900 is the correct answer
7x+7b = 7(x+b)
..............
There are 39 boys.
First you divide 4 into 52 because there are 3 boys for 4 girls.
Then you take the quotient, 13, and multiply by 3.
Your going to divide them then take the same score and double it then subtract the total and the doubles number
Answer:
Step-by-step explanation:
width = x ft
Length = 8x
Area of rectangle = 72 sq.feet
length * width = 72
8x * x = 72
8x² = 72
x² = 72/8
x² = 9 = 3²
x = 3
Width = x = 3 feet
Length = 8x = 8*3 = 24 feet
Perimeter = 2*(length + width)
= 2*(24 + 3) = 2*27 = 54 feet
