An angle measures 53 degrees, what are the measures of the angles compliment and supplement

Which value of c would make he following expression completely factored? 8x+cy

Aman is 6 feet 3 inches tall. the top of his shadow touches a fire hydrant that is 13 feet 6 inches away. what is the angle of elevation from the base of the fire hydrant to the top of the man's head?

Acircle has a circumference of 28.36 units what is the diameter of the circle