Segment Addition Postulate states that given two points, in this case, N and O, a third point, in this case M lies on the line segment NO if and only if the distances between the points satisfy the equation NM+MO = NO.

I think that you missed information about NM and MO. Probably you forgot to copy an equation including the variable X to express the distances NM and MO. Please, check the information to solve the problem.

Oct 2nd, 2014

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