Which of the following improper fractions is equal to the mixed number 8 7/8

How can the correlation in the scatter plot graph below best be described? positive correlation negative correlation both positive and negative no correlation

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

If cos(2x) = tan^2(y), show that cos(2y) = tan^2(x).