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KengaRu [80]
3 years ago
8

Sally is having a problem with her puppy leaving the yard so she decides to build a new fence. The length of the yard is 10 feet

more than 3 times the width. She needs 60 feet of fencing to do the job. Find the length of the yard.
Possible answers:
28 ft, 25 ft, 47.5 ft, 22 ft
Mathematics
1 answer:
Cerrena [4.2K]3 years ago
8 0

The length of the yard is 25ft.

In order to find this we first need to set up variables for the length and the width. Since we don't know anything about the width, we'll set it as x. Then, we know the length is equal to ten more than three times the width. Since the width is x, we can write the length as 3x + 10. Now we can use the formula for the perimeter of a rectangle to solve for x.

2l + 2w = P

2(3x + 10) + 2(x) = 60

6x + 20 + 2x = 60

8x + 20 = 60

8x = 40

x = 5

Now that we have a value for x, we can plug into the length equation and find the length.

3x + 10

3(5) + 10

15 + 10

25

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I am having difficulties solving this problem someone pls help.
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7 0
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Read 2 more answers
I NEED HELP
denpristay [2]
2 times a number minus 9 is less than or equal to 21. and in inequality form that’s: 2x - 9 >_ 21 and u make a number line and a closed circle on 15 and an arrow going right. i hope i understood your question right
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