Mathematics, 24.10.2020 01:00 marabic22
Melissa ran m meters per second, and Jasmine ranj meters per second. They
ran for t seconds. The expression t(m - j) describes how many more meters
Melissa ran than Jasmine ran during that time. We can also use the expression
tm - tj to represent the same quantity.
Explain how the expressions t(m-j) and - tj are equivalent
Answers: 2
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 00:00
The function y= x - 4x+ 5 approximates the height, y, of a bird, and its horizontal distance, x, as it flies from one fence post to another. all distances are in feet. complete the square to find and interpret the extreme value (vertex). select two answers: one extreme value and one interpretation.
Answers: 2
Mathematics, 22.06.2019 04:00
Awoman won a 4000-m race with a time of 12.089 min. what was her rate?
Answers: 1
Melissa ran m meters per second, and Jasmine ranj meters per second. They
ran for t seconds. The ex...
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