Respuesta :

sqdancefan

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Answer:

  x = 90°

Step-by-step explanation:

Half the sum of x and 120° is the angle where the chords cross, 105°. Then ...

  105° = (1/2)(x +120°)

  210° = x + 120°

  210° -120° = x = 90°

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Additional comment

z is the arc that finishes the circle: 360° -90° -68° -120° = 82°.

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