luhmama

12.03.2020 • 

Mathematics

A personnel director interviewing 12 senior engineers for five job openings has scheduled seven interviews for the first day and five for the second day of interviewing. Assume that the candidates are interviewed in a random order.(a) What is the probability that x of the top four candidates are interviewed on the first day?h(N; 5, 5, 12) h(x; 5, 12, 5) h(N; 7, 12, 5) h(x; 7, 5, 12)(b) How many of the top four candidates can be expected to be interviewed on the first day? (Round your answer to two decimal places.)candidates

Ответ:

kayliejeancost

14.10.2020

Mathematics

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-15+3x-7x=-43
add like terms
3x-7x=-4x
-15-4x=-43
add 15 to both sides
-4x=-28
divide both sides by 4
-x=-7
mulitply -1
x=7

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