Over a five-hour period, the temperature decreased by 20 °F. Which expression would give the average change in degrees Fahrenheit per hour over this period?
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The temperature drops 20 degrees in 5 hours. To find out how much the temperature drops per hour, simply divide the total temperature change by the number of hours.
Hence:
-20 degrees / 5 hours = -4 degrees per hour
Another way to think about this is algebraically. We can set up the problem this way.
-20 degrees = 5 hours * x, where x is the change in temperature per hour. Solving for x leads to the equation above.
Answered by
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Answer:
The temperature drops 20 degrees in 5 hours. To find out how much the temperature drops per hour, simply divide the total temperature change by the number of hours.
Hence:
-20 degrees / 5 hours = -4 degrees per hour
Another way to think about this is algebraically. We can set up the problem this way.
- -20 degrees = 5 hours * x, where x is the change in temperature per hour. Solving for x leads to the equation above.
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