so the problem says use triangle ghj, where a,b,c are the midpoints. if ab= 3x +8 and gj= 2x + 24, what is ab? i have no idea what that says it's like talking latin. help!!!!!!!!!!!
You have to use the "mid parallel theorem" (I don't know if this is the appropriate expression in English): "The connection of the midpoints of two sides of a triangle is parallel to the third side and has half of the length of the third side"
I've attached a sketch.
From your question you know that
$\displaystyle 2 \cdot |\overline{AB}| = |\overline{GJ}|$
$\displaystyle 2(3x+8) = 2x+24 ~\implies~x = 2$
Therefore $\displaystyle |\overline{AB}| = 14$