Abag contains 4 yellow marbles and 6 green marbles. two marbles are drawn at random. one marble is drawn and not replaced. then a second marble is drawn. what is the probability that the first marble is green and the second one is yellow? 1/154/151/63/2

In the following diagram it is given that dec,ab || dc, ad || eb, and ad is congruent to bc. a)why isn't abc a parallelogram even though it has a pair of parallel sides and a pair of congruent sides b)explain why be must be congruent to bc. further explain what type of triangle this makes triangle abc and what it tells you about angle 1 and angle 2c) finally why must angle 3 be congruent to angle 1? further, explain why we know that angle 3 is congruent to angle 2