Asphere has a radius of 6 meters. a second sphere has a radius of 3 meters. what is the difference of the volumes of the spheres? without solving for pi

The total number of dental clinics total for the last 12 months was recorded

What does independent variable and dependent variable mean in math?

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?