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mariarad [96]
3 years ago
5

The graph shows the number of each kind of book in Hero's personal library. A book is

Mathematics
1 answer:
skelet666 [1.2K]3 years ago
6 0

Answer:

\displaystyle p=\frac{1}{15}

Step-by-step explanation:

<u>Probability</u>

The simple probability of a random event can be calculated as the ratio between the possible favorable cases and the total possible cases.

The pie chart shows the number of books in Hero's library grouped by category.

The total number of books is 14 + 10 + 4 + 2 = 30

The number of romance books is 2

Thus, the probability of randomly choosing a romance book out of the total books is:

\displaystyle p=\frac{2}{30}

Simplifying:

\mathbf{\displaystyle p=\frac{1}{15}}

This corresponds to the first option

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ValentinkaMS [17]
So first you multiply 22 to both sides, which cancels 22 from the left side.


This will leave you with x - 3 = -22


Then you add three to both sides, which cancels -3 from the left side.


This will leave you with x = -22 + 3, also simplified to x = -19


Hope this helps.

-Ruru
5 0
4 years ago
Can someone check this please!?
Ymorist [56]

Answer:

Yes it is correct

Step-by-step explanation:

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2 years ago
HELP ASAP!!!!!!!!!!!!!
Paladinen [302]

Answer:

<h3>              A.   \bold{a_n=-3\cdot\left(\frac18\right)^{n-1}}</h3>

Step-by-step explanation:

\begin{cases}a_1=-3\\a_n=a_{n-1}\cdot\dfrac18\end{cases}\\\\\\a_2=a_{2-1}\cdot\frac18=a_1\cdot\frac18\\\\r=\dfrac{a_2}{a_1}=\dfrac{a_1\cdot\frac18}{a_1}=\dfrac18\\\\\\a_n=a_1\cdot r^{n-1}\\\\a_n=-3\cdot\left(\frac18\right)^{n-1}

3 0
3 years ago
According to a company's website, the top 15% of the candidates who take the entrance test will be called for an interview. You
galben [10]

Answer:

The minimum score required for an interview is 77.252

Step-by-step explanation:

We solve this using z score formula

z = (x-μ)/σ, where x is the raw score, μ is the population mean, and σ is the population standard deviation.

Top 15% of the candidates is a ranking that is equivalent to = 100 - 15% = 85th percentile.

The z score of 85th percentile = 1.036

Mean = 70

Standard Deviation = 7

Minimum score = raw score = ???

Hence:

1.036 = x - 70/7

Cross Multiply

1.036 × 7 = x - 70

7.252 = x - 70

x = 70 + 7.252

x = 77.252

The minimum score required for an interview is 77.252

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3 years ago
Which of the following represents the factorization of the polynomial below?
igor_vitrenko [27]
Answer: A. (2x+3)(x+1)
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