Atlanta, GA to Nashville, TN was decreased from $250 to $180. By what percentage did the cost

Express in the simplest form: (x^2+9x+14/x^2-49) / (3x+6/x^2+x-56)

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

The ratio of the measures of the three angles in a triangle is 2: 9: 4. find the measures of the angels