Answer:
angle ECF and angle BCF are complementary
Step-by-step explanation:
m1 = m2 = -2/3
y - ( -7) = -2/3 ( x - 4)
y + 7 = -2/3x + 8/3
y = -2/3x + 8/3 -7
y = -2/3x -13/3
5x^4
Step-by-step explanation:
simply we take 5x^4 bec. it can be divided by 40 and 135