Classify the polygon and tell if it's either convex or concave

Let x have probability generating function gx (s) and let un generating function u(s) of the sequence uo, u1, satisfies p(x > n). show that the (1- s)u(s) = 1 - gx(s), whenever the series defining these generating functions converge.

Acircle has a radius of 5 in. a central angle that measures 150° cuts off an arc. explain how to find the arc length exactly, and then approximate it to one decimal place.

Which are the possible side lengths of a triangle? te 3 cm, 5 cm, 9 cm o4 cm, 8 cm, 10 cm 6 cm, 9 cm, 17 cm 8 cm, 10 cm, 18 cm te