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September 1, 2014

September 1, 2014

Posted by **Brianna** on Thursday, October 13, 2011 at 7:51am.

- Algebra -
**Reiny**, Thursday, October 13, 2011 at 8:27amSimilar polygons have corresponding sides in the same ratio, so

4/15 = 9/x

4x=135

x = 135/4 or 33.75

the 2nd side is 135/4

check:

9 : (135/4)

=36:135

= 4 : 15

= 20:27

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