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Price of topsoil |
2007-02-02 |
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Tyler pose la question :
I need to convert cubic yards to square feet. I have topsoil that is $34.30 a cubic yard and I need to know what the price is in square feet. The depth is 18".
Penny Nom lui répond. |
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Derivatives |
2007-02-01 |
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Jacob pose la question :
Find the derivative of: y= pi^2+x^2+3xy+sin(y^2)
Penny Nom lui répond. |
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Fencing a field |
2007-02-01 |
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Carol pose la question :
"The area of a rectangular field is 1200m^2. Two parallel sides are fenced with aluminum at $20/m. The remaining two sides are fenced with steel at $10/m. The total cost of the fencing is $2200." What is the length of each side fenced with aluminum and steel?
Stephen La Rocque lui répond. |
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A margin of 19% |
2007-02-01 |
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Ed pose la question :
I PAY $10.95 FOR THIS PRODUCT, HOW SHOULD I PRICE IT IN ORDER TO HAVE A MARGIN OF 19% COST.
Penny Nom lui répond. |
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Rectangles and squares |
2007-01-31 |
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Shelby pose la question :
I am doing homework and I need to know why squares are rectangles but not all rectangles are squares?
Penny Nom lui répond. |
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Angle of clock hands |
2007-01-31 |
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Sophia pose la question :
How many degrees are in the aute angle formed by the hands of a clock at 2:20 p.m.?
Stephen La Rocque lui répond. |
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The perimeter and area of a right angled triangle |
2007-01-31 |
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Naveen pose la question :
I need to calculate the area of a right angled triangle. However the measurements of the 3 sides is missing. All we are told is that the perimeter of the triangle is 1000cm.
Penny Nom lui répond. |
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The volume of a cone |
2007-01-31 |
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ajay pose la question :
WHY VOLUME OF CONE IS ONE THIRD OF THE VOLUME OF CYLINDER?
Penny Nom lui répond. |
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The cube root of 8000 |
2007-01-31 |
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Jacqui pose la question :
How would you find the answer of a cube root backwards. For example: 8000 but backwards. Like, what number made that and how would you do it?
Penny Nom lui répond. |
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The substitution method |
2007-01-31 |
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Victoria pose la question :
how do i solve this problem using the substitution method?
2x-5= -14
-7x+14y= -5
Stephen La Rocque lui répond. |
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The elimination method |
2007-01-31 |
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Addrianna pose la question :
x-2y=2
3x-5y=7
Stephen La Rocque lui répond. |
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The units digit of 9^2006 + 3^2006 |
2007-01-30 |
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Ryan pose la question :
What is the units digit of the sum of 9^2006 and 3^2006
Penny Nom lui répond. |
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Water in a triangular trough |
2007-01-30 |
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Trina pose la question :
the trough is 5 feet long and its vertical cross sections are inverted isosceles triangles with base 2 feet and height 3 feet. water is draining out of the trough at a rate of 2 cubic feet per minute. at any time t, let h be the depth and v be the volume of water in the trough.
a. find the volume of water in the trough when it is full
b. what is the rate of change in h at the instant when the trough is .25 full by volume?
c. what is the rate of change in the area of the surface of the water at the instant when the trough is .25 full by volume?
Penny Nom lui répond. |
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The density of an irregular wooden block |
2007-01-30 |
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Carlos pose la question :
I'm trying to help my son but I don't really have too much knowledge about this topic. he is been asked to convert 10 milliliter to gram, I think that since 1 g = 1ml the answer will be 10 g also there is another question of how of the density of an irregular wooden block is affected if:
a) the center is hollow:
b) the block is not completely submerged when determining the volume.
Stephen La Rocque and Penny Nom lui répond. |
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Simplify 18e^2fg/32eg^2 |
2007-01-30 |
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Morgan pose la question :
how do you simplify 18e^2fg/32eg^2
Penny Nom lui répond. |
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