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

User Dolina
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1 Answer

13 votes
13 votes

We have to sum the numbers together here.


\begin{gathered} (104+137+154+131+Z)/(5)\text{ = }(130)/(1) \\ (526+Z)/(5)\text{ = }(130)/(1) \\ 526\text{ +Z = 5 X 130} \\ 526\text{ + Z = 650} \\ Z\text{ = 650 -526} \\ Z\text{ = 124} \end{gathered}

Answer is 124

User Tom Tregenna
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