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17 July, 14:21

The sum of the angle measures in a triangle is 180. The angles of a

certain triangle measure x°, 2xº, and 6x° Solve for the measure of

each angle.

40°, 60° and 80°

50°, 50° and 80°

20°, 40° and 120°

30°, 50° and 100°

+1
Answers (2)
  1. 17 July, 14:32
    0
    20, 40, and 120

    Step-by-step explanation:

    x, 2x, and 6x have one thing in common: X. X is the same number throughout so if we find x we can just finish the equation by multiplying x by its coefficient.

    x+2x+6x = 180. (Sum of angle measures)

    9x = 180 (Add up the left side)

    9x/9 = 180/9 (Divide both sides by 9 to cancel out the 9 and leave the x)

    x = 20

    Now we know what x is so:

    Angle 1 = 20. (We know x is 20, so that one is easy.)

    Angle 2 = 40 (Simply 2*x or 2*20)

    Angle 3 = 120 (Simply 6*x or 6*20)
  2. 17 July, 14:49
    0
    It's is 20,40 and 120
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