Mathematics, 30.11.2020 22:10 pecanpielover04
Consider (cosine (StartFraction pi Over 2 EndFraction) = I sine (StartFraction pi Over 2 EndFraction) ) and z = 3 (cosine (StartFraction 3 pi Over 2 EndFraction) = I sine (StartFraction 3 pi Over 2 EndFraction) ).. What is w + z expressed in polar form?
Answers: 1
Mathematics, 21.06.2019 15:40
Brian, chris, and damien took a math test that had 20 questions. the number of questions brian got right is 14 more than the number of questions chris got right. damien correctly answered 2 less than the number of questions chris answered correctly. if brian and damien have the same score, which statement is true?
Answers: 1
Mathematics, 21.06.2019 20:00
If the discriminant if a quadratic equation is 4 which statement describes the roots?
Answers: 3
Mathematics, 21.06.2019 23:30
Aprisoner is trapped in a cell containing three doors. the first door leads to a tunnel that returns him to his cell after two days of travel. the second leads to a tunnel that returns him to his cell after three days of travel. the third door leads immediately to freedom. (a) assuming that the prisoner will always select doors 1, 2 and 3 with probabili- ties 0.5,0.3,0.2 (respectively), what is the expected number of days until he reaches freedom? (b) assuming that the prisoner is always equally likely to choose among those doors that he has not used, what is the expected number of days until he reaches freedom? (in this version, if the prisoner initially tries door 1, for example, then when he returns to the cell, he will now select only from doors 2 and 3.) (c) for parts (a) and (b), find the variance of the number of days until the prisoner reaches freedom. hint for part (b): define ni to be the number of additional days the prisoner spends after initially choosing door i and returning to his cell.
Answers: 1
Consider (cosine (StartFraction pi Over 2 EndFraction) = I sine (StartFraction pi Over 2 EndFraction...
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