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bezimeni [28]
3 years ago
12

50 POINTS!!!!!!!!!Catherine finds that in a randomly selected sample of 500 families in her home town, 45% own at least one comp

uter. Her research shows that there are a total of 35,000 families in her town.
Which statements are true?

Select each correct answer.


To estimate the percentage well, she would need to collect data for all 35,000 families.

Since her sample was randomly selected, she can reasonably infer that about 45% of the 35,000 families in her town own at least one computer.

If she collected data for a random sample of 1000 families in her home town, then that percentage would be a better estimate for the percentage of all 35,000 families that own a computer.

Since her sample was only 500 families, it is not possible that the percentage is a good estimate for the percentage of all 35,000 families that own a computer.
Mathematics
2 answers:
ANTONII [103]3 years ago
4 0
Yes, A is the most likely answer for this question . It gives the best explanation to the question and can be summarized in an easy fashion.
MissTica3 years ago
3 0
A IS THE Correct awncer !!!!!!!!!!!!!!
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Answer:

solve for x in the second equation is correct

Step-by-step explanation:

Here is the complete question

Which first step for solving the given system using substitution results in an equation without fractions?

(2x+6y=7

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Solve for x in the first equation,

Solve for y in the first equation,

Solve for x in the second equation

The best equation to she will be equation 2 since all the coefficients are end numbers

Let us make x t subject f the formula from equation 2;

From 2: 6x+18y = 24

Subtract 18y from both sides

6x+18y-18y = 24-18y

6x = 24-18y

Divide through by 6

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5 0
3 years ago
Read 2 more answers
What is the domain and range of each function
yKpoI14uk [10]

Answer:

1. Domain: (3, 5, 7, 8, 11)  

Range: ( 6, 7, 9, 14)

2. Domain: (-3, -1, 2, 5, 7)  

Range: (-7, -5, -4, 5, 9)

Step-by-step explanation:

The domain is the set of all x values in the function. The range is the set of all y values in the function. It is written in parenthesis from least to greatest. Do not repeat values even if the function has them more than once.

1. Domain: (3, 5, 7, 8, 11)  

Range: ( 6, 7, 9, 14)

2. Domain: (-3, -1, 2, 5, 7)  

Range: (-7, -5, -4, 5, 9)

6 0
3 years ago
3 1/7 + 4 3/14 = ?<br>plz help me ​
ale4655 [162]
Convert the mixed numbers to improper fractions, then find the LCD and combine.
Exact Form:
103/14
Decimal Form:
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7.35714285
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Mixed Number Form:
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4 0
2 years ago
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6 0
3 years ago
!*I NEED HELP AND QUICK*!
rewona [7]
1)96/8=12
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11 1/2

3) (11 1/2)*12 area of the one  type of the wall, there are 2 such walls
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3 years ago
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