<h2>Answer</h2>

Or as ordered pairs: 
<h2>Explanation</h2>
Lets solve our system of equations step by step
equation (1)
equation (2)
1. Solve for
in equation (2)

equation (3)
2. Replace equation (3) in equation (1) and solve for 




or
3. Replace the values of
in equation (3) and solve for 
- For 


or 
- For 



or 
So, the solutions of our system of equation are:

I don't think they are equivalent. try it yourself
The correct answer is A. All triangles' interior angles equal 180.
Answer:
65.45
Step-by-step explanation:
you do 3.14*5^2*2.5/3