Mathematics, 10.12.2020 06:50 isabelperez063

If the mean of the observations: x+1, x+2, x+3, x+4, x+5, x+6, x+7, x+8, x+9, x+10 is 20, what is the mean of the last three digits?

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If the mean of the observations: x+1, x+2, x+3, x+4, x+5, x+6, x+7, x+8, x+9, x+10 is 20, what is t...