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Mathematics, 28.06.2019 09:50 toshahoskins0098

The mean temperature for the first 4 days in january was 7°c. the mean temperature for the first 5 days in january was 9°c. what was the temperature on the 5th day? what is the answer

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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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