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Mathematics 17 Online
candraaaaa:

A triangle has a perimeter represented by the expression 9x + 7 A square has a side length represented by 4x – 3. Which expression represents the total perimeter of the two figures? 20x 4x2 + 9x – 5 13x + 4 25x – 5

rthrth:

Since the square only says the one side length, you'll need to multiply 4x-3 by 4. Then you just add that to the perimeter of the triangle.

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