Answer
$=\dfrac {7}{5}=1.4$
Work Step by Step
$1+\dfrac {2}{7}+\left( \dfrac {2}{7}\right) ^{2}+\left( \dfrac {2}{7}\right) ^{3}...=\dfrac {a_{1}}{1-r}=\dfrac {1}{1-\dfrac {2}{7}}=\dfrac {1}{\dfrac {5}{T}}=\dfrac {7}{5}=1.4$
Calculus: Early Transcendentals (2nd Edition)
by Briggs, Bill L.; Cochran, Lyle; Gillett, Bernard
Published by
Pearson
ISBN 10:
0321947347
ISBN 13:
978-0-32194-734-5
Chapter 8 - Sequences and Infinite Series - 8.3 Infinite Series - 8.3 Exercises - Page 623: 22
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