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Mathematics, 12.05.2020 15:57 levicorey846

Suppose you have a data set that includes the values 20,30, and 50. If you add a fourth value to this data set and after doing that the mean of the data set is 50
what was the value that you added?
A.-20
8.40
C. 50
D.100
I need help please someone help

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