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Mathematics, 03.05.2020 14:28 afifakiran5226

If the mean of the data set 11, 19, 4a, 7a, 14a is 71, then what is the value of a?

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If the mean of the data set 11, 19, 4a, 7a, 14a is 71, then what is the value of a?...
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