Andy has two similar conical hats, hat a and hat b. the diameter of hat a is 18 inches, and the diameter of hat b is 9 inches.

what is the ratio of the volume of hat a to the volume of hat b?

2: 1
16: 1
4: 1
8: 1

is it 4: 1? or 8: 1? or something else?

Can someone pls ! pls answer all. no explanation needed..

Which expression is equivalent to -5(3x - 6/7)

Asystem of linear equations contains two equations with the same slope. select all of the correct statements. i a. the system may have two solutions. - b. the system may have infinitely many solutions. c. the system may have one solution. o d. the system may have no solution. submit