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Alex drew a circle with right triangle prq inscribed in it, as shown below: the figure shows a circle with points p, q, and r on it forming an inscribed triangle. side pq is a chord through the center and angle r is a right angle. arc qr measures 80 degrees.

If the discriminant if a quadratic equation is 4 which statement describes the roots?

Which expression is equivalent to the expression for the perimeter of the larger garden?