What quadrilateral always has 4 congruent angeles and opposite sides that are congruent and parallel

Find and simplify an expression for the area of five rows of x squares with side lengths of x centimeters.

What statement is true? 2x^2-9x+2=-1

Which statements describe the solutions to the inequality x< -20 check all that apply. there are infinite solutions. each solution is negative. each solution is positive. the solutions are both positive and negative. the solutions contain only integer values. the solutions contain rational number values.