suppose that z varies jointly with x and y. When x=2, y=2, z=7 write the equation that models the relationship

asked Apr 9, 2023 139k views

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$\begin{gathered} z=\text{ x + y + b} \\ 7\text{ = 2+2+b} \\ 7\text{ = 4+b} \\ 7-4=b \\ b=\text{ 3} \\ z=\text{ x + y +3} \end{gathered}$

Lafexlos answered Apr 13, 2023

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