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Mathematics, 05.06.2020 00:57 officialrogerfp3gf2s

The low temperature during 4 days in September was 21°C, 21°C, 19°C and 19°C. What was the mean temperature?

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The low temperature during 4 days in September was 21°C, 21°C, 19°C and 19°C. What was the mean temp...

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