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March 2, 2015

March 2, 2015

Posted by **gail** on Saturday, July 27, 2013 at 3:27pm.

X;-4) andAB perpendicular to CD, determine the value of X

- mathematics -
**Steve**, Saturday, July 27, 2013 at 3:40pmAB has slope (5-(-1))/(2-(-1)) = 2

CD has slope (-5/2-(-4))/(x-(-1)) = (3/2)/(x+1) = 3/(2x+2)

So, we need to have

-(2x+2)/3 = 2

x = -4

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