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3 years ago

If y − 3 = 3x, which of the following sets represents possible inputs and outputs of the function, represented as ordered pairs?

Mathematics

1 answer:

mario62 [17]3 years ago

8 0

Answer:

The first chocie (0,3), (1,6), (2,9)

Step-by-step explanation:

Just plug each point into the equation and see if it is correct.

y-3 = 3x

for (0,3) --> 3-3=3(0) -->0 = 0 true

for (1,6) --> 6-3 = 3(1) --> 3=3 true

fpr (2,9) -->9-3 = 3(2) --> 6=6 true

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Scores on the math portion of the SAT are believed to be normally distributed and range from 200 to 800. A researcher from the a

Doss [256]

Using the z-distribution, it is found that she should take a sample of 46 students.

<h3>What is a z-distribution confidence interval?</h3>

The confidence interval is:

$\overline{x} \pm z\frac{\sigma}{\sqrt{n}}$

The margin of error is:

$M = z\frac{\sigma}{\sqrt{n}}$

In which:

$\overline{x}$ is the sample mean.

z is the critical value.

n is the sample size.

$\sigma$ is the standard deviation for the population.

In this problem, we have a 95% confidence level, hence $\alpha = 0.95$ , z is the value of Z that has a p-value of $\frac{1+0.95}{2} = 0.975$ , so the critical value is z = 1.96.

Scores on the math portion of the SAT are believed to be normally distributed and range from 200 to 800, hence, by the Empirical Rule the standard deviation is found as follows:

$6\sigma = 800 - 200$

$6\sigma = 600$

$\sigma = 100$

The sample size is n when M = 29, hence:

$M = z\frac{\sigma}{\sqrt{n}}$

$29 = 1.96\frac{100}{\sqrt{n}}$

$29\sqrt{n} = 196$

$\sqrt{n} = \frac{196}{29}$

$(\sqrt{n})^2 = \left(\frac{196}{29}\right)^2$

n = 45.67.

Rounding up, a sample of 46 students should be taken.

More can be learned about the z-distribution at brainly.com/question/25890103

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4 0

2 years ago

Write 43.78 in word form

Arisa [49]

<em>In word form Four Thousand AND Seventy - eight </em>

7 0

3 years ago

Read 2 more answers

I HAVE ANOTHER CLASS TOMORROW AND NEED TO FINISH IT RIGHT NOW (MAYBE 20 MIN MAX) SOMEBODY PLEASE HELP, ME! ANY ANNOYING OR FAKE

neonofarm [45]

Answer:

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Step-by-step explanation:

3 x 7+x is 69420 so thats the answer ez

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2 years ago

All the real square roots of 144.

Monica [59]

Answer:

So the set of all real square roots of -144 is the empty set. The imaginary square roots are i12 and -i12.

Step-by-step explanation:

hopefully that helps you

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4 years ago

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How to determine if set of vectors is linearly independent?

zimovet [89]

The vectors $\{v_1,v_2,...,v_p\}\in \mathbb{R}^n$ are linearly independent if the ONLY solution to the following equation:

$c_1v_1+c_2v_2+...c_pv_p=0$

is $c_1=c_2=...=c_p=0$

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3 years ago