Here is your answer
Given area is
z^2 + 18z + 81
= z^2 + 2× z × 9 + 9^2
[using (a+b)^2= a^2 + 2ab + b^2], we get
= (z+9)^2
we know that area of a square is represented by side^2.
So, here
Side of square is

HOPE IT IS USEFUL
Answer:
A.height of the rectangle
Step-by-step explanation:
I say tbh what does the color gotta do with the equation. red and blue= spiderman. And if u think abt it you can already see the colors we js aren't sure of the height.
If

were incorrect, it means that

were correct

There were 28 problems ;)
Answer:
$33.60
Step-by-step explanation:
First we take 80% of $40.
1. $40 * 0.80 = $32
Next we take 105% of $32.
2. $32 * 1.05 = $33.60
2.80*.15=.42
2.80-.42= 2.38
the answer is $2.38 (this was the price before)