Geometry

ABCD is a quadrilateral inscribed in a circle, as shown below:

Circle O is shown with a quadrilateral ABCD inscribed inside it. Angle A is labeled x plus 16. Angle B is labeled x degrees. Angle C is labeled 6x minus 4. Angle D is labeled 2x plus 16.

What equation can be used to solve for angle C?

(x + 16) + (x) = 180
(x + 16) + (6x − 4) = 180***
(x + 16) − (2x + 16) = 180
(x + 16) + (x) = 90

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  1. correct

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  2. ABCD is a quadrilateral inscribed in a circle, as shown below:

    please help
    What equation can be used to solve for angle A?
    (x + 16) + (6x − 4) = 180
    (x + 16) + (x) = 90
    (x + 16) − (2x + 16) = 180
    (x + 16) − (x) = 90

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    2. 👎

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