Thinking Mathematically (6th Edition)

Published by Pearson
ISBN 10: 0321867327
ISBN 13: 978-0-32186-732-2

Chapter 9 - Measurement - 9.3 Measuring Weight and Temperature - Exercise Set 9.3: 77

Answer

$a. 10^{\circ}~C$

Work Step by Step

In the Sahara Desert, the daytime temperature can reach over $40^{\circ}~C$. Clearly $50^{\circ}~C$ and $70^{\circ}~C$ are too hot for a warm winter day in Washington, D.C. Also, $30^{\circ}~C$ could be the temperature of a hot summer day, so this temperature is also too hot. A temperature of $10^{\circ}~C$ is not hot, but it is above the freezing point of water, so this seems like a reasonable estimate for the temperature on a warm winter day in Washington, D.C. The best estimate for the temperature on a warm winter day in Washington, D.C. is $10^{\circ}~C$.
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