Answer:
Step-by-step explanation:
45x = 9*5*x
81 = 9*9
GCF = 9
Take 9 out using distributive property { a*b - c*b = b*(a-b)}
45x - 81 = 9*5x - 9*9
= 9*(5x - 9)
=9(5x-9)
0
m=(y2-y1)/(x2-x1)
m=(7-7)/(8-0)
m=0/8=0
The total angles of a triangle must add up to 180 degrees, so y = 64 degrees
