What is 80% out of 65

Solve |x| > -9 a) {x|x< -9 or x> 9} b) all reals c) no solution

To complete your spring schedule, you must add calculus and physics. at 9: 30, there are three calculus sections and two physics sections; while at 11: 30, there are two calculus sections and three physics sections. how many ways can you complete your schedule if your only open periods are 9: 30 and 11: 30?

What is the base of 1/9 to the power of 2