27 in △abc, bc=34 cm. mn is a segment, which goes through the midpoint of the side bc , perpendicular to line ac . segment mn divides side ac into two segments: an=25 cm and nc=15 cm. what is the area of the triangle abc?

step-by-step explanation:

step 1: solve one of the equations for one of the variables. let's solve the first equation for y:

step 2: substitute that equation into the other equation, and solve for x.

step 3: substitute x = 4 x = 4 x=4 into one of the original equations, and solve for y.