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Mathematics, 08.12.2019 04:31 corinaartsy

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 me...

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