3 years ago

About what percent of Audra's example of six-grade students have 10 or more cousins?

Mathematics

2 answers:

Ymorist [56]3 years ago

7 0

C. This is because 25 / 95 = x / 100. 2500 / 95 = 26. 31 which rounds tp 26% :)

Please leave brainiest

SCORPION-xisa [38]3 years ago

6 0

The answer to your question is C 26%

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kotegsom [21]

Ten=ten

Explain: you just explained it .

8 0

3 years ago

the line -6+2y=10 is written in standard form. can you tell what the growth of the line is?Its y-intercept?

slamgirl [31]

Answer:

Growth: 3

y-intercept: 5

Step-by-step explanation:

1. Find the equation in slope-intercept form:

-6x+2y=10

2y=6x+10

y=3x+5

2. Then we can easily identify the growth and y-intercept.

Growth: 3

y-intercept: 5

6 0

3 years ago

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A class survey in a large class for first-year college students asked, “About how many minutes do you study on a typical weeknig

Anika [276]

Answer: (110.22, 125.78)

Step-by-step explanation:

The confidence interval for the population mean is given by :-

$\mu\ \pm z_{\alpha/2}\times\dfrac{\sigma}{\sqrt{n}}$

Given : Sample size = 463

$\mu=118\text{ minutes}$

$\sigma=65\text{ minutes}$

Significance level : $\alpha=1-0.99=0.01$

Critical value : $z_{\alpha/2}=z_{0.005}=\pm2.576$

We assume that the population is normally distributed.

Now, the 90% confidence interval for the population mean will be :-

$118\ \pm\ 2.576\times\dfrac{65}{\sqrt{463}} \\\\\approx118\pm7.78=(118-7.78\ ,\ 118+7.78)=(110.22,\ 125.78)$

Hence, 99% confidence interval for the mean study time of all first-year students = (110.22, 125.78)

3 0

3 years ago

Determine the value of a + b in the system of equations below. <br><br> 5a + 4b = 22<br> 7a-b= 11

dexar [7]

Answer:

We have a + b as;

2 + 3 = 5

Step-by-step explanation:

Here, we want go get the value of a and b

from the second equation, we can get an expression for b

We have this as;

7a - b = 11

Thus,

b = 7a - 11

Now, from here, we can substitute the value of b into the first equation

We have this as;

5a + 4(7a - 11) = 22

5a + 28a -44 = 22

33a = 22 + 44

33a = 66

a = 66/33

a = 2

Recall;

b = 7a - 11

substituting the value of a from above;

b = 7(2) - 11

b = 14 - 11

b = 3

6 0

3 years ago

Each of the following correctly match an English phrase with a mathematical expression except _____. a number times seven, 7x a

kobusy [5.1K]

Answer:

D, a number divided by 7

3 0

3 years ago

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