First one and third one are both corrects that answer to your question and plz mark me Brainly it
Answer:
I think 90 degrees hope it helps
Answer:
The side length of of the base of the tank is 15 inches.
Step-by-step explanation:
We are given the following in the question:
Cost of the tank and filter system = $280
Perimeter of tank base = 60 inches
The perimeter of tank is in the shape of square.
We have to find the side length of the base of the tank.
Perimeter of tank base = Perimeter of square =

Thus, the side length of of the base of the tank is 15 inches.
The answer is 8 because when you replace x by 8 it equals 24