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Given the set: ${5, 3, 6, - 1, x, 3, - 5, 12}$ ${5,3,6,-1,x,3,-5,12}$ , for what x would the mean of the set be 0?

1 Answer

Nov 22, 2015

The sum of the set must be zero.

Explanation:

If the mean is zero, then the sum of the set must also be equal to zero.

$5 + 3 + 6 - 1 + x + 3 - 5 + 12 = 0$ $5+3+6-1+x+3-5+12=0$

$23 + x = 0$ $23+x=0$

$x = - 23$ $x=-23$

hope that helped

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