Let r be a commutative ring with unit. suppose r contains an idempotent element a other than 0 or 1. (that is, a 2 = a.) show that every prime ideal in r contains an idempotent other than 0 or 1

Given a(-12,5) and b(12,29) find the point that divides the line segment ab three-eighths of the way from a to b

Tamera puts 15/4 gallons of gasoline in her car. which mixed number represents the gallons of gasoline? a) 2 3/4 gallons b) 3 1/4 gallons c) 3 3/4 gallons d) 4 1/2 gallons answer it's worth a lot of points!

For the following geometric sequence, find the recursive formula. {-80, 20, -5, } i need : ')