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September 17, 2014

September 17, 2014

Posted by **Alyssa** on Friday, January 22, 2010 at 3:46am.

- Geometry -
**Reiny**, Friday, January 22, 2010 at 10:31amThe midsegment of a trapezoid is the arithmetic mean of the two parallel sides

http://www.9math.com/book/midsegment-trapezoid

so 6x-24 = (5 + 2x+7)/2

12x - 48 = 2x + 12

10x = 60

x = 6

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