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Recent questions in Math

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Which city has the median population value?
City Population in Millions Melbourne 3.2 Bangkok 7.2 Nairobi Paris 9.6 São Paulo 17.7 Tokyo 28.0 Seattle 2.1
asked Oct 2, 2016 in K-12 by anonymous
0 votes
1 answer
Prove the following statement:

V \subseteq W \Leftrightarrow P(V) \subseteq P(W)

Where P(X) is the power set of X.

asked Oct 16, 2015 in others by chstw (1,320 points)
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1 answer
asked Oct 15, 2015 in Number Theory by chstw (1,320 points)
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The area of an equilateral triangle is increasing at the rate of 5 m^2/hr.

 Find the rate at which the height is changing when the area is

 \frac{64}{\sqrt3} m^2
 

asked Oct 9, 2015 in Calculus by w1002 (660 points)
0 votes
1 answer
Suppose Aaron is pumping water into a tank (in the shape of an inverted right circular cone) at a rate of 1600 ft^3/min.
If the altitude is 10 ft and the radius of the base is 5 ft, find the rate at which the radius is changing when the height of the water is 7 ft.
asked Oct 9, 2015 in Calculus by w1002 (660 points)
0 votes
1 answer
asked Oct 9, 2015 in Calculus by w1002 (660 points)
0 votes
1 answer
asked Oct 9, 2015 in Calculus by w1002 (660 points)
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0 answers
0 votes
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0 votes
0 answers
asked Sep 29, 2015 in K-12 by w_reguser (1,420 points)
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1 answer
asked Sep 29, 2015 in K-12 by w_reguser (1,420 points)
0 votes
1 answer
How many irrational numbers are there between 1 and 6 ?

How many irrational numbers are there between 1 and 6 ?

asked Sep 22, 2015 in K-12 by spike (980 points)
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0 answers
Sales for a business were 3 million dollars more the second year than the first, and sales for the third year were double the sales for the second year.

Sales for a business were 3 million dollars more the second year than the first, and sales for the third year were double the sales for the second year. If sales for the third year were 38 million dollars, what were sales, in millions of dollars, for the first year?

asked Sep 22, 2015 in K-12 by spike (980 points)
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