Answer: 
Step-by-step explanation:
You need to use the following formula for calculate the area of a square:
Where "s" is the lenght of any side of the square.
You know that the area of a mural is 
. Then, you can substitute this area into the formula and solve for "s", in order to find the side lenght of the mural.
Therefore, this is:
Answer:
55.866 ft
Step-by-step explanation:
Use Pythagorean Theorem:
a² + b² = c²
(39)² + (40)² = c²
3121 = c²
Square root of both sides
c = 55.866 ft should be the answer.
Hope this helps
Answer:
f(x)=-4x+/4
let y=f(x)
y=-4x+4
interchange the role of x & y
x=-4y+4
x-4=-4y
(x-4)/-4=y
y=-(x-4)/4
f-¹(x)=-(x-4)/4
yeah you are right
