Intermediate Algebra for College Students (7th Edition)

Published by Pearson
ISBN 10: 0-13417-894-7
ISBN 13: 978-0-13417-894-3

Chapter 11 - Section 11.3 - Geometric Sequences and Series - Concept and Vocabulary Check: 3

Answer

$\dfrac{a_1(1-r^n)}{1-r}$; $\underline{\text{first term}}$; $\underline{\text{common ratio}}$

Work Step by Step

RECALL: The sum of the first $n$ terms, $S_n$, of a geometric sequence can be found using the formula $S_n=\dfrac{a_1(1-r^n)}{1-r}$ where r = common ratio $a_1$ = first term Thus, the missing expressions in the given statements are $\dfrac{a_1(1-r^n)}{1-r}$, $\underline{\text{first term}}$, and $\underline{\text{common ratio}}$, respectively.
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