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Mathematics 21 Online
OpenStudy (anonymous):

Q bisects PR, PQ = 3y, and PR = 42. Find y and QR.

ganeshie8 (ganeshie8):

draw it out

ganeshie8 (ganeshie8):

to bisect means, to divide into two equal pieces

ganeshie8 (ganeshie8):

|dw:1377892698951:dw|

ganeshie8 (ganeshie8):

thats PR, since Q bisects PR, Q lies exactly at same distance from both P and R

ganeshie8 (ganeshie8):

|dw:1377892773130:dw|

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