faiferschafer faiferschafer

07-10-2016
Mathematics

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Segment BDSegment BD is a perpendicular bisector of segment ACsegment AC . AB=6xAB=6x and CB=x+15CB=x+15 . What is the length of CB¯¯¯¯¯CB¯ ?

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FractalX FractalX

07-10-2016

Since BD is the perpendicular bisector of AC, then AB = BD, so:
6x = x+15
5x=15
x=3
CB = 3+15 = 18

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