Elementary Geometry for College Students (5th Edition)

Published by Brooks Cole
ISBN 10: 1439047901
ISBN 13: 978-1-43904-790-3

Chapter 5 - Section 5.1 - Ratios, Rates, and Proportions - Exercises - Page 226: 9a

Answer

$x = 2\sqrt 7$ or $-2\sqrt 7$

Work Step by Step

$\frac{x}{4} = \frac{7}{x}$ $x^{2} = 28$ $x = \sqrt {28}$ or $-\sqrt {28}$ $x = 2\sqrt 7$ or $-2\sqrt 7$
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