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The derivative of y = sin (30º + x) |
2012-11-07 |
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From Saskia:
derivative of y = sin (30º + x)
Answered by Harley Weston. |
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Joe and Chris each bought a six pack of cola |
2012-11-01 |
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From Loulou:
Joe and Chris each bought a six pack of cola. Joe gave 2/3 of his away and Chris gave half as many as Joe. how many more colas did Chris have than Joe
Answered by Penny Nom. |
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Filling a box with wood chips |
2012-10-31 |
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From lee-Anne:
Each bag of wood chippings will fill 4m3 how bags would be needed?
Volume of box is 572 cm3
L=11CM
W= 6.5CM
H=8CM
Answered by Penny Nom. |
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4+4x5+4= ? |
2012-10-31 |
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From Bob:
4+4x5+4= ?
Answered by Harley Weston. |
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Frosting a three layer cake |
2012-10-30 |
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From johnathan:
Each layer of a 3 layer cake is a cylinder with height 7.5 cm. The bottom layer has diamegter 25 cm. The middle layer has dimegter 22.5 cm. The top layer has diameter 20 cm. The surface of the cke is frosted. What area of the cake is frosted. I get 1695.56 but the answer in the book is 2081.3
Answered by Penny Nom. |
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My compass was off by 8 degrees |
2012-10-30 |
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From Oscar:
If I walked 620' and my compass was off by 8 degrees how many feet from my heading was I?
Thank You
Answered by Penny Nom. |
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The sum of a number p and twenty-one |
2012-10-30 |
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From mayra:
the sum of a number p and twenty-one
Answered by Penny Nom. |
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Introductory algebra |
2012-10-30 |
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From kevon:
if x = 7 is used in the expression 2x + 5 what is the output
Answered by Penny Nom. |
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A bipartite graph |
2012-10-29 |
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From A student:
Suppose that G be a bipartite graph with maximum degree of k.
Prove that:
1)Exists a K-regular bipartite graph that G be subgraph it(H)
Answered by Claude Tardif. |
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birdhouse in the shape of a rectangular prism |
2012-10-29 |
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From Tiffany:
Hello, I am Tiff M. from NYC.
I was solving a math problem about adding,subtracting,multiplying
or dividing fractions and mixed numbers. I am not getting this
question below.
* Laura is building a birdhouse in the shape of a rectangular prism.
The base of the birdhouse has an area of 5 square inches. The
height of the birdhouse is 2 7/12 inches. Laura calculated the
volume of the bird house to be 10 7/12in. Is she correct?
If not, what did she do wrong?
Answered by Robert Dawson. |
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Forming an algebraic expression |
2012-10-27 |
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From ashley:
A sidewalk has a constant width W and comprises several short sections having lengths
12, 14,and 10 feet. How do I find the simplified expression that gives the number of square feet of sidewalk?
Answered by Penny Nom. |
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Square root |
2012-10-27 |
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From Ashley:
what does square root means
Answered by Penny Nom. |
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An implicit differentiation problem |
2012-10-26 |
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From Katie:
find y' of x^2y-2y^3=3x+2y
Answered by Harley Weston. |
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Some 4 digit numbers |
2012-10-25 |
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From samira:
How many 4-digit numbers are there in which the first and last digits are the same?
Answered by Penny Nom. |
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How fast is the distance between the aircraft and the car increasing? |
2012-10-24 |
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From Steven:
At a certain instant an aircraft flying due east at 240 miles per hour passes directly over a car traveling due southeast at 60 miles per hour on a straight, level road. If the aircraft is flying at an altitude of .5mile, how fast is the distance between the aircraft and the car increasing 36 seconds after the aircraft passes directly over the car?
Answered by Penny Nom. |
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