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agasfer [191]
2 years ago
5

Help me pls . this is alegbra 1

Mathematics
2 answers:
AURORKA [14]2 years ago
8 0

Answer:

x> -14/-3

Step-by-step explanation:

You start with the question -3x+4<-10

this you subtract 4 from both sides, now you have -3x<-14

now you need to isolait x by dividing both by -3x now you have x > -14/-3

I really hope this helps

Vanyuwa [196]2 years ago
6 0

Answer:

8

Step-by-step explanation:

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shusha [124]

Answer:

You must survey 784 air passengers.

Step-by-step explanation:

In a sample with a number n of people surveyed with a probability of a success of \pi, and a confidence level of 1-\alpha, we have the following confidence interval of proportions.

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In which

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The margin of error is:

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Assume that nothing is known about the percentage of passengers who prefer aisle seats.

This means that \pi = 0.5, which is when the largest sample size will be needed.

Within 3.5 percentage points of the true population percentage.

We have to find n for which M = 0.035. So

M = z\sqrt{\frac{\pi(1-\pi)}{n}}

0.035 = 1.96\sqrt{\frac{0.5*0.5}{n}}

0.035\sqrt{n} = 1.96*0.5

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(\sqrt{n})^2 = (\frac{1.96*0.5}{0.035})^2

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