Algebra 1

Published by Prentice Hall
ISBN 10: 0133500403
ISBN 13: 978-0-13350-040-0

Chapter 3 - Solving Inequalities - 3-8 Unions and Intersections of Sets - Practice and Problem-Solving Exercises: 36

Answer

$M\cap N=\{x\ |\ x$ is a multiple of 15$\}$

Work Step by Step

The intersection of 2 sets contains the elements that are members of both sets. From the rules of prime factorization, we know that numbers that are a multiple of 3 and are a multiple of 5 are also a multiple of $3\times 5$, or 15.
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