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Mathematics, 10.02.2020 01:28 cuki96

The mean temperature for the first 7 days in January was 7 °C.
The temperature on the 8th day was 3 °C.
What is the mean temperature for the first 8 days in January?

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The mean temperature for the first 7 days in January was 7 °C.
The temperature on the 8th day...
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