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babymother [125]
3 years ago
5

A clothing store has a rectangular clearance section with a length that is twice the width w. During a sale, the section is expa

nded to an area of (2w^2 + 11w + 12) ft^2. Find the amount of the increase in the length and width of the clearance section.
Mathematics
1 answer:
frosja888 [35]3 years ago
5 0

Answer:

see the explanation

Step-by-step explanation:

step 1

The original area of the rectangular clearance section is equal to

A=LW ----> equation A

we know that

The length is twice the width

L=2W ----> equation B

substitute equation B in equation A

A=(2W)W

A=2W^2\ ft^2

step 2

During a sale, the section is expanded to an area of

A=(2W^2+11W+12)\ ft^2

so

To find out the amount of the increase in the length and width of the clearance section, subtract the areas

(2W^2+11W+12)\ ft^2-2W^2\ ft^2=(11W+12)\ ft^2

therefore

The amount of the increased area is (11W+12)\ ft^2

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