Four triangles are shown. Based on these triangles, which statement is true?

x = 46, because 180 - 36 - 98 = 46

x = 314, because 180 + 36 +98 = 314

x = 118, because 180 - 98 + 36 = 118

x = 134, because 36 + 98 = 134

Answer these questions showing your work plz

Will mark 50 show all what is the solution to the system of equations? use the substitution method and show your work. -5x+y= -3 -15 x+3y=7 explain what your answer in part (a) tells you about the association of the lines in this system.

Use matrices to solve this linear system: 5x1 − 2x2 = −30 2x1 − x2 = −13 x1 = x2 =