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Q is the midpoint of PR, PQ =2z, and PR=8z-12, Find z, PQ, and PR. Please explain?!??!?!?
Update:
But why did you divide it by 2
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- AnthonyLv 78 years agoFavorite Answer
If Q is the midpoint of PR, then PQ must be half of PR.
Use that info to help solve for z:
2z = (8z - 12) / 2
2z = 4z - 6
-2z = -6
z = 3..........now find the lengths
PQ = 2(3) = 6 units
PR = 8(3) - 12 = 24 - 12 = 12 units
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