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Mathematics, 25.03.2021 20:50 cddominguez63

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

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The mean temperature for the first 4 days in January was 7°C. The mean temperature for the first 5...
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