kamrynn kamrynn

06-10-2016
Mathematics

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one cold night the temperature was 0 degrees at 8 p.m. The temperature dropped at a constant rate from 8 p.m. to midnight. the temperature was —16.8 degrees. what was the temperature at 9 p.m.?

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texaschic101 texaschic101

06-10-2016

8 pm to midnight (12 pm) = 4 hrs
so the temp dropped -16.8 in 4 hrs (because the temp started at 0)

-16.8/4 = -4.2....so it dropped 4.2 every hr.

temp at 9 pm (1 hr after 8) would be (0 - 4.2) = -4.2

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