Answer
0.1
Work Step by Step
If we want to get the common ratio, we just have to divide any two subsequent terms:
$r=\frac{a_2}{a_1}=\frac{-0.5}{-5}=0.1$
Elementary and Intermediate Algebra: Concepts & Applications (6th Edition)
by Bittinger, Marvin L.; Ellenbogen, David J.; Johnson, Barbara L.
Published by
Pearson
ISBN 10:
0-32184-874-8
ISBN 13:
978-0-32184-874-1
Chapter 14 - Sequences, Series, and the Binomial Theorem - 14.3 Geometric Sequences and Series - 14.3 Exercise Set - Page 912: 14
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