## Algebra 1

Published by Prentice Hall

# Chapter 1 - Foundations for Algebra - 1-3 Real Numbers and the Number Line - Practice and Problem-Solving Exercises - Page 20: 18

#### Answer

$0.5$

#### Work Step by Step

According to the textbook, a number, $a$, is a square root of another number, $b$, if $a^2=b$. $(0.5)^2=0.25$, so $0.5$ is a square root of $0.25$. Therefore: $\sqrt {0.25}=0.5$

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