Answer:
x=60 and the missing angle is 140
Step-by-step explanation:
40 × 2x + 20= 180
60 + 2x =180
2x=120
x=60
2(60)+20=140
I tried
1) 400
2) 62
3) i want to say 4.5%
-1/2
The slope of the given line is the coefficient of x, which is 2.
The slope of the perpendicular line is the negative reciprocal of that:
h=90
