Adding Linear Equations Perimeter

Write an expression to represent the perimeter of a triangle with the side lengths of: (x+4) feet, (2x+1) feet, and (3x-2) feet.

• (x + 4) - (2x+1) - (3x-2) feet

• (6x + 5) feet

• (5x - 3) feet

• (x + 4) + (2x+1) + (3x-2) feet

• None

Write the expression to represent the perimeter of the shape.

• 2(5x-4) + 2(5x)

• 5x-4 + 5x-4 + 5x + 5x

• 25x - 4

• 5x + 5x - 4

The perimeter of the rectangle is 2k + 2(k-3). And the perimeter of an equilateral triangle is 3(x+1).

Find the solution if the shapes are equal?

• 7 cm

• 9 cm

• 5 cm

• -4 cm

The perimeter of the rectangle is 2k + 2(k-3). And the perimeter of an equilateral triangle is 3(x+1). If the solution is 9, What is the perimeter of the rectangle?

• 25 cm

• 30 cm

• 35 cm

• 40 cm

• 29

• 65

• 75

• 38

• Michelle did not make a mistake.

The length of a rectangle is 3 times the width. The perimeter of the rectangle is 72 feet. Solve the equation and give the width. 

• w=18

• w = 24

• w = 27

• w = 9 

A rectangle has a perimeter of 70 feet. Its length is five more than twice its width. Which equation can be used to determine the width of the rectangle?

• 2x + 5 = 70 

• 3x + 5 = 70 

• 6x + 10 = 70 

• 5x + 2 = 70

Both shapes have the same perimeter. Solve for x.

• x = 12

• x = 17

• x = 32

• x = 22

Write a linear expression in simplest form to represent the perimeter of the triangle. Find the perimeter if the

value of x is 5 centimeters.

• 10x - 6

  44 cm

• 5x + 6

  31 cm

• 10x + 6

  56 cm

• 10x + 9

  59 cm