Algebra 2 (1st Edition)

Published by McDougal Littell
ISBN 10: 0618595414
ISBN 13: 978-0-61859-541-9

Chapter 13, Trigonometric Ratios and Functions - 13.3 Evaluate Trigonometric Functions of Any Angle - 13.3 Exercises - Mixed Review - Page 872: 56



Work Step by Step

$\sum_{i=1}^{\infty} 8 (\dfrac{1}{2})^{i-1}=(8) \times [\dfrac{1-0.5^{\infty}}{1-0.5}]$ $=(8) \times [\dfrac{1-0.5^{\infty}}{1-0.5}]$ $=(8) \times [\dfrac{1}{0.5}]$ $=16$
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