Which statement explains how you could use coordinate geometry to prove that quadrilateral ABCD is a parallelogram? A. Prove that all sides are congruent and have slopes that are opposite reciprocals. B. Prove that segments AD and AB are congruent and parallel. C. Prove that opposite sides are congruent and have equal slopes. D. Prove that segments BC and CD are congruent and parallel.

(least common multiples) the answer that i had in the 1st step was lcm of airline tickets sold=72. idk if that even matters but just in case. ! three co-workers are busy selling airline tickets over the phone. in an 8-hour day, charles can sell 8 airline tickets, ann can sell 9 airline tickets, and michelle can sell 6 airline tickets. step 2 of 2: what is the smallest number of 8-hour days needed for each of them to achieve the same number of sales? it takes charles . it takes . it takes .

What statement is true? 2x^2-9x+2=-1

1) what is the measure of the exterior angle, ∠uvw ? 2) in triangle man, what is the measure of the exterior angle at n (in degrees)?