Show how to use elimination matrices to solve the following system of equations. Please give your final solution as either a point, no solution, or a set of solutions: x - y - 2z = -1
-2x+2y+4z = 2
-2x+3y+z = 7

Diana is painting statues she has 7/8 of a liter of paint each statue requires 1/20 of a liter of paint how many statues can she paint?

Which of the expressions (on the photo document i inserted) together represent all solutions to the following equation? 8cos(12x)+4=-4 *the answer should be in degrees.* > i would like for someone to explain the process to find the solutions for this.

What is the image of c for a 90° counterclockwise rotation about a? (3, 7) (-1, 3) (7, 3)