Why do you subtract exponents when dividing powers with the same base?

Describe the relationship between the angles of similar triangles and the sides of similar triangles

Abird on top of a 200 ft bridge tower sees a man standing on the lower part of the bridge (which is 50 ft above the ground). the angle of depression from the bird is 26 ̊. how far is the man from the base of the bridge tower? with explanation and pictures .

What’s 8y+48 and factor each expression completely