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klio [65]
3 years ago
9

A rock climber's elevation above sea level changed −82 1/2 feet in 2 1/4 minutes as she descended.

Mathematics
2 answers:
boyakko [2]3 years ago
8 0

Answer:

-36\frac{2}{3}ft/min

Step-by-step explanation:

The elevation changed -82\frac{1}{2} ft in 2\frac{1}{4} min. To find the ratio of change of such elevation, we just have to divide these quantities. However, we need to transform each mixed number into a fraction, as follows

-82\frac{1}{2} ft=-\frac{165}{2} ft\\2\frac{1}{4} min=\frac{9}{4}min

Then, we divide

-\frac{165}{2}ft \div \frac{9}{4} min=-\frac{165}{2}ft\times \frac{4}{9}\frac{1}{min}=-\frac{660}{18}ft/min=-36\frac{12}{18} =-36\frac{2}{3}ft/min

Therefore, the ratio of change expressed as a mixed number is

-36\frac{2}{3}ft/min

alekssr [168]3 years ago
4 0
W<span>hat was the climber's average change in elevation per minute?
</span><span>-36⅔


</span>
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