The mean temperature for the first 4 days in January was 9°C the mean temperature for the first 5 days in January was 7°C. what was the temperature on the 5th day?

Question

Mathematics

Piper Galvan

19 May, 14:26

The mean temperature for the first 4 days in January was 9°C the mean temperature for the first 5 days in January was 7°C. what was the temperature on the 5th day?

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America Sloan · Answer 1

Ok to make this easy, do 4 days as 9°C. So 9+9+9+9=36 / 4 = 9. So that's the first 4 days. Then the 5th day, the mean dropped to 7°C so that means the temperature dropped. - 1 is your answer and you can check this by doing 9+9+9+9 + (-1) = 35 / 5 = 7°C.