Algebra 2 Common Core

Published by Prentice Hall
ISBN 10: 0133186024
ISBN 13: 978-0-13318-602-4

Skills Handbook - Ratios and Proportions - Exercises: 6

Answer

4

Work Step by Step

The proportion is set up as a/5=12/15. To find "a", we must look at the denominators. We had to divide 15 by 3 to get to 5, so we have to divide 12 by 3 to get "a" which is 4.
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