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zvonat [6]
3 years ago
15

A bookshelf contains 10 mysteries, 8 biographies, and 6 science fiction books. A book is randomly selected, replaced, then anoth

er is selected. Find the probability, P(biography, then science fiction) as a simplified fraction
Mathematics
1 answer:
Pachacha [2.7K]3 years ago
6 0

Answer:

Biography= 8/24= 1/3

Science Fiction= 6/24= 1/4

Step-by-step explanation:

The probability for biography is (biography/total amount of books.)

8/24= 1/3

The probability for science fiction is (science fiction/ total amount of books.)

6/24= 1/4

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Answer:

M equals 9.3

Step-by-step explanation:

To get m alone add 4.2 to each side

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2 years ago
Listed below are the ACT scores of 40 randomly selected students at a major university. (Use technology if you wish, Excel) 18 1
tiny-mole [99]

Answer:

A) See the picture

B) 14

C) 45%

Step-by-step explanation:

A) To create a histogram like the one on the picture you can use an online tool like socscistatistics where the number of classes is customizable

B) Because the question B and C have to be responded using a frequency table with 8 classes the answer is 14; the method of using cumulative frequency tables should only be considered as a way of estimation, that is because you obtain values that depend on your choice of class intervals. The way to get a better answer would be to use all the scores in the distribution

Pc1 = 100*(4/40) = 10

Pc2 = 100*(4/40) = 10

Pc3 = 100*(3/40) = 7.5

Pc4 = 100*(11/40) = 27.5

Pc5 = 100*(5/40) = 12.5

Pc6 = 100*(4/40) = 10

Pc7 = 100*(7/40) = 17.5

Pc8 = 100*(2/40) = 5

Pc8 + Pc7 + Pc6 + Pc5 + Pc4 + Pc3 + Pc2 = 90%

Therefore, From class 8 to class 2 is the top 90% of the applicants and the minimum score is 14.

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5 0
3 years ago
Explain how multiplying with 6 is like multiplying with 3
Advocard [28]
It is like multiplying by 3 but all you are doing is doubling the numbers

hopefully you get this
5 0
3 years ago
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Solving for y in this problem.
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y = 5x-2

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Multiply each side by -1

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7 0
3 years ago
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Ron works at the local bookstore for an hour every day. He earns $5 daily from this job. If he adds this amount to his daily all
eimsori [14]
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The equation is true when we plug 5 in for x. So, x=5 and therefore Ron’s daily allowance is $5.

7(5+5) = 70
7(10) = 70
70 = 70 ✔️

7(10+5) = 70
7(15) = 70
105 = 70 ❌

7(15+5) = 70
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7(20+5) = 70
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8 0
1 year ago
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