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9 March, 04:49

In Triangle A B C, what is the value of x? Triangle A B C. Angle A is (10 x minus 10) degrees, angle B is (8 x) degrees, angle C is (10 x + 8) degrees. 5.5 6.5 55 65

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Answers (2)
  1. 9 March, 06:04
    0
    x = 6.5

    Step-by-step explanation:

    Since all angles in a triangle adds up to 180°, we have:

    10x - 10 + 10x + 8 + 8x = 180

    28x - 2 = 180

    28x = 182

    x = 182/28 or 6.5
  2. 9 March, 07:52
    0
    6.5

    Step-by-step explanation:

    Sum of three angles of triangle = 180

    10x - 10 + 8x + 10x + 8 = 180

    28x - 2 = 180

    28x = 180 + 2

    28x = 182

    x = 182/28

    x = 6.5
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