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xxTIMURxx [149]
3 years ago
12

George walked around the entire perimeter of his rectangular garden. The length of his garden was 12 yards and the width was 8 y

ards.
How far did George walk?


A. 20 yards


B. 40 yards


C. 64 yards


D. 144 yards

Mathematics
1 answer:
Marina86 [1]3 years ago
8 0
To find perimeter, you use this equation for a parallelogram:
2l+2w=p
Let’s not put the numbers in,
2(12)+2(8)
24+16
40
So b, 40 yards is how much he walked.

















To
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Answer:

\boxed{\sf x=-2}

\boxed{\sf y=-4}

Step-by-step explanation:

<u>First, Let's  solve for x in -2x+2y=-4:</u>

\sf -2x+2y=-4

<u>Subtract 2y from both sides:</u>

\sf -2x+2y-2y=-4-2y

\sf -2x=-4-2y

<u>Divide both sides by -2:</u>

\sf \cfrac{-2x}{-2}=-\cfrac{4}{-2}-\cfrac{2y}{-2}

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<u>Now, we'll substitute x=y+2 to 3x+3y=-18:</u>

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<u>Simplify:</u>

\sf 6+6y=-18

<u>Now, let's solve for y in 6+6y=-18</u>

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<u>Subtract 6 from both sides:</u>

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<u>Divide both sides by 6:</u>

\sf \cfrac{6y}{6}=\cfrac{-24}{6}

\bold{ y=-4}

<u>Now, substitute y=-4 into x=2+y:</u>

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\sf x=2+\bold{-4}

\bold{x=-2}

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<u>_____________________________________</u>

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Hey!~ 

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