I don’t understand this

Mathematics

2 answers:

sattari [20]3 years ago

6 0

it is irrational because it is the square root of a number.

Natalka [10]3 years ago

5 0

√7 is not a perfect square , so it's irrational

Answer is B. irrational numbers

P.S .

Keep in mind that any of non perfect square is irrational

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In a Harris poll of 514 human resource professionals, 90% said that the appearance of a job applicant is most important for a go

Licemer1 [7]

Answer: The interval is 0.9 ± 0.0259 and margin of error is 0.0259

Step-by-step explanation: Confidence interval for a proportion in one sample is the estimate of the proportion of a population. It is calculated following the next steps:

1) Find the proportion $p=\frac{x}{n}$ , in which x is the number of people with the desired condition. In our case, p=0.9;

2) Calculate margin of error, i.e.:

$z\sqrt{\frac{p(1-p)}{n}}$

z is z-score, which for a 95% confidence, equals 1.96;

Substituting with the data given:

$1.96(\sqrt{\frac{0.9(1-0.9)}{514}})$ = 0.0259

3) Write: p ± $z\sqrt{\frac{p(1-p)}{n}}$

In our case, the interval will be 0.9 ± 0.0259.

Margin of error is the random sampling error in the results of a survey, i.e.,it shows you how far your result will be from the real value. For the Harris poll, margin of error is 0.0259

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3 years ago

15% of 60 is what percent of 180?

aivan3 [116]

Okay so uh i think it’s this: 15% of 60=0.15* 60=9
9 is what percent of 180 i think..?
9/180=1/20=5/100=5%

7 0

3 years ago

Read 2 more answers

What is - 3/4 x ( -12 ) please i need this by today

S_A_V [24]

-12 x -12 = 144 I’m pretty sure if not then it is something different

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