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24 October, 17:30

P = a + b + c; P = 28, a = 5, b = 11 (Perimeter of a triangle)

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Answers (2)
  1. 24 October, 17:38
    0
    c = 12.

    Step-by-step explanation:

    Fill in what you know. 28 = 5 + 11 + c. Add 5 and 11 together. 28 = 16 + c. Then subtract 16 from both sides 28 - 16 = 16 - 16 + c. Then the number you have left is your answer.
  2. 24 October, 20:16
    0
    c=12

    Step-by-step explanation:

    P=a+b+c

    28=5+11+c; combine 5 and 11.

    28=16+c; subtract 16 from each side to get c

    28-16=12
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