Answer:
I know that (A) is correct for the fisrt one.
Step-by-step explanation:
x=3y
x+y=180
The answer for this question
Answer and Step-by-step explanation:
Decreased by 20%
I'm going to write it so I can see it better:
You can use the difference of squares formula:
9 ± 3 i √ 7 / 2
hope this helps