Mathematics, 09.11.2020 20:30 evapoliziani
Terri is playing a math card game and has dealt each player four math cards.
Lisa: 2, √2, -5, 1/2
Ben: 0.435435. . ., 0.5, √25, 0
Kari: π, 2, 6, -2
Terri: √200, π, √50, 1.43256744376665. . .
Which person’s hand contains all rational numbers?
Answers: 1
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
Mathematics, 22.06.2019 00:20
Last week , donnell practiced the piano 3 hours longer than marcus . together, marcus and donnell practiced the piano 11 hours . for how many hours did each young man practiced the piano
Answers: 3
Terri is playing a math card game and has dealt each player four math cards.
Lisa: 2, √2, -5, 1/2
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