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lukranit [14]
2 years ago
10

Britany wants to read a book. In her room, she has 5 mysteries, 15 historical fictions, 12 modern fantasies, and 7 blographies.

how many different choices are available ?
a. 78
b. 34
c. 32
d.39
Mathematics
1 answer:
Leno4ka [110]2 years ago
6 0

<em>Answer</em>

<em>I </em><em>guess</em>

<em>3</em><em>9</em><em> </em><em>different</em><em> </em><em>choice</em><em> </em><em>are </em><em>available</em>

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Suppose the population of IQ scores in the town or city where you live is bell-shaped, with a mean of 104 and a standard deviati
SVEN [57.7K]

Answer:

The mean of samples of 100 IQ scores taken out from this population will have a distribution with mean M=104 and standard deviation s=3.5.  

Step-by-step explanation:

We know the population mean and standard deviation, that has a bell-shaped distribution:

\mu=104\\\\\sigma=35

The sampling distribution, the distribution of the mean of samples of size n out of this population, will have the same mean as the population mean.

\mu_M=\mu=104

The standard deviation will be related to the population standard deviation and the sample size as:

\sigma_M=\frac{\sigma}{\sqrt{N}} =\frac{35}{\sqrt{100}}=3.5

Then, the mean of samples of 100 IQ scores taken out from this population will have a distribution with mean M=104 and standard deviation s=3.5.  

6 0
3 years ago
Ramon earns $1,735 each month and pays $53.10 on electricity. To the nearest tenth of a percent, what perfect of ramons earnings
Alenkinab [10]

Answer:

\boxed{3.1 \, \%}

Step-by-step explanation:

The formula for calculating percentage is

\text{Percentage} = \dfrac{\text{Part}}{\text{Whole}} \times 100 \, \%

The "part" is the electricity payment.

The "whole" is Ramon's earnings.

\begin{array}{rcl}\text{\% of earnings} & = & \dfrac{53.10}{1735} \times 100 \, \% \\\\& = & \mathbf{3.1 \, \%}\\\end{array}\\\boxed{\mathbf{3.1 \, \%}} \text{ of Ramon's earnings are on electricity}

5 0
3 years ago
Which names accurately describe figure PQRS? Select three options.
kobusy [5.1K]

Answer:

parallelogram

Step-by-step explanation:

four sided and parallel

7 0
3 years ago
What is 3 1/6 + 2 5/6
Feliz [49]

The answer you are looking for is 6.

To find this answer, you first add 1/6 and 5/6. Adding them together will give you 6/6 or 1. Next, you add all the whole numbers together. 3 + 2 + 1 = 6. Thus making 6 your answer.

I hope this helps!

4 0
3 years ago
Read 2 more answers
Which set of angle measures could be the interior angles of a triangle?
andriy [413]

Answer:

d. 15, 30, 135

Step-by-step explanation:

A triangle's interior angles on a flat surface add up to 180 degrees.

a. 90 * 3 = 270 != 180

b.(80 * 2) + 200 = 360 != 180

c.40 + 50 + 60 = 160 != 180

d.15 + 30 + 135 = 45 + 135 = 180, so it has to be d.

5 0
3 years ago
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