In trapezoid abcd, the parallel sides ab and cd have lengths of 8 and 20 units, respectively, and the altitude is 12 units. points e and f are the midpoints of sides ad and bc, respectively. what is the area of quadrilateral efcd in square units?

Phyllis and chen are saving money to go to a football game. each friend starts with some money and saves a specific amount each week. phyllis made a graph to show the total she has saved at the end of each week. chen wrote an equation to show the total, y, he has saved at the end of each week, x. y = 15x + 15 compare the amount that each friend has when both friends start saving. select the correct answer from the drop-down menu to complete the statement. phyllis starts with $ and chen starts with $

Given that ot =5, xt=12, and ox= 13 is xy tangent to circle o at t? explain.

Simply 8x squared + 5(7x squared- x) - 2x =