Answer:
Step-by-step explanation:
we know that
The area of a square is
where
s is the length side of the square
In this problem we have
substitute in the formula and solve for s
take square root both sides
997 kg/m³
I just looked it up, hopefully it's the right answer
Answer: k ≥ -1
7k - 2 ≥ -9
add two to both sides
7k ≥ -7
k ≥ -1
The lamppost is 20 feet long.