Mathematics, 01.11.2019 02:31 nevaehbell30
Each question on a multiple-choice exam has four choices. one of the choices is correct, worth four points. another choice is wrong but carries partial credit of one point. the other two choices are wrong and worth negative one point. if a student picks answers at random, what is the expected value of his or her score for a problem?
a 0.75
b 0.25
c 1.25
d 1.50
Answers: 2
Mathematics, 21.06.2019 15:00
1. are the triangles similar and if so why? what is the value of x? show your work.
Answers: 2
Mathematics, 21.06.2019 17:30
X-intercept=-5 y-intercept=2 the equation of the line is
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Mathematics, 21.06.2019 20:30
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.
Answers: 2
Each question on a multiple-choice exam has four choices. one of the choices is correct, worth four...
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