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Mathematics 15 Online
OpenStudy (anonymous):

what is the value of x here? http://tinypic.com/view.php?pic=35mff3r&s=6

Directrix (directrix):

Polygon PQRS is a quadrilateral inscribed in a circle. Theorem: If a quadrilateral is inscribed in a circle, opposite angles are supplementary. So, Angles Q and S are supplementary. If m<Q = 10x, then m<S = 180 - 10x The sum of the interior angles of a quadrilateral is 360. So, (5x+20) + (7x-8) + 10x + (180-10x) = 360 Solve the equation for x. @primadonnagirl123

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