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Illusion [34]
3 years ago
6

the length of a rectangle is 4 less than twice the width. the perimeter of the rectangle is 34 feet. find the length and width o

f the rectangle.
Mathematics
1 answer:
Dmitry_Shevchenko [17]3 years ago
7 0

Answer: The length is 10ft, the width is 7ft.


Step-by-step explanation:

Let L be the length

Let w be the width

The equation for the perimeter is:

2L+2w=34

We also know that L=2w-4

So we can insert L=2w-4 into 2L+2w=34

2(2w-4)+2w=34

4w-8+2w=34

6w=42

w=7

If the width is 7, we can insert it into 2L+2w=34 to find out the length

2L+14=34

2L=20

L=10

The width is 7 ft, the length is 10 ft.

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