Melissa estimated her dog to weigh 9 pounds, but he actually only weighs 7 pounds. find the percent error rounded to the nearest whole percent.

For the equations below which statement is true ? -2x=14 6x=-42

Which is the equation of a line perpendicular to the line with the equation 3x+4y=8

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