Geometry: Common Core (15th Edition)

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

Chapter 1 - Tools of Geometry - Chapter Test: 9

Answer

x=10

Work Step by Step

The lengths of $\overline{JH}$ and $\overline{HK}$ sum to the length of $\overline{JK}$ Segment Addition Postulate $(4x-15)+(2x+3)=48$ combine like terms $6x-12=48$ add 12 to each side $6x-12+12=48+12$ $6x=60$ divide each side by 6 $6x\div6=60\div6$ $x=10$
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