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30-03-2020
Mathematics

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At 9:00 AM, the temperature started dropping 2°C per hour until it reached –13°C at 1:00 PM. What was the temperature at 9:00 AM?

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musiclover10045 musiclover10045

30-03-2020

9:00 am to 1:00 pm is 4 hours.

The temperature dropped 2 degrees every hour so 2 x 4 = 8 total degrees.

Add 8 degrees to the final temperature to find the starting temperature.

-13 + 8 = -5 degrees at 9:00 am.

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