Mathematics, 02.08.2019 16:00, samone26
Matthew is 3 times as old as jenny. in 7 years, he will be twice as old as she will be then. how old is each now?
Answers: 1
Mathematics, 21.06.2019 21:30, BakerElsie02
Joe has a rectangular chicken coop. the length of the coop is 4 feet less than twice the width. the area of the chicken coop is 510 square feet. what is the length of the chicken coup?
Answers: 3
Mathematics, 21.06.2019 23:30, bbby2
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
Matthew is 3 times as old as jenny. in 7 years, he will be twice as old as she will be then. how old...
Mathematics, 26.01.2021 01:10
Mathematics, 26.01.2021 01:10
Mathematics, 26.01.2021 01:10
Mathematics, 26.01.2021 01:10
Mathematics, 26.01.2021 01:10
Mathematics, 26.01.2021 01:10
Mathematics, 26.01.2021 01:10
Mathematics, 26.01.2021 01:10