The width w of a rectangular swimming pool is 7x2. The area A of the pool is 7x3 – 42x2. What is an expression for the length of
2 answers:
Answer:
Length (L) = x - 6 .
Step-by-step explanation:
Given : The width w of a rectangular swimming pool is 7x². The area A of the pool is 7x³ – 42x².
To find : What is an expression for the length of the pool? Show your work.
Solution : We have given
Width = 7x².
Area of rectangle = 7x³ – 42x².
Let the length = L
Area of rectangle = length * width .
Plugging the values.
7x³ – 42x²= L * 7x².
On dividing both sides by 7x².
.
.
x - 6 = Length.
Therefore, Length (L) = x - 6 .
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