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nekit [7.7K]
3 years ago
11

Find the domain of f(x). - 3x + 4/9x + 45?

Mathematics
1 answer:
sweet [91]3 years ago
8 0

Answer:

The domain can't be found by this equation u have to look at the question one more time because it should say what it is.

Step-by-step explanation:

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3 years ago
Simplfy 117 over 6.7 please
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Answer:

17.46 or 1170/67

Step-by-step explanation:

Since you can't have a decimal denominator, just multiply it by 10 to make it a whole number.

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svetoff [14.1K]

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4 0
3 years ago
About 5% of hourly paid workers in a regioner the prevailing minimum wage or less A grocery chain offers discount rates to compa
Fed [463]

Answer:

0

Step-by-step explanation:

Let X  to be a random variable that looks a binomial distribution which denoted the number of employees out of the 281 who earn the prevailing minimum wage or less

The sample size n = 281

The population parameter p = 5% = 0.05

Using normal approximation for the mean.

\mu = np

\mu = 281\times 0.05

\mu = 14.05

The standard deviation is:

\sigma = \sqrt{np(1-p)}

\sigma = \sqrt{281 \times 0.05(1-0.05)}

\sigma = \sqrt{281 \times 0.05(0.95)}

\sigma = \sqrt{13.3475}

\sigma =3.6534

By using continuity correction; the sample mean x is:

x = 30 - 0.5

x = 29.5

The z statistic test can now be as follows:

Z = \dfrac{x-\mu}{\sigma}

Z = \dfrac{29.5-14.05}{3.6534}

Z = \dfrac{15.45}{3.6534}

Z = 4.23

Thus, the probability that company A will get a discount is

P(X ≥ 30) = P(Z >4.23)

= 1 - P(Z < 4.23)

By using the Excel function for the z score 4.23 i.e. "=1 - NORMSDIST(4.23)" we get;

= 0.0000

7 0
3 years ago
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