Using the quadratic formula, which of the following are the zeros of the quadratic equation below

Volume of a cylinder with a radius of 13 in and height of 30 in

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

Which is the solution to the inequality? 2 3/52 1/15 b< 3 2/15 b> 3 2/15