Mathematics, 20.05.2021 16:40, kenziekey831

Quadrilateral OPQR is inscribed in circle N, as shown below. Which of the following could be used to calculate the measure of ∠QRO? Circle N is shown with a quadrilateral OPQR inscribed inside it. Angle O is labeled x plus 16. Angle P is not labeled. Angle Q is labeled 6x minus 4. Angle R is labeled 2x plus 16.

m∠QPO + (x + 16)° + (6x − 4)° = 360°
m∠QPO = (x + 16)° + (6x − 4)°
m∠QPO + (2x + 16)° = 180°
m∠QPO = (6x − 4)° + (2x + 16)°

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Quadrilateral OPQR is inscribed in circle N, as shown below. Which of the following could be used to...