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Glencoe Math: Course 2, Volume 2 View details

6. Add Linear Expressions

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Exercise 25 Page 402

Use the formula for perimeter of a triangle.

D

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Consider the given diagram of the triangle.

The perimeter of a figure is the sum of its side lengths. This gives us the following formula for the perimeter of our triangle. ( x-2) + ( 2x+3) + ( 4x+2) Let's simplify this expression. & x-2 &+ 2x+3 &+ 4x+2 & 7x + 3 The simplified expression for the perimeter of a triangle is 7x+3. Therefore, answer D is correct.