Answer:
-1
I guess
Step-by-step explanation:
Given:
Perimeter of a square = 
To find:
The side length of the square.
Solution:
We know that, the perimeter of the square is 4 times of its side length.

Where, a is the side length.
Perimeter of a square = 
Now,

Divide both sides by 4.



Therefore, the side length of the square is
units.
Answer:
35
Step-by-step explanation:
Given k=-5
Substitute into the equation given
-7(-5) = 35