SOLUTION: KM is a straight line of 13 units. if K has the coordinate (2,5) and M has the coordinate (x , 7) find the possible value of x.

Algebra ->  Length-and-distance -> SOLUTION: KM is a straight line of 13 units. if K has the coordinate (2,5) and M has the coordinate (x , 7) find the possible value of x.      Log On


   

Question 980854: KM is a straight line of 13 units. if K has the coordinate (2,5) and M has the coordinate (x , 7) find the possible value of x.
Answer by josgarithmetic(39630) About Me  (Show Source):
You can put this solution on YOUR website!
Distance Formula

sqrt%28%28x-2%29%5E2%2B%287-5%29%5E2%29=13

%28x-2%29%5E2%2B%287-5%29%5E2=169

%28x-2%29%5E2%2B4=169

%28x-2%29%5E2=165-----------You can finish this from here; just do not try to make the process more complicated; DO NOT try to multiply the square binomial.

sqrt%28%28x-2%29%5E2%29=0%2B-+sqrt%28165%29
x-2=0%2B-+sqrt%28165%29
highlight%28x=2%2B-+sqrt%28165%29%29