Answer
x = 30
Work Step by Step
The quadrilateral is a rectangle, so the diagonals are = and bisect each other. Therefore,
SW = RT = 2RZ
5x - 20 = 2(2x + 5)
5x - 20 = 4x + 10
5x - 4x = 10 + 20
x = 30
Geometry: Common Core (15th Edition)
by Charles, Randall I.
Published by
Prentice Hall
ISBN 10:
0133281159
ISBN 13:
978-0-13328-115-6
Chapter 6 - Polygons and Quadrilaterals - 6-4 Properties of Rhombuses, Rectangles, and Squares - Practice and Problem-Solving Exercises - Page 381: 42
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