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3 years ago

PLEASE HELP ME BRO

Mathematics

2 answers:

Sav [38]3 years ago

7 0

The answer is D. 27
54 divided by 2 is 27

Tema [17]3 years ago

7 0

Answer:

the answer is b)3

Step-by-step explanation:

2=36

?(x)=54

2×54=36x

108/36=x

x=3

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Answer:

Step-by-step explanation:

If you want to factor this, you have to use the quadratic formula to do so.

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For us, it looks like this:

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which simplifies to

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Since it breaks every mathematical rule to have a negative number under an even index radical, we have to deal with that using the imaginary "i". You should know at this point that $i^2=-1$

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3 years ago

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2 years ago

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Eva8 [605]

Answer:

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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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So $\alpha = 0.1$ , z is the value of Z that has a pvalue of $1 - \frac{0.1}{2} = 0.95$ , so $Z = 1.645$ .

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