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Mathematics 14 Online
william4743a:

Write and solve an equation to find the value of the variable. 104, 137, 154, 131, x; mean = 130

justjm:

If you recall the arithmetic mean is just adding all the terms and dividing the sum by the # of terms Do this backward! \(\frac{104+137+154+131+x}{5}=130\) and you can solve for x (:

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