rodrickahammonds
13.07.2019 •
Mathematics
The graph shows the number of each kind of book in hero's personal library. a book is chosen randomly. what is the probability that the book chosen is a biography? a)2/15 b)4/15 c)1/30 d)1/4
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Ответ:
From the graph, it is found that there is a
probability that the book chosen is a biography, and the correct option is given by option A.
A probability is given by the number of desired outcomes divided by the number of total outcomes.In this problem:
There are 4 + 2 + 10 + 14 = 30 books in the hero's library.Of those, 4 are biographies.Thus:
A similar problem is given at link
Ответ:
A is the right answer .Probability of the book chosen is a biography is
.
Step-by-step explanation:
According to the given graph or pie chart
The number of biography books=4
Total books= Romance books+ Science fiction books+ Biography books+Adventure books =2+14+4+10=30
Let B be the event of choosing a biography book then
Probability of the book chosen is a biography P(B)=
Therefore, Probability of the book chosen is a biography is
.
Ответ:
3x+3y= total number of fruit.
Step-by-step explanation:
Based on Gretchen's method.