Geometric Series Formula Quizmaster : MATHguide
Geometric Series Quizmaster: MATHguide
Review the Lesson | MATHguide homepage Updated June 18th, 2023


Status: Waiting for your answers.

Use the first 11 terms of the following geometric series for the problem below:

-7 + 21.7 - 67.27 + 208.537 + ...

What is the value of the common ratio? r =
What is the sum of the first 11 terms?
(to the nearest tenth)
S11 =