Algebra 1: Common Core (15th Edition)

Published by Prentice Hall
ISBN 10: 0133281140
ISBN 13: 978-0-13328-114-9

Chapter 1 - Foundations for Algebra - Concept Byte: 12

Answer

Irrational number

Work Step by Step

When multiplied, -4/9 times $ -\sqrt {5} $ is $ 4 \sqrt{5}/9$. This cannot be rewritten as a fraction where only integers are in the numerator and the denominator, so it is irrational.
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