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Recent questions and answers in Math

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Centrifugal ultra-fine grinding machine

Centrifugal ultra-fine grinding machine (referred to as ultra-fine grinding) is my company at home and abroad advanced milling equipment developed on the basis of a new generation of ultra-fine milling equipment, has been national patent, can replace Raymond Mill, Fine powder, fineness can be adjusted between 80 mesh and 1500 mesh.
Centrifugal ultrafine mill Scope:
Mainly applicable to barite, calcite, limestone, kaolin, bentonite, marble, gypsum, refractory quartz stone, glass, ceramics and other hardness of not more than 9.3, humidity below 6% of the mineral powder processing, 80 mesh -1500 mesh between the arbitrary adjustment.
Centrifugal ultra-fine milling machine performance characteristics:
1, the noise is small, small vibration, pressure, fine powder, high yield;
2, grinding ring and roller wear evenly, long service life;
3, the equipment can be continuous operation, oiling non-stop, power consumption is small;
4, high efficiency, easy installation and maintenance;
5, the mill without blade feed, low failure rate.

asked Jun 8 in Math by anonymous
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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
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.
answered Sep 27, 2016 in Calculus by anonymous
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1 answer
Prove the following statement:

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

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

answered Oct 17, 2015 in others by w1002 (660 points)
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1 answer
answered Oct 17, 2015 in K-12 by chstw (1,320 points)
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1 answer
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1 answer
answered Oct 12, 2015 in Calculus by 32fun (6,320 points)
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1 answer
answered Oct 11, 2015 in Calculus by 32fun (6,320 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)
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asked Sep 29, 2015 in K-12 by w_reguser (1,420 points)
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