Answer:
The missing angle I believe is 25%.
Step-by-step explanation:
180-130=50
Divide 50 by 2 and it equals 25. 25 degrees for each angles.
80% of a gram.
One gram is $100, aka $100 is 100% of a gram, so $80 would be 80% of a gram.
Do you mean the ratio 1:2
We know:


substitute a = -3; b = 7; c = -15