Zack and tia played chess for fifteen min. they put the chessboard away 11.20.which clock shows the time they started there chess game?

In the proof of the triangle angle sum theorem, you must draw an auxiliary line. which construction must you use to draw this line?

Geometry answer picture question pls . reason and statements

Its due ! write an equation in which the quadratic expression 2x^2-2x 12 equals 0. show the expression in factored form and explain what your solutions mean for the equation. show your work.