Write the square root of -9+ the square root of 121 as a complex number in the form of a+ bi

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

Asmall book publisher knows that 26 books weigh 41 lbs. how much do 40 books weigh?

Which equation represents a line that passes through the point (9, -4) and has a slope of 3/5?