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April 25, 2014

April 25, 2014

Posted by **jani** on Wednesday, October 6, 2010 at 11:57am.

sorry miss the CD part

- math -
**Reiny**, Wednesday, October 6, 2010 at 12:07pmahh, that's better

make a sketch of a line and label point A, B, C, and D

using CD : AB = 5:2

label AB = 2x and CD = 5x , giving you the 5:2 ratio

From AC = 25 you can now label BC as 25-2x

From BD = 46 you can label BC as 46-5x

so obviously 25-2x = 46-5x

x = 7

sub back in either of BC expressions, to get BC = 11

- math -
**jani**, Wednesday, October 6, 2010 at 12:27pmthanks :D

- math -
**Anonymous**, Monday, October 15, 2012 at 2:06pmgiven formula fro "c" : A= one half (h b + b c)

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