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Mathematics 14 Online
OpenStudy (anonymous):

Find the perimeter of the rectangle pictured.

OpenStudy (anonymous):

OpenStudy (anonymous):

A. 11x + 9 B. 22x - 2 C. 18x - 20 D. 11x - 1

OpenStudy (anonymous):

I'm thinking it's C.

OpenStudy (anonymous):

OpenStudy (anonymous):

add all 4 sides

OpenStudy (anonymous):

How?!

OpenStudy (anonymous):

it's B . sorry :(

OpenStudy (anonymous):

9x-5 + 9x-5 + 2x+4 + 2x+4

OpenStudy (anonymous):

Ugh.

OpenStudy (anonymous):

Thanks anyways though!

OpenStudy (anonymous):

perimeter = add ALL the side lengths :)

OpenStudy (anonymous):

\[2(2x+4)+2\times(9x-5)\]

OpenStudy (anonymous):

That's the somewhat complicated way to do it if you're unsure of how to calculate the perimeter... :)

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