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

asked Oct 10, 2023 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

4.1k points

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10 votes

Answer:

l = 2x + 4

Explanation:

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

Lucas Pires answered Oct 16, 2023

4.8k points

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