Marcos found a challenge involving square roots knowing that he solved correctly the answer given by marcos √81 + √49 -√100 a) 1 b) 2 c) 3 d) 4 e) 5

Which equations represents circles that have a diameter of 12 units and a center that lies on the y-axis? check all that apply

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

Express the following as a function of a single angle. cos(60) cos(-20) - sin(60) sin(-20)