HELP ASAPP PLEASEE A sphere has a diameter of 18 inches. What is the volume of the sphere? Use 3.14 for pi.

a
3,052.08 in.^3
b
2,289.06 in.^3
c
9,156.24 in.^3
d
24,416.64 in.^3

Find the solution of this system of equation -7x+y=-20 9x-3y=36

Monitors manufactured by tsi electronics have life spans that have a normal distribution with a standard deviation of 1800 hours and a mean life span of 20,000 hours. if a monitor is selected at random, find the probability that the life span of the monitor will be more than 17,659 hours. round your answer to four decimal places.

If the car had not hit the fence, how much farther would it have skidded? solve the skid-distance formula to find the extra distance that the car would have traveled if it had not hit the fence. round your answer to two decimal places. note that unit conversion is built into the skid distance formula, so no unit conversions are needed.