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rafamoreura
15.04.2020 •
Mathematics
Plz again missing homework another question
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Ответ:
C- 1/5
Step-by-step explanation:
You can multiply straight across, and negative * negative = positive, so-
-1/3*-3/5=3/15
3/15 simplifies to 1/5
Hope this helps!
Ответ:
A) The probability that all nationalities are represented is 0.5%.
B) The probability that all nationalities except Italian are represented is 7%.
Given that a foreign student club lists as its members 2 Canadians, 3 Japanese, 5 Italians, and 2 Germans, if a committee of 4 is selected at random, to fi nd the probability that (A) all nationalities are represented; (B) all nationalities except Italian are represented; the following calculations must be performed:
2 + 3 + 5 + 2 = 12
2/12 x 3/11 x 5/10 x 2/9 = X 0.0050 = X 0.0050 x 100 = 0.5Therefore, the probability that all nationalities are represented is 0.5%.
7/12 x 6/11 x 5/10 x 4/9 = X 0.070 = X 0.070 x 100 = 7In turn, the probability that all nationalities except Italian are represented is 7%.
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