What is the area of a sector with a central angle of 160 degrees and a diameter of 5.8 m?

What kind of bond pays interest which is exempt from tax?

Which shows the correct solution of the equation 1/2a+2/3b=50, when b=30?

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.