<span>3/20: 0.15
7/50: 0.14
9/25: 0.36
4/15: 0.266667
1/9: 0.111111
9/40: 0.225
5/16: 0.3125
7/9: 0.777778
13/20: 0.65
37/50: 0.74
11/30: 0.366667
19/40: </span>0.475
Answer:
○ 
Step-by-step explanation:

I am joyous to assist you at any time.
Answer:
Measure of angle 2 is 42.
If you are satisfied with the results then plz make me genius.
(72/80)x90=81
Divide seventy-two by eight and multiply it Ninety.