If liar is a parallelogram, what is the value of x

Using two or more complete sentences, describe how you can find a vector parallel to b=-2,3

Nine more than four times a number is the same as one less than twice the number. find the number?

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