Mathematics

Question

The second side of a triangle is 7 inches more than the first side. The third side is 4 inches less than 3 times the first. The perimeter is 28 inches. Find the length of the three sides of the triangle.

1 Answer

  • Answer:

    First side; 5 in

    second side: 12 in

    third side: 11 in

    Step-by-step explanation:

    A: first side     B: second side     C: third side

    b = a + 7

    c = 3a -4

    a + b + c = 28

    a + (a + 7) + (3a -4) =28

    5a + 3 =  28

    5a = 28 -3 = 25

    a = 5

    b = 12

    c = 11

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