Name the subsets of real numbers to which the number zero belongs.

Aquadrilateral has exactly one pair of parallel sides. which name best describes the figure?

The measure of angle 0 is 600 degrees

Parabolas y=−2x^2 and y=2x^2+k intersect at points a and b that are in the third and the fourth quadrants respectively. find k if length of the segment ab is 5.