times pi radius and came up up 21.1. I also tried C = pi times d and came up with 42.26. The answer in the book says 13. How did they get this answer? Thank you for your help.
Answered by Penny Nom. |
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