Solve the system of equations: (find the ordered pair that is a solution to both equations). y=4x-3y=-2x+9

What is the measure of x? 43° 86° 172° 344°

Find the value of the variable and the length of each secant segment.

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