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7. If the perimeter of the rectangle is 6x + 18, then what is the length of the rectangle? (level 4) x + 5 length

7. If the perimeter of the rectangle is 6x + 18, then what is the length of the rectangle? (level 4) x + 5 length
asked 173k views
12 votes
7. If the perimeter of the rectangle is 6x + 18, then what is the length of the rectangle? (level 4)

x + 5
length

asked
User Alex Botev
by
8.0k points

1 Answer

10 votes

Answer:


l = 2x + 4

Explanation:


p = 6x + 18 \\ w = x + 5 \\ p = 2(l + w) \\ 6x + 18 = 2(l + x + 5) \\ 6x + 18 = 2l + 2x + 10 \\ 2l = 4x + 8 \\ l = 2x + 4

answered
User Lucas Pires
by
8.5k points
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