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Question

Write an absolute value inequality that represents the situation.
Then solve the inequality.

The difference between the perimeters of the figures is less than or equal to 3.


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Solution

Illustration of figures:

Considering a rectangle of sides x+1 and 3 and a square of side x

Now perimeter of rectangle =[2(3)+2(x+1)]

Now perimeter of square =4x

According to the question the equation of inequality

[2(3)+2(x+1)]-4x3

Solving the inequality

6+2x+2-4x38-2x38-2x-305-2x052x52xx52

Hence, the solution of inequality is x52.


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