Using the quadratic formula to solve x2 + 20 = 2x, what are the values of x? O 1+ 211
O-1419
O 1+219
O 1+19

Find the measure of the interior angles of the following regular polygons: a triangle, a quadrilateral, a pentagon, an octagon, a decagon, a 30-gon, a 50-gon, and a 100-gon.

3382-299=3383- ? fill in the blank?

1yd 1 ft = 1 1/12 1 1/3 1 1/2 1 1/6