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Travka [436]
3 years ago
6

In a school experiment the temperature of a substance is changed from 42 degrees F to -54 degrees F at an average rate of 12 deg

rees per hour. Over how many hours does the change take place?
Mathematics
1 answer:
mixas84 [53]3 years ago
5 0

Answer: 8 Hours


(42--54)/12=8

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