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September 2, 2014

September 2, 2014

Posted by **dane** on Tuesday, January 17, 2012 at 11:34am.

What is the distance from A to A'?

square root 6

2 square root 2

5

2 square root 5

- Math -
**Henry**, Wednesday, January 18, 2012 at 6:45pmA(-2,3),A'(x,y).

x+4 = -2+4 = 2.

y+2 = 3+2 = 5.

A(-2,3),A'(2,5).

D^2 = (2-(-2))^2 + (5-3)^2 = 20,

D = sqrt(20) = sqrt(4*5) = 2*sqrt5.

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