Find m2ABC.
А
(7x - 1)”.
(3x -9)°
D
B
С
Answer:
Step-by-step explanation:
7x - 1 + 3x - 9 = 180
10x - 10 = 180
10x = 190
x = 19
7(19) - 1 = 133 - 1 = 132
3(19) - 9 = 57 - 9 = 46