Which statement best reflects the solution(s) of the equation? 1x−1+2x=xx−1

Asphere has a diameter of 10 in. what is the volume of the sphere?

Aword processing program requires a 7- digit registration code made up of the digits 1,2,4,5,6,7 and 9 each number has to be used and no number can be used mor than once how many codes are possible

There are 8 movies that you would like to see currently showing in theatres. in how many different ways can you choose a movie to see this saturday and one to see this sunday?