The rational number -17 is equal to what fraction?

Which formula gives the area of a triangle? a=1/2(b+h)

What are the solutions of the system? solve by graphing. y = -x^2 - 3x + 2 y = -2x + 2

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.