![Mathematics](/tpl/images/cats/mat.png)
Mathematics, 17.09.2021 01:00, danibe98r
Which property is not used to simplify the following expression?
2 ⋅ (x + 5) + 7x = (2x + 10) + 7x
= (10 + 2x) + 7x
= 10 + (2x + 7x)
= 10 + 9x
= 9x + 10
commutative property of multiplication
associative property of addition
distributive property
commutative property of addition
![answer](/tpl/images/cats/otvet.png)
Answers: 2
Other questions on the subject: Mathematics
![image](/tpl/images/cats/mat.png)
Mathematics, 22.06.2019 04:30, medellincolombia99
Who can me with this algebra for your guys.
Answers: 1
![image](/tpl/images/cats/mat.png)
Mathematics, 22.06.2019 05:00, HealTheWorld
21/2 divided by 3 1/3 = s divided by 4 1/4 . what is s?
Answers: 1
![image](/tpl/images/cats/mat.png)
Mathematics, 22.06.2019 05:10, haileysolis5
What is another way to write the equation 2/3(x+6)=-18?
Answers: 1
![image](/tpl/images/cats/mat.png)
Mathematics, 22.06.2019 07:50, xelynncaldera
Assume the population consists of the values 1, 3, 14. assume samples of 2 values are randomly selected with replacement (see page 23 for a definition) from this population. all the samples of n=2 with replacement are 1 and 1, 1 and 3, 1 and 14, 3 and 1, 3 and 3, 3 and 14, 14 and 1, 14 and 3, and 14 and 14. for part a) of this project, find the variance σ2 of the population {1, 3, 14}. for part b) of this project, list the 9 different possible samples of 2 values selected with replacement, then find sample variance s2 (which includes division by n-1) for each of them, and finally find the mean of the sample variances s2. for part c), for each of the 9 different samples of 2 values selected with replacement, find the variance by treating each sample as if it is a population (using the formula for population variance, which includes division by n), then find the mean of those population variances. for part d), which approach results in values that are better estimates of σ2 from part a): part b) or part c)? why? when computing variances of samples, should you use division by n or n-1? upload your answers for a), b), c), and d). the preceding parts show that s2 is an unbiased estimator of σ2. is s and unbiased estimator of σ? the above problem is from triola’s essentials of statistics, 4th edition.
Answers: 2
Do you know the correct answer?
Which property is not used to simplify the following expression?
2 ⋅ (x + 5) + 7x = (2x + 10) + 7x...
Questions in other subjects:
![Konu](/tpl/images/cats/mat.png)
![Konu](/tpl/images/cats/mat.png)
![Konu](/tpl/images/cats/mat.png)
Mathematics, 06.07.2021 04:10
![Konu](/tpl/images/cats/mat.png)
Mathematics, 06.07.2021 04:10
![Konu](/tpl/images/cats/obshestvoznanie.png)
![Konu](/tpl/images/cats/istoriya.png)
![Konu](/tpl/images/cats/biologiya.png)
![Konu](/tpl/images/cats/informatica.png)
Computers and Technology, 06.07.2021 04:10
![Konu](/tpl/images/cats/mat.png)
![Konu](/tpl/images/cats/mat.png)
Mathematics, 06.07.2021 04:10