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October 21, 2014

October 21, 2014

Posted by **amanda** on Sunday, March 18, 2012 at 5:57pm.

- algebra 2 -
**Henry**, Monday, March 19, 2012 at 11:27pmA rt. triangle is formed:

X miles = hor side.

15 miles = ver. side.

x+5 = hyp.

x^2 + 15^2 = (x+5)^2.

x^2 + 225 = x^2 + 10x + 25.

x^2 - x^2 + 10x = 225 - 25 = 200.

10x = 200.

X = 200 / 10 = 20 miles.

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