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December 21, 2014

December 21, 2014

Posted by **Vanessa** on Saturday, March 17, 2012 at 5:30pm.

A.4

B.7

C.6

D.none of above

- Math -
**Polina**, Saturday, March 17, 2012 at 6:34pmuse pythagorean theorem!

a^2 + b^2 = c^2

- Math -
**Steve**, Sunday, March 18, 2012 at 2:40pmactually, use similar triangles.

XY:AB = YZ:BC

XY:30 = 10:60

XY=5

so, (D)

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