Answer
$17$
Work Step by Step
Use the formula $a_n=a_1+(n-1)d$, we have $a_5=a_1+(5-1)5=12$, thus $a_1=-8$ and $a_6=-8+(6-1)5=17$. Or simply $a_6=a_5+d=17$
Precalculus: Concepts Through Functions, A Unit Circle Approach to Trigonometry (3rd Edition)
by Sullivan III, Michael
Published by
Pearson
ISBN 10:
0-32193-104-1
ISBN 13:
978-0-32193-104-7
Chapter 11 - Sequences; Induction; the Binomial Theorem - Section 11.2 Arithmetic Sequences - 11.2 Assess Your Understanding - Page 834: 3
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