Big Ideas Math - Algebra 1, A Common Core Curriculum

Published by Big Ideas Learning LLC
ISBN 10: 978-1-60840-838-2
ISBN 13: 978-1-60840-838-2

Chapter 1 - Solving Linear Equations - 1.1 - Solving Simple Equations - Exercises - Page 9: 42

Answer

$25$

Work Step by Step

Temperature at 5 pm: $20$ degrees. Temperature at 10 pm: $-5$ degrees. Let $t =$ temperature change $20 - t = -5$ Simplify. Add 5 to both sides of the equation. $25 - t = 0$ Add $t$ to both sides of the equation. $25 = t$
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