Answer:
63 feet
Step-by-step explanation:
perimeter is the sum of all four sides and, since it's a square then all sides are equal
to find how long each side is divide 252 by 4
252÷4 = 63
Answer: 48
Step-by-step explanation:
It is the negative of 16 times the negative of 3.
Not sure if this is the answer but I hope it helps!

This is equal to:

When you add a negative number, it turns into subtraction.
First, I would change it to mixed numbers:

Now, you need to change the denominators to make sure they are the same on both fractions. I changed the first fraction's denominator to 4 so they match. You can do this by multiplying the numerator by 2:

Now, you simply subtract:
10-9=1
1/4 is your answer.
I hope this helps :)
2 quarters, 7 pennies
5 dimes, 7 pennies
10 nickels, 7 pennies
Answer: Idk if this is right but the answer is 21.2, Each time you add 4.8cm
Step-by-step explanation: 4 cups=11.6cm
11.6cm+4.8cm=16.4cm
16.4cm+4.8cm=21.2