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pogonyaev
3 years ago
8

Zohar is using scissors to cut a rectangle with a length of 5x – 2 and a width of 3x + 1 out of a larger piece of paper. Which e

xpression can be used to find the perimeter of the rectangle and what is the perimeter if x = 4?
Mathematics
2 answers:
sweet-ann [11.9K]3 years ago
4 0

Answer with Step-by-step explanation:

Zohar cut a rectangle with a length of 5x – 2

and a width of 3x + 1

We know that:

Perimeter of rectangle is:

Perimeter=2(length+width)

                =2(5x-2+3x+1)

                =2(8x-1)

                =16x-2

Hence, expression which can be used to find the perimeter of the rectangle is:

16x-2

Now, when x=4

16x-2=16×4-2

        =62

Hence, when x=4 ,Perimeter=62

Andreyy893 years ago
4 0

Answer:

P=2(8x-1)

P=62 at x=4

Step-by-step explanation:

Given: The length of the rectangle is 5x-2 and width of the rectangle is 3x+1

To find: An expression that can be used to find the perimeter of the rectangle, and the perimeter when x is 4.

Solution:

Here, Length is given as 5x-2

width of the rectangle is 3x+1

Let P represents the perimeter of the rectangle

We know that perimeter of a rectangle is 2(l+w)

So, we have

P=2(l+w)

P=2(5x-2+3x+1)

P=2(8x-1)

Therefore, the expression to find the perimeter is P=2(8x-1)

Now, we need to find the perimeter at x=4

On substituting x=4  in P=2(8x-1) we have,

P=2(8(4)-1)

P=2(32-1)

P=2(31)

P=62

Hence, the perimeter is 62 units when x is 4.

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