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Tatiana [17]
3 years ago
7

How many lines are determind by two points

Mathematics
1 answer:
FromTheMoon [43]3 years ago
5 0

Answer:

1 line is determined by 2 points.

Step-by-step explanation:

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Select the correct answer.
tigry1 [53]

Answer:

We can be 95% certain that the sample mean will fall within $44.87 and $46.93

Step-by-step explanation:

Empirical Rule:

68% of the measures are within 1 standard deviation of the mean.

95% of the measures are within 2 standard deviation of the mean.

99.7% of the measures are within 3 standard deviations of the mean.

Central Limit Theorem:

The Central Limit Theorem estabilishes that, for a normally distributed random variable X, with mean \mu and standard deviation \sigma, the sampling distribution of the sample means with size n can be approximated to a normal distribution with mean \mu and standard deviation s = \frac{\sigma}{\sqrt{n}}.

For a skewed variable, the Central Limit Theorem can also be applied, as long as n is at least 30.

Population:

Mean $45.90, standard deviation $10.31.

Sample:

By the Central limit theorem, mean $45.90, standard deviation s = \frac{10.31}{\sqrt{400}} = \frac{10.31}{20} = 0.5155

Which interval can the branch manager be 95% certain that the sample mean will fall within?

By the Empirical Rule, within 2 standard deviations of the mean. So

45.90 - 2*0.5155 = $44.87

45.90 + 2*0.5155 = $46.93

We can be 95% certain that the sample mean will fall within $44.87 and $46.93

6 0
2 years ago
Read 2 more answers
Find the lateral surface area of this
Yakvenalex [24]

lateral surface area of this cylinder is 1584/7 or 226.28...cm square.

5 0
3 years ago
Read 2 more answers
Is -4 a real or imaginary number?
ryzh [129]

Answer:

Real number

Step-by-step explanation:

Unless it has an i with it then it's an imaginary number but because it doesn't have an i with it it's real

7 0
2 years ago
Read 2 more answers
Giving out 60 points
Yuki888 [10]
If the markers are 4.5 inches away on the map, and 2.5 inches represents 10 miles, then we need to make ratios we can work with.

Inches / Miles: 

4.5 / x
2.5 / 10

Now, we can cross multiply to end up with:

2.5 * x = 4.5 * 10

Simplify:

2.5x = 45

Divide 2.5 on each side:

2.5x / 2.5 = 45 / 2.5

Simplify:

x = 45 / 2.5
x = 18

Awesome! Now we have a real ratio on the real distance of the markers.

<span>2.5 : 10  &  4.5 : </span><span>18.
</span>
18 miles is the actual distance between the two markers.

Hope I could help! If my math is wrong, or it isn't the answer you are looking for, please let me know!
<span>Have a good one!</span>
6 0
3 years ago
Which of the following represents the amount a customer pays including the tip of 15% if the bill was dollars? Select all that a
erastova [34]

Answer:

b+0.15b,     1.15b,           b+ 15/100b

Step-by-step explanation:

i did the test and then it gave me the answer at he end ur welcome

5 0
3 years ago
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