Algebra: A Combined Approach (4th Edition)

Published by Pearson
ISBN 10: 0321726391
ISBN 13: 978-0-32172-639-1

Chapter 9 - Section 9.1 - Solving Systems of Linear Equations in Three Variables and Problem Solving - Exercise Set - Page 639: 31

Answer

a) 1101 feet for Enterprise class, 1092 feet for Nimitz class b) 3.67 football fields

Work Step by Step

a) Enterprise = $e$ Nimitz = $n$ $e+n=2193$ $e-n=9$ $e+n+(e-n)=2193+(9)$ $e+n+e-n=2202$ $2e=2202$ $2e/2=2202/2$ $e=1101$ $e-n=9$ $1101-n=9$ $1101-9-n+n=9-9+n$ $1092 = n$ b) 3 feet to a yard $1101/3=367$ yards $1092/3=364$ yards
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