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valentina_108 [34]
4 years ago
8

A) if x=4 evaluate the perimeter of the blanket. Don’t forget to include the measurement in your final answer.

Mathematics
1 answer:
Tanzania [10]4 years ago
6 0
Formula for perimeter of a rectangle:  P = 2W + 2L

Here, P = 2(x-3 ) cm + 2(3x+7) cm = 2x - 6 + 6x + 14   (cm)

Combine like terms:  8x + 8   cm (simplest form)  This is the perimeter.

Now let x = 4:  P(x=4) = 8(4) + 8   cm   = 40 cm
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