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Cubic yards of sand |
2006-05-26 |
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From Steve:
I need to cover an area with sand that is 30 feet wide and 60 feet long and I need the depth of the sand to be 1/4 inch thick. How many cubic yards of sand will I need?
Answered by Penny Nom. |
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Simultaneous Equations |
2006-05-24 |
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From Angie:
Question: solve the equations
2x-3y-z=0
3x-2y+z=-5
x+3y-2z=14
for x,y,z
Answered by Stephen La Rocque. |
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The sides of a hexagon |
2006-05-24 |
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From Emilio:
I need to find the measure of the sides of the hexagon that the area is 58 square units.
Answered by Stephen La Rocque. |
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differentiate the volume of a cylinder with V respect to h |
2006-05-24 |
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From A student:
differentiate the volume of a cylinder with V respect to h
Answered by Stephen La Rocque. |
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The area of a 30, 60 90 triangle |
2006-05-24 |
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From Willetta:
if there is a triangle with a 30, 60, and 90 degree angle and the shortest side is 6cm how do you find the area?
Answered by Stephen La Rocque and Penny Nom. |
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The nth term of a sequence |
2006-05-24 |
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From A student:
please could you give me a formula for the following numbers for my teacher
3 8 15 24 35
Answered by Chris Fisher. |
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How do you graph 3x + 6y = -9 by axis intercepts? |
2006-05-22 |
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From Crystal:
How do you graph 3x + 6y = -9 by axis intercepts?
Answered by Penny Nom. |
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Three purses |
2006-05-22 |
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From Marcee:
If you take $20 from the first and put it into the second of three purses, the second would then contain 4 times as much as remains in the first. If $60 of what is now in the second is put into the third, the third will contain twice what is in the first and second together. Now, if $40 be removed from the third and put into the first, there will be half as much as in the third. What did each purse originally hold?
Answered by Penny Nom. |
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The volume of a cylinder |
2006-05-22 |
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From A student:
Show that a volume of a cylinder equals to v = A2 / (4πh)
where h= height of the cylinder
A = area of a original paper
Answered by Penny Nom. |
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A concrete driveway |
2006-05-21 |
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From Diane:
I am trying to estimate how many cubic yards of concrete I will need to pave my driveway. I have an area that is 30 ft wide by 25 ft long and then goes into an area that is 10 ft wide by 219 foot long. I would like to make this 4 inches thick. How many cubic yards of concrete will it take to do this?
Answered by Penny Nom. |
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The area of a triangle |
2006-05-21 |
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From A student:
how do you find the area of a triangle?
Answered by Penny Nom. |
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The y intercept |
2006-05-20 |
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From Zeel:
how do you solve for the y intercept when the equation is y=-1.5x?
Answered by Leeanne Boehm. |
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The interior angles of a right triangle |
2006-05-20 |
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From Greg:
I am wondering if there is a way to figure out the interior angles of a right triangle if we know ONLY the side lengths, and the trick is, we CANNOT use arctangent!
Answered by Leeanne Boehm and Penny Nom. |
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The coefficient of variation |
2006-05-20 |
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From Glenn:
What is the correct formula for coefficient of variation for a binomial distribution?
Answered by Penny Nom. |
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Square feet and acres |
2006-05-19 |
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From Lisa:
1.12 acre= ???? sq ft
1.043 acre= ???? sq ft
I work in the loan department and I do appraisal reviews but I use square feet to determine my values.
Answered by Penny Nom. |
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