What is the value of the expression (-8/9)*(-2/3) multiplied by (-4 1/2)

In the rectangle below ac=30 units what is de

Which of the choices shown could be used to prove that aacp=abcp ?

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.