Which is the best definition of a trapezoid?

a.
a parallelogram that can have 2 equal sides

b.
a parallelogram with no equal sides

c.
a quadrilateral with no equal angles

d.
a quadrilateral with 1 pair of parallel sides

What is the missing constant term in the perfect square that starts with x^2 -20x

Use the graph to determine the range. which notations accurately represent the range? check all that apply. (–∞, 2) u (2, ∞) (–∞, –2) u (–2, ∞) {y|y ∈ r, y ≠ –2} {y|y ∈ r, y ≠ 2} y < 2 or y > 2 y < –2 or y > –2

Brian, chris, and damien took a math test that had 20 questions. the number of questions brian got right is 14 more than the number of questions chris got right. damien correctly answered 2 less than the number of questions chris answered correctly. if brian and damien have the same score, which statement is true?