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rusak2 [61]
2 years ago
6

What is the distance, in a radical form, between the points (5,-6) and (2,5).

Mathematics
1 answer:
iogann1982 [59]2 years ago
4 0

Answer:

L²=(x1-x2)²+(y1-y2)²

L2=(5-2)²+(-6-5)²

L²=3²+(-11)²

L²=9+121

L²=130

L=✔130

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Given that a 90% confidence interval for the mean height of all adult males in Idaho measured in inches was [62.532, 76.478]. Us
grigory [225]

Answer:

The confidence interval on this case is given by:

\bar X \pm z_{\alpha/2}\frac{\sigma}{\sqrt{n}} (1)

For this case the confidence interval is given by (62.532, 76.478)[/tex]

And we can calculate the mean with this:

\bar X = \frac{62.532+76.478}{2}= 69.505

So then the mean for this case is 69.505

Step-by-step explanation:

Previous concepts

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".  

A confidence interval is "a range of values that’s likely to include a population value with a certain degree of confidence. It is often expressed a % whereby a population means lies between an upper and lower interval".

\bar X represent the sample mean  

\mu population mean (variable of interest)  

\sigma represent the population standard deviation  

n represent the sample size  

Assuming the X follows a normal distribution  

X \sim N(\mu, \sigma)

The confidence interval on this case is given by:

\bar X \pm z_{\alpha/2}\frac{\sigma}{\sqrt{n}} (1)

For this case the confidence interval is given by (62.532, 76.478)[/tex]

And we can calculate the mean with this:

\bar X = \frac{62.532+76.478}{2}= 69.505

So then the mean for this case is 69.505

5 0
3 years ago
4^7 x 4^-5 .........
Aleks04 [339]

Answer:

16

hope it helps :)).....

<h3> </h3>
7 0
2 years ago
Read 2 more answers
Plzzzzzzzzzzzzzzzzzzzzzz find the hcf of 15a²b² and -24ab
Ad libitum [116K]

Let's take a look at each term separately.

15a^2b^2:

15 has factors 1, 3, 5, 15

a x a

b x b

-24ab

-24 has factors 1, 2, 3, 4, 6, 8, 12, 24

a

b

Now, we can see what each of these terms has in common. Both have a 3 in their factor lists, as well as one a and one b.

Therefore, the greatest common factor is 3ab.

Hope this helps!! :)

7 0
3 years ago
Read 2 more answers
Giving Brainliest!! 1.The number of new boats sold at a boat dealership in a given week (1 point)
aniked [119]
1. is Quantitative/continuous. (C)
2. is Qualitative/ordinal. (B.)
3. is <span>Qualitative/ordinal (B.)
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4 0
3 years ago
2 Points
In-s [12.5K]

Answer:

D. -3

Step-by-step explanation:

The table is:

x  |  y

-5 | 23

-2 | 14

 1 | 5

To find the slope, you need two points (x1, y1) and (x2, y2) and the next formula:

slope = (y2 - y1)/(x2 - x1)

Using (-2, 14) and (1, 5) (other combinations are also possible) the slope is:

slope = (5 - 14)/(1 - (-2)) = -3

8 0
3 years ago
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