The length of a rectangle is one inch less than three times its width. if the perimeter of the rectangle is 54 inches, find the length

The perimeter of the rectangle is twice the sum of the length and the width.The length of the rectangle is 20 inches long.

Given information-

The length of a rectangle is one inch less than three times its width.

The perimeter of the rectangle is 54 inches.

The perimeter of the rectangle is the boundary by which the rectangle is covered. The perimeter of the rectangle is twice the sum of the length and the width.

It can be given as,

Here, is the length of the rectangle and is the width of the rectangle.

Now it is given that the length of a rectangle is one inch less than three times its width. Suppose the length of the rectangle is inches long. Thus the width of the rectangle is,

Thus the perimeter of the rectangle is,

Hence the length of the rectangle is 20 inches long.

Learn more about the perimeter of rectangle here;

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w - width

3w - 1 - length

54 in - perimeter

w + w + (3w - 1) + (3w - 1) = 8w - 2 - perimeter

The equation:

8w - 2 = 54      add 2 to both sides

8w = 56     divide both sides by 8

w = 7

3w - 1 = 3(7) - 1 = 21 - 1 = 20

part a

x     y

0     8

1     7.5

2     7

3     6.5

4     6

5     5.5  

for every hour i deducted .5 inches from the length of the candle

part b

it is a function because for every x value there is only one y value

part   c

for every x value there is only one y value

x       y

0       8

1       7.6

2       7.2

3       6.8

step-by-step explanation: