Geometric Series Formula Quizmaster : MATHguide
Geometric Series Quizmaster: MATHguide
Review the Lesson | MATHguide homepage Updated March 7th, 2019


Status: Waiting for your answers.

Use the first 13 terms of the following geometric series for the problem below:

-12 + 54 - 243 + 1093.5 + ...

What is the value of the common ratio? r =
What is the sum of the first 13 terms?
(to the nearest tenth)
S13 =