Arianna is standing on the top of a 60-foot building and spots her friend, Rita, across the street. Arianna's eye height is 5 feet. If Rita is 37 feet away from the building,
what is the angle of depression from Arianna to Rita? Round your answer to the
nearest degree

step-by-step explanation:

the ratio of red paint to blue paint is always 9/7. that means that, whatever x's value, (4x+12)/(4x-4) has that same ratio. so, set up an equation and cross-multiply to solve for x:

9/7 = (4x+12)/(4x-4)

9(4x-4) = 7(4x+12)

36x - 36 = 28x + 84

8x - 36 = 84

8x = 120

x = 15