X+ y = 4 x - 2y = -5 if the first equation is multiplied by 2 and then the equations are added, the result is

Evaluate each expression. determine if the final simplified form of the expression is positive or negative -42 (-4)2 42

Zack and tia played chess for 50 min they put the chessboard away at 11: 20 when did they start

Find the combined area of the triangles. click on the answer until the correct answer is showing. possible answers: a = 4 pi - 8a = 9 pi - 9/2 √3a = 16/3 pia = 16a = 27 pi