This can be solved using a system of equations.

Subtract y from both sides.

Substitute:

Subtract 80 from both sides:

Divide both sides by 5:

Substitute.
The answer is 10.95445 and it is irrational because it is not a full square
Answer:
*helps*
Step-by-step explanation:
done (:P)
Answer:
0
Step-by-step explanation:
I’m not sure but I hope this helps