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3 years ago

Cho hàm số 2 2 3 1 2 ( )

Mathematics

1 answer:

Nesterboy [21]3 years ago

3 0

Answer:

Step-by-step explanation:

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Calculate the input when the output is n

ozzi

Answer:

You didn't post an image.

Step-by-step explanation:

6 0

2 years ago

I have the first part down, but I don't understand how to solve. It's an inequality.

Anna71 [15]

Answer:

As shown in your game, you have an inequality:

2.5 x h + 10.9 > 33.4

=> 2.5 x h > 33.4 - 10.9

=> 2.5 x h > 22.5

=> h > 22.5/2.5

=> h > 9

Hope this helps!

8 0

3 years ago

An engineer wishes to determine the width of a particular electronic component. If she knows that the standard deviation is 1.6

nexus9112 [7]

Answer:

n=1705

Step-by-step explanation:

The margin of error is the range of values below and above the sample statistic in a confidence interval.

Normal distribution, is a "probability distribution that is symmetric about the mean, showing that data near the mean are more frequent in occurrence than data far from the mean".

Assuming the X follows a normal distribution

$X \sim N(\mu, \sigma=1.6)$

And the distribution for $\bar X$ is:

$\bar X \sim N(\mu, \frac{1.6}{\sqrt{n}})$

We know that the margin of error for a confidence interval is given by:

$Me=z_{\alpha/2}\frac{\sigma}{\sqrt{n}}$ (1)

The next step would be find the value of $\z_{\alpha/2}$ , $\alpha=1-0.99=0.01$ and $\alpha/2=0.005$

Using the normal standard table, excel or a calculator we see that:

$z_{\alpha/2}=\pm 2.58$

If we solve for n from formula (1) we got:

$\sqrt{n}=\frac{z_{\alpha/2} \sigma}{Me}$

$n=(\frac{z_{\alpha/2} \sigma}{Me})^2$

And we have everything to replace into the formula:

$n=(\frac{2.58(1.6)}{0.1})^2 =1704.03$

And if we round up the answer we see that the value of n to ensure the margin of error required $\pm=0.1$ mm is n=1705.

6 0

3 years ago

What is 3/5 of 1800

natali 33 [55]

Answer:

1080

Step-by-step explanation:

first do 3 times 1800, because they are both the numerators. Then divide that number, which is 5400, by the denominator: 5. You will get 1080.

7 0

3 years ago

un carpintero tiene un listón de 12metros de longitud. quiere dividirlo en trozos iguales que midan siempre un numero exacto de

san4es73 [151]

Answer:

Step-by-step explanation:

6 metros multiplicado por 2 metros o 3 metros multlipicado 4 metros

5 0

3 years ago

Read 2 more answers