Geometry: Common Core (15th Edition)

Published by Prentice Hall
ISBN 10: 0133281159
ISBN 13: 978-0-13328-115-6

Chapter 1 - Tools of Geometry - 1-3 Measuring Segments - Practice and Problem-Solving Exercises - Page 24: 20



Work Step by Step

Because of the tick marks, we know that PT=TQ. So, we can set their algebraic values equal to each other. That gives $PT=TQ \rightarrow 5x+3=7x-9 \rightarrow -2x=-12 \rightarrow x=6$ The question asks for PT, so we substitute 6 back into the equation of PT, which is $5x+3$. $5(6)+3=30+3= \fbox{33}$.
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