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wolverine [178]
3 years ago
6

I NEED HELP ASAP Catherine finds that in a randomly selected sample of 500 families in her home town, 45% own at least one compu

ter. 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:
EastWind [94]3 years ago
6 0
A is the correct answer
Nezavi [6.7K]3 years ago
5 0

Answer:

c and d

Step-by-step explanation:

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-16 (t+3) (t-3)

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(−2k <br> 3<br> −7k <br> 2<br> +5k)+(6k <br> 2<br> +3k)=
shusha [124]

Answer: 5k +7

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7 0
2 years ago
If 32^2c=8^c what is the value of c? 1 2 3 5
Elina [12.6K]

Answer:

  • as written, c ≈ 0.000979 or c = 4
  • alternate interpretation: c = 0

Step-by-step explanation:

<em>As written</em>, you have an equation that cannot be solved algebraically.

  (32^2)c = 8^c

  1024c = 8^c

  1024c -8^c = 0 . . . . . . rewrite as an expression compared to zero

A graphical solution shows two values for c: {0.000978551672551, 4}. We presume you're interested in c = 4.

___

If you mean ...

  32^(2c) = 8^c

  (2^5)^(2c) = (2^3)^c . . . . rewriting as powers of 2

  2^(10c) = 2^(3c) . . . . . . . simplify

  10c = 3c . . . . . . . . . . . . . .log base 2

  7c = 0 . . . . . . . . . . . . . . . subtract 3c

  c = 0 . . . . . . . . . . . . . . . . divide by 7

7 0
2 years ago
Find the area of the triangle with the given measurements. Round the solution to the nearest hundredth if necessary. . . A = 50°
Ilia_Sergeevich [38]
Area of the triangle:
A = 1/2 · c · b · sin A =
=  1/2 · 30 · 14 · 0.766 ≈ 160.87 ft²
Answer: 160.87 ft²
5 0
3 years ago
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ella [17]
Because empty set has no element which automatically make it a subset of every set. 

Thank you for posting your question here at brainly. I hope the answer will help you. Feel free to ask more questions here.
6 0
3 years ago
Read 2 more answers
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