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Anestetic [448]
3 years ago
11

I really need help right now someone help pls!!!

Mathematics
1 answer:
Ray Of Light [21]3 years ago
5 0
The answer would be 120 degrees
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Pls Help Only if you know the answer Which statement correctly describes the relationship between the graph of f(x)=x and the gr
diamong [38]

Answer:

The graph of g(x) is the graph of f(x) translated 7 units down

Step-by-step explanation:

Hope this helps!

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3 years ago
What is the equation of the line that is perpendicular to the line y-2x=4 and passes through the point (2,4)
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Hope this helps you!

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3 years ago
The distribution of the diameters of a particular variety of oranges is approximately normal with a standard deviation of 0.3 in
In-s [12.5K]

Answer:

The correct answer is C.

Step-by-step explanation:

67^{th} percentile is represented as the value of probability in the norma distribution.

We look for a z-value with a left-tail of 0.67.

z=0.44

where,

z=\frac{x-M}{SD}

M: mean

SD: standar deviation

x=z×SD+M=0.44×0.3+M=M+0.132

The diameter of an orange at the 67^th percentile is 0.132 inch above the mean.

5 0
3 years ago
A number is selected at random from the set {2, 3, 4, … 10}. Which event, by definition, covers the entire sample space of this
PolarNik [594]
Let's do process of elimination

a) 2 is part of the set and 2 is not greater than 2. NO

b) 5 and 10 in the set are divisible by 5. NO

c) 2,4,6,8,10 are even but the rest are odd ( BUT note the word "or"). the rest are less than 12. YES

d) 0 and 1 are the only numbers that are neither prime nor composite (they're not even part of the set). NO

e) the square root of 9 is 3 so the maximum number is 9 (but what happened to 10?) NO

6 0
4 years ago
In 2009 a survey of Internet usage found that 79 percent of adults age 18 years and older in the United States use the Internet.
Alex777 [14]

Answer:

0.025 = 2.33\sqrt{\frac{0.79*0.21}{n}}

Option d.

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.

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

In which

z is the zscore that has a pvalue of 1 - \frac{\alpha}{2}.

The margin of error is:

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

79 percent of adults age 18 years and older in the United States use the Internet.

This means that \pi = 0.79

98% confidence level

So \alpha = 0.02, z is the value of Z that has a pvalue of 1 - \frac{0.02}{2} = 0.99, so Z = 2.33.

Which of the following should be used to find the sample size (n) needed?

We have to find n for which M = 0.025

So the equation is:

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

0.025 = 2.33\sqrt{\frac{0.79*0.21}{n}}

Option d.

4 0
3 years ago
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