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gmany

The formula of a midpoit of QR:

[tex]M\left(\dfrac{x_Q+x_R}{2},\ \dfrac{y_Q+y_R}{2}\right)[/tex]

We have Q(10, -8) and R(5, -2). Substitute:

[tex]x_M=\dfrac{10+5}{2}=\dfrac{15}{2}=7.5\\\\y_M=\dfrac{-8+(-2)}{2}=\dfrac{-10}{2}=-5[/tex]

Answer: M(7.5, -5)

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