Elementary Geometry for College Students (5th Edition)

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

Appendix A - A.1 - Algebraic Expressions - Exercises - Page 544: 31

Answer

$= 10x$

Work Step by Step

Let $s =$ sum of the angles of the triangle $s = 3x + 5x + 2x$ $s = 8x + 2x$ $s = 10x$
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