### Home > CALC > Chapter 9 > Lesson 9.1.2 > Problem 9-32

9-32.

An

**alternating series**, such as 100 − 80 + 64 − 51.2 + ..., has terms that alternate in sign (+ and −). Homework Help ✎Find the common ratio for 100 − 80 + 64 − 51.2 + ...

Find the sum of this infinite series.