How many line segments are in the 20th figure?

Which number produces a rationale number when multiplied by 1/5

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 .

Credit card a offers an introductory apr of 3.4% for the first three months and standard apr of 15.7% thereafter,