Mathematics, 31.07.2019 03:00 punchbug007
The five numbers 1, 2, 3, 4, 5 are written respectively on the five disks of the same size and placed in a hat. two disks are drawn without replacement from the hat and the number written on them are observed. list the 10 possible outcomes of this experiment as unordered pairs of numbers. write the outcome in the format such as (1,2) and separate different outcomes by comma or space.
Answers: 2
Mathematics, 21.06.2019 19:50
Prove (a) cosh2(x) − sinh2(x) = 1 and (b) 1 − tanh 2(x) = sech 2(x). solution (a) cosh2(x) − sinh2(x) = ex + e−x 2 2 − 2 = e2x + 2 + e−2x 4 − = 4 = . (b) we start with the identity proved in part (a): cosh2(x) − sinh2(x) = 1. if we divide both sides by cosh2(x), we get 1 − sinh2(x) cosh2(x) = 1 or 1 − tanh 2(x) = .
Answers: 3
Mathematics, 21.06.2019 23:50
Mariah is randomly choosing three books to read from the following: 5 mysteries, 7 biographies, and 8 science fiction novels. which of these statements are true? check all that apply. there are 20c3 possible ways to choose three books to read. there are 5c3 possible ways to choose three mysteries to read. there are 15c3 possible ways to choose three books that are not all mysteries. the probability that mariah will choose 3 mysteries can be expressed as . the probability that mariah will not choose all mysteries can be expressed as 1 −
Answers: 1
Mathematics, 22.06.2019 04:30
Angle m aoc=108° m aob=3x+4° m boc=8x-28° find m aob
Answers: 1
The five numbers 1, 2, 3, 4, 5 are written respectively on the five disks of the same size and place...
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