Answer
X∪Y={1,2,3,4,5,6,7,8,9,10}
Work Step by Step
X∪Y is the union of X and Y. The union is all the members that are in either X or Y.
Algebra 1: Common Core (15th Edition)
by Charles, Randall I.
Published by
Prentice Hall
ISBN 10:
0133281140
ISBN 13:
978-0-13328-114-9
Chapter 3 - Solving Inequalities - 3-8 Unions and Intersections of Sets - Lesson Check - Page 218: 1
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