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3 years ago

Find the area of the figure shown below. Use 3.14 for π and round your answer to the nearest hundredth.

Mathematics

2 answers:

topjm [15]3 years ago

5 0

Answer:

ans: 111.54

Step-by-step explanation:

u can simple do by multiple

DaniilM [7]3 years ago

5 0

Answer:

38.24

Step-by-step explanation:

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John traveling to a meeting that is the 28 miles away he needs to be there in 30 min,how fast does he need to go to make it to t

Degger [83]

Answer:

30 mph

Step-by-step explanation:

3 0

2 years ago

A bottle holds 540 milliliter a of liquid. How much is this in ounces? Use the following conversion: 1punce is30 milliliter

kaheart [24]

540mL/30mL=18 ounces

5 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

You discovered 1000 grams of an unknown element called Coolium 23 that has a half life 23 days. How long will it take for you to

Trava [24]

Answer:

13.8 days

Step-by-step explanation:

In this case we can solve it by means of a rule of three, knowing the amount of life for 1000 grams, it must be proportional for 600 grams, like this:

grams days

1000 23

600 x

x = 600 * 23/1000

x = 13.8

which means that for the 600 grams it would be an average life of 13.8 days.

4 0

3 years ago

Which of the following number lines represents the solution set of the inequality -1/3 x + 4 < 3?

natima [27]

Solve for x.
x > 3
(It goes to the right, with the starting point open)

8 0

3 years ago

Read 2 more answers