Answer
$22.222^oC.$
Work Step by Step
To change from degrees Fahrenheit to degrees Celsius, we use the formula
$$C=\frac{5}{9}(F-32^o)=\frac{5}{9}(72^o-32^o)=\frac{5}{9}\times (40^o)=22.222^o$$
that is, $72^oF=22.222^oC.$
Elementary Technical Mathematics
by Nelson, Robert; Eren, Dale;
Published by
Brooks Cole
ISBN 10:
1285199197
ISBN 13:
978-1-28519-919-1
Chapter 3 - Review - Page 157: 24
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