SOLUTION: i) Find the perimeter of a rectangle with a length of 5x and width of x ( write an algebraic expression ) ii) if the perimeter was 30m, what was the value of x?

SOLUTION: i) Find the perimeter of a rectangle with a length of 5x and width of x ( write an algebraic expression ) ii) if the perimeter was 30m, what was the value of x?

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Question 748945: i) Find the perimeter of a rectangle with a length of 5x and width of x ( write an algebraic expression )
ii) if the perimeter was 30m, what was the value of x?
Answer by Cromlix(4381) (Show Source): You can put this solution on YOUR website!
i)Perimeter = 2 x length + 2 x width
= 2 x (5x) + 2 x (x)
= 10x + 2x
ii) 10x + 2x = 30 m
12x = 30m
x = 2.5 m
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