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Naeethaasavage
I think 300 is the value of X ! try that if it dont work i got a better answer

Answer: 55

Explanation:

For any quadrilateral that is inscribed in a circle, ie has all four points on the circle like this, the opposite angles are always supplementary. They add to 180 degrees.

x+125 = 180

x+125-125 = 180-125 ... subtract 125 from both sides

x = 55

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