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kkurt [141]
4 years ago
15

The graph shows the number of each kind of book in Hero's personal library. A book is chosen randomly. What is the probability t

hat the book chosen is a biography?
A)2/15
B)4/15
C)1/30
D)1/4

Mathematics
2 answers:
Tresset [83]4 years ago
7 0

Answer: A is the right answer .Probability of the book chosen is a biography is \frac{2}{15}.


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)==\frac{biography\ books}{total\ books}=\frac{4}{30}=\frac{2}{15}

Therefore, Probability of the book chosen is a biography is  \frac{2}{15}.

VMariaS [17]4 years ago
5 0
14 science fiction, 2 romance, 4 biography, 10 adventure...total of 30 books

P(biography) = biographies / total books = 4/30 which reduces to 2/15 <=
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The perimeter of a rectangle is 120 inches. The length is 10 more than the width. Find the length and width
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The formula of a perimeter of a rectangle:

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Substitute

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Answer:

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Step-by-step explanation:

  1. The lengths of the sides of a 30-60-90 triangle are in the ratio 1:2:√3.
  2. The lengths of the sides of a 45-45-90 triangle are in the ratio 1 : 1 : √2
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