Mathematics, 01.07.2019 08:40 unkown77

On the coldest night in north ice, greenland, the temperature dropped from 0°c to −21°c in 7 hours. what is the average temperature change per hour? enter your answer in the box.

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On the coldest night in north ice, greenland, the temperature dropped from 0°c to −21°c in 7 hours....

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