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ioda
3 years ago
5

Select the expression that represents the following statement: multiply the difference of 5 and 2 by 7, and then add 6.

Mathematics
1 answer:
kondor19780726 [428]3 years ago
7 0

Answer:

27

Step-by-step explanation:

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A town council wants to conduct a survey on town policies using a random sample of residents.
Verizon [17]

Answer:

C. Draw slips of paper with names of residents out of a large box.

Step-by-step explanation:

c is the only one where the results are truly random

sorry don't really know how to explain it rather than looking at the definition

3 0
3 years ago
Read 2 more answers
As discussed in Exercise 6.10, the General Social Survey reported a sample where about 61% of US residents thought marijuana sho
Maslowich

Answer: 2285

Step-by-step explanation:

Formula to find the sample size is given by :-

n=p(1-p)(\dfrac{z_c}{E})^2

, where p = prior estimate of population proportion.

E= Margin of error.

z_c = z-value for confidence interval of c.

Given : Confidence interval : 95%

From the z-value table , the z-value for 95% confidence interval = z_c=1.96

The General Social Survey reported a sample where about 61% of US residents thought marijuana should be made legal.

i.e. the prior estimate of population proportion of US residents thought marijuana should be made legal : p=0.61  

 [∵ sample proportion is the best estimate for population proportion.]

Margin of error : E= 2%=0.02

Now, the required minimum sample size would be :-

n=0.61(1-0.61)(\dfrac{1.96}{0.02})^2

Simplify ,

n=0.2379\times9604=2284.7916\approx2285

Thus , we need to survey <u>2285</u> Americans .

4 0
3 years ago
Find the value of y for the given value of x. Round to the nearest hundredth.
BlackZzzverrR [31]

Answer:

20.922

Step-by-step explanation:

Evaluate ln 7.2 on a calculator; the correct result is 1.974.

Multiply that by 3, obtaining 5.922.

Finally, add 15 to that result:  y = 15 + 3 In 7.2 = 20.922

5 0
3 years ago
Find the sum: 216-36+6-1........+1/7776
NNADVOKAT [17]
185 is the sum of the first part if the question
7 0
3 years ago
How do you describe the solution set to a system of linear inequalities?
Tatiana [17]

Answer:

How do you describe the solution set to a system of linear inequalities?

Step-by-step explanation:

The solutions of a system of linear inequalities are all the ordered pairs that make all the inequalities in the system true.

6 0
2 years ago
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