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12 February, 11:00

A rectangle has an area of 10x^2-29x-21 square units. Which of the following could represent the primeter of the rectangle in terms of x?

a. 2x-7

b. 5x+3

c. 7x-4

d. 14x-8

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Answers (1)
  1. 12 February, 11:46
    0
    Area=LW

    10x^2-29x-21=area

    factor and those are the lengh and width

    (2x-7) (5x+3)

    perimiter=2 (L+W)

    P=2 (2x-7+5x+3)

    P=2 (7x-4)

    P=14x-8

    answer is D
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