Solve for z.

–2.9 + 4.2z = –14.73 − 12.74 + 0.3z

z =

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

Someone me! will award brainliest if u explain and answer!

What are linear equations? could'ya explain too me, ? ! and how do you see what graph is a proportional relationship?