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Nikolay [14]
3 years ago
5

the length of a rectangle is 2 inches less than 3 times it width . The perimeter of the rectangle is 124 inch. WHat is the lengt

h of the rectangle
Mathematics
1 answer:
vitfil [10]3 years ago
5 0

Step-by-step explanation:

let w = width

length = 3w-2

perimeter = 2*length + 2*width

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

perimeter = 6w - 4 + 2w

perimeter = 8w - 4

perimeter = 124 inch

8w - 4 = 124inch

<em>+4 to each side</em>

8w = 128inch

<em>divide each side by 8</em>

w = 16

length = 3w-2

           = 3(16) - 2

length = 46 inch

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The actual height of the building is 67 1/2 feet

<h3>Complete question</h3>

The courthouse is the tallest building in the city. If it is 7 1/2 inches tall in the model, how tall is the actual building?

Scale factor: 1 inch = 9 feet

<h3>How to determine the actual height?</h3>

The given parameters are:

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This means that:

7 1/2 inches : Actual = 1 inch = 9 feet

So, we have:

Actual =7 1/2 * 9 feet

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Hence, the actual height of the building is 67 1/2 feet

Read more about scale ratio at:

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240

Step-by-step explanation:

Assign Variables:

(I will choose mine a little bit differently)

d = length of garden

d = 20 feet

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Equations and Solution:

A=d%2Aw and perimeter given as 64 feet means 2d%2B2w=64.

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2w=64-2d

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highlight%28w=12%29 feet

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FINDING AREA VALUE

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