A sphere and a cylinder have the same radius and height. The volume of the cylinder is 21m. what is the volume of the sphere.

What is the shape of the height and weight distribution

Aparticular telephone number is used to receive both voice calls and fax messages. suppose that 25% of the incoming calls involve fax messages, and consider a sample of 25 incoming calls. (a) what is the expected number of calls among the 25 that involve a fax message?

1) prove that 731^3−631^3 is divisible by 100 2) prove that 99^3−74^3 is divisible by 25