For which discriminant is the graph possible? b2 – 4ac = 0 b2 – 4ac = –2 b2 – 4ac = 6

Can someone me do math because i am having a breakdown rn because i don’t get it

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

8. kelly wants to buy a magazine that is $25. later the magazine was marked up an additional 20%. what is the new price?