Answer:

Step-by-step explanation:
So we have the equation:

First, subtract 9 from both sides:

Divide both sides by -4:

Definition of Absolute Value:

Subtract 3 from both sides:

Divide both sides by 5:

And we're done!
A = 81 square in.
s = sqrt(A)
s = sqrt(81)
s = 9 in.
Answer:
1.61
Step-by-step explanation:
6/((sqrt3)+2) in a calculator
B. Every third student entering the school in the morning