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20-09-2015
Mathematics

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If B is the midpoint of AC,AB=x+6 and AC=5x-6 then what is BC

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20-09-2015

Look at the picture.

[tex]\overline{BC}=\overline{AC}-\overline{AB} \\ \\ \Downarrow \\ \\ \overline{BC}=5x-6-(x+6)= 5x-6-x-6=4x-12[/tex]

BC is 4x-12.

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