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Crank
3 years ago
11

solve this problem by using a 5d process or writing and solving an equation. No matter which method you use, be sure to define y

our variable and write an equation to represent the relationship A rectangle has a perimeter of 30 inches. its length is one less than three times its width what are the length and wodyh of the rectangle?
Mathematics
1 answer:
marysya [2.9K]3 years ago
5 0

Answer:

width of the rectangle=x=4in and length of the rectangle=11in

Step-by-step explanation:

Let the width of the rectangle be x, then according to the question, length is one less than three times its width that is l=3x-1.

Now, width=b=x and length=l=3x-1, thus

Perimeter of the rectangle= 2(l+b)

⇒30=2(3x-1+x)

⇒15=(3x-1+x)

⇒15=4x-1

⇒16=4x

⇒x=4in

Thus, width of the rectangle=x=4in and length of the rectangle=l=3x-1=3(4)-1=12-1=11in.

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