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Vesna [10]
3 years ago
14

The first side of a triangle measures 3 in. less than the second side, the third side is 2 in. more than the first side, and the

perimeter is 20 in. Set up an equation that relates the sides of the triangles in terms of the perimeter of the triangle.
Mathematics
1 answer:
Debora [2.8K]3 years ago
5 0

Answer:

P = 3x - 4

Step-by-step explanation:

Side 1 = x - 3

Side 2 = x

Side 3 = 2 + (Side 1) = 2 + x - 3 = x - 1

Perimeter = 20 in

Perimeter = Side 1 + Side 2 + Side 3

Perimeter = (x - 3) + (x) + (x - 1)

Perimeter = x - 3 + x + x - 1

Perimeter = 3x - 3 - 1

Perimeter = 3x - 3 - 1

Perimeter = 3x - 4

P = 3x - 4

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