OneFancyPerson OneFancyPerson

14-09-2016
Mathematics

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The length of a rectangle is 4 units shorter than one-fourth of the width, x. Write an expression that represents the perimeter of the rectangle (use one variable and a fraction)

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taskmasters taskmasters

27-09-2016

Perimeter is the sum all lengths of a shape. For a rectangle, the perimeter is calculated by adding the 2 lengths and 2 widths. It is expressed as:

P = 2l + 2w

From the data of the length and width above, we form an expression:

P = 2l + 2w
P = 2(w/4 - 4) + 2w
P = 2w/4 - 8 + 2w
P = 5w/2 - 8

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