Order these numbers from least to greatest. −10.7 , −113 , 10710 , −12011

Answers

Answer 1

Answer: When dealing with negative numbers, the higher the number, the less it is. So, the lowest number is -12,011. Then, it would be -113, -10.7, and finally 10,710 because it is the only positive number. The final order is:

-12,011, -113, -10.7, 10,710

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Which expression is equivalent to -14-(-2)?14-2O 14+20 -14+214-2
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Please Help!?!4. A data set has a variance of 42.

What is the standard deviation of the data set?

Round to the nearest tenth.

Question 5.5. What is the standard deviation of the data set? Round your answer to the nearest tenth.

6 4 9 5 5 4 5

(Points : 1)
1.6
1.7
5.4
5.0

Answers

Answer:

Step-by-step explanation:

(A) It is given that a data set has a variance of 42, then the standard deviation is given as:

$SD=√(variance)$

⇒ $SD=√(42)$

⇒ $SD=6.48$

Thus, the standard deviation of the given data set is 6.48.

(B) The given data set is:

6 4 9 5 5 4 5

Mean of the given data set is:

$Mean=(6+4+9+5+5+4+5)/(7)$

$Mean=(38)/(7)$

$Mean=5.42$

Data set $(x-\overline{x})^2$

6 0.33

4 2.01

9 12.81

5 0.17

4 2.01

5 0.17

The variance is given as:

$V=(0.33+2.01+12.81+0.17+0.17+2.01+0.17)/(7)$

$V=2.52$

Thus, the standard deviation is given as:

$SD=√(variance)$

⇒ $SD=√(2.52)$

⇒ $SD=1.6$

Hence, option A is correct.

Q4 . Standard deviation is square root of variance so, the standard deviation of the given data set is , $\sqrt { 42 }$ which is equal to 6.48074069841

Q5.5

To find the standard variation first find the mean of the set.

6+4+9+5+5+4+5 = 38

$\frac { 38 }{ 7 } =5.42$

Then we will subtract the mean from each number in the set, then will square that. Then we will add those all.

Solution is in the pic. Sorry if this was not explanatory enough.

Ask me if you wanna know more.

3.) Consider the following set of equations:Equation C: y = 2x + 8
Equation D: y = 2x + 2

Which of the following best describes the solution to the given set of equations?
No solution - Is this the answer?
One solution
Two solutions
Infinite solutions

Answers

Yes, the two lines are parallel which makes No solution the correct answer.

the lines are parallel so there is no solution

What does a circle graph show that a bar graph does not?

Answers

It shows ratios of one thing in comparison to another. In this picture it shows favorite pizza toppings. You can easily see ore people like sausage versus any other topping. :)

After college start you start a job earning 38,000 a year. You get a 5% raise each year.A.) Write the first 3 terms of the sequence.
B.) How much will you earn over a 40 year period?
Show all work

Answers

Hi

38000+5%=39900

So 40x5=200
39900+200%=119700

so if he works there for 40yrs he would earn $119700 a yr

119700/12=1641.66667per month

128 is 74% of what number if necessary round your answer to the nearest hundredth

Answers

74% * x = 128
x=128/74%
x=172.97 (nearest hundredth)

Steps:
1. Do a proportion
128/x=74/100
2. Do 128 times 100 which equals 12,800
3. Do 12,800 divided by 74 which equals 172.972
4. If you rounded to the nearest hundreth, your answer would be: 172.97
(Since the 2 after the 7 was below 5, you would round down to 7)

The standard deviation of a sample taken from population A is 17.6 for a sample of 25. The standard deviation of a sample taken from population B is 21.2 for a sample of 30. The standard deviation of the sample mean difference is?

Answers

The answer is 5.5

The standard deviation (sd or σ) of the sample mean difference is:
sd = √(sd₁²/n₁ + sd₂²/n₂)

For the population A:
sd₁ = 17.6
n₁ = 25

For the population B:
sd₂ = 21.2
n₂ = 30

Hence:
sd = √(sd₁²/n₁ + sd₂²/n₂)
= √(17.6²/20 + 21.2²/30)
= √(309.76/20 + 449.44/30)
= √(15.49 + 14.98)
= √(30.47)
= 5.5

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