BvbkrockMegsx BvbkrockMegsx

29-04-2016
Mathematics

Answered

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?

A2x-7
B5x+3
C7x-4
D14x-8

Verified Answer :

apologiabiology apologiabiology

29-04-2016

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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