Adrug trial is testing the effectiveness of two drugs. if 50 patients are given drug a, 20 patients are given drug b, and 100 patients are given a placebo, what is the probability that a patient will not be given a placebo?

Segment xy is dilated through point m with a scale factor of 2. which segment shows the correct result of the dilation

Suppose you just purchased a digital music player and have put 8 tracks on it. after listening to them you decide that you like 4 of the songs. with the random feature on your player, each of the 8 songs is played once in random order. find the probability that among the first two songs played (a) you like both of them. would this be unusual? (b) you like neither of them. (c) you like exactly one of them. (d) redo () if a song can be replayed before all 8 songs are played.

One number is 4 less than 3 times a second number. if 3 more than two times the first number is decreased by 2 times the second number, the result is 11. use the substitution method. what is the first number?