Abag contains 11 black and 21 gray marbles. a marble is drawn at random. what is the theoretical probability of not drawing a gray marble? p(not gray) =

Geometry: determine whether segment mn is parallel to segment kl. justify your answer. jm 6 mk 3 jn 8 nl 4

What situation is an example of an observational study

Fanny mendelssohn manages all the magazines and paperback books at a local grocery store. she prices many paperbacks to sell at $7.99. the cost to the store is $5.29. what is the markup rate on a paperback book, based on its cost?