It is actually a square.
90 feet on side so the perimeter is 4 x 90 =360
Answer:
The width will be 
Step-by-step explanation:
Thinking process:
Let the model be:

factoring out 4 gives:

Factorizing the expression in the parentheses gives:

Therefore, since the expression in the parentheses cannot be factorized further, the expression is:

Answer:
x^2-2x+1
Step-by-step explanation:
f(x)=x^2
g(x)=x-1
f(g(x))=f(x-1)=(x-1)^2=x^2-2x+1
Answer:
5 packages
Step-by-step explanation:
each would have five if they made 5 sandwhiches
C - Irrational D- irrational E- Addition