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Mnenie [13.5K]
3 years ago
13

(9, 2) and (3,-5). find the distance between the points

Mathematics
1 answer:
adell [148]3 years ago
6 0

Answer:

Is the slopes your doing

Step-by-step explanation:

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5(x+6)-2x=3(x+10) solve for x
Drupady [299]

Answer:

x=all real numbers

Step-by-step explanation:

1. distribute: 5(x+6)-2x=3(x+10)

                      5x+30-2x=3x+30

2. combine like terms 3x+30=3x=30

3. these are equal therefore x=all real numbers

6 0
2 years ago
Read 2 more answers
What is 3.4- -6 -2.5 ?
Arturiano [62]

Answer:

6.9 I think.

Step-by-step explanation:

3 0
3 years ago
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Plz help me will give brainlest I hate my <br>math teacher and the ones I need help with are 3-7
victus00 [196]
I can't do 3 and 4 for you but I can do 5 6 and 7.


5. Hotel B

6. Hotel B

7. Hotel A
-There are fewer values in the dataset
- In general, the values seem to increase in intervals of 20

3 0
3 years ago
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Assume that a computer was used to generate the given confidence interval for the population mean. Find the sample mean or margi
stealth61 [152]

Answer:

The sample mean is

b.3.55

The margin of error is

0.32

Step-by-step explanation:

Deep explanation about a confidence interval

We have that to find our \alpha level, that is the subtraction of 1 by the confidence interval divided by 2. So:

\alpha = \frac{1-0.9}{2} = 0.05

Now, we have to find z in the Ztable as such z has a pvalue of 1-\alpha.

So it is z with a pvalue of 1-0.05 = 0.95, so z = 1.645

Now, find M as such

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

In which \sigma is the standard deviation of the population and n is the size of the sample.

M = 1.645*215 = 353.675

The lower end of the interval is the mean subtracted by M. So it is 6.4 - 0.3944 = 6.01 hours.

The upper end of the interval is the mean added to M. So it is 6.4 + 0.3944 = 6.74 hours.

In this problem:

The deep explanation is not that important.

We just have to recognize that the interval has a lower end and an upper end. The distance from both the upper and the lower end to the mean is M. This means that the sample mean is the halfway point between the lower end and the upper end.

The margin of error is the distance of these two points(lower and upper end) to the mean.

In our interval

Lower end: 3.23

Upper end: 3.87

Sample mean

M = \frac{3.23 + 3.87}{2} = 3.55

So the correct answer is:

b.3.55

The margin of error is

3.87 - 3.55 = 3.55 - 3.23 = 0.32

4 0
3 years ago
A circle has a diameter of 18 mm. What is its circumference?
Sloan [31]

Answer:

56.52mm

Step-by-step explanation:

4 0
2 years ago
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