Question

Suppose you mark n points on a circle, where n is a whole number greater than 1. The number of segments you can draw that connect these points is 1/2n^2 - 1/2n How many segments can you draw if you mark 8 points on the circle? A. 56 segments B. 32 segments C. 60 segments D. 28 segments

Answer 1

just subsitute 8 for n
1/2(8)^2-1/2(8)
1/2(64)-4
32-4
28
D