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October 20, 2014

October 20, 2014

Posted by **Anonymous** on Thursday, January 12, 2012 at 4:38pm.

- geometry -
**Damon**, Thursday, January 12, 2012 at 5:03pmI guess AC = BC

d^2 = x^2 + 144 = (x-8)^2 + 144

x^2 -16 x + 64 = x^2

x = 64/16 = 4

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