Graph △DEF with vertices D(2, 4), E(6, 4), and F(4, 8) and its image after a dilation centered at the origin with a scale factor of 3/2. Then find the difference between the area of the image and the area of the preimage.

One positive number is 9 more than twice another. if their product is 95, find the numbers

Sketch one cycle if the cosine function y=2cos2theta

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