Basic College Mathematics (10th Edition)

Published by Pearson
ISBN 10:
ISBN 13:

Chapters 1-9 - Cumulative Review Exercises - Page 704: 28

Answer

The width of the photograph is $18$ cm long and the length of the photograph is $23$ cm long.
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Work Step by Step

1. Find the width by solving for $x$ Let $x =$ the width of the photograph $2(x) + 2(x+5) = 82$ $2x + 2x + 10 = 82$ $4x + 10 = 82$ $4x = 72$ $x = 18$ cm Therefore the width of the photograph is $18$ cm long. 2. Find the length of the photograph by substituting the $x$ value $= x + 5$ $= 18 + 5$ $= 23$ cm Therefore the length is $23$ cm long.
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