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Expression and Perimeter and how you did it, please?

Expression and Perimeter and how you did it, please?-example-1

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19) 20)
The expression would be:
3x+4x+5x
If x=8, the perimeter would be:
3(8)+4(8)+5(8)
24+32+40
=96 feet

21) 22)
The expression would be:
x+14+5+7+5.5+2x
If x=10.5, the perimeter would be:
10.5+14+5+7+5.5+2(10.5)
10.5+14+5+7+5.5+21
=63 feet

Hope this helps.
-Benjamin

User Saleem Ali
by
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