Graph the line f(x)=-2x+4

PLEASE PLEASEE HELP ITS PAST DUE AND ITS A TEST ILL GIVE BRAINLIEST

agasfer [191]

Answer:

The length will be letter C, 50 m

5 0

2 years ago

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6.Suppose the Gallup Organization wants to estimate the population proportion of those who think there should be a law that woul

drek231 [11]

Answer:

A sample of $n = (\frac{1.96\sqrt{0.3696*0.6304}}{E})^2$ is needed, in which E is the desired margin of error, as a proportion. If we find a decimal value, we round up to the next whole number.

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 of:

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

In a previous study of 1012 randomly chosen respondents, 374 said that there should be such a law.

This means that $n = 1012, \pi = \frac{374}{1012} = 0.3696$

95% confidence level

So $\alpha = 0.05$ , z is the value of Z that has a pvalue of $1 - \frac{0.05}{2} = 0.975$ , so $Z = 1.96$ .

How large a sample size is needed to be 95% confident with a margin of error of E?

A sample size of n is needed, and n is found when M = E.

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

$E = 1.96\sqrt{\frac{0.3696*0.6304}{n}}$

$E\sqrt{n} = 1.96\sqrt{0.3696*0.6304}$

$\sqrt{n} = \frac{1.96\sqrt{0.3696*0.6304}}{E}$

$(\sqrt{n})^2 = (\frac{1.96\sqrt{0.3696*0.6304}}{E})^2$

$n = (\frac{1.96\sqrt{0.3696*0.6304}}{E})^2$

A sample of $n = (\frac{1.96\sqrt{0.3696*0.6304}}{E})^2$ is needed, in which E is the desired margin of error, as a proportion. If we find a decimal value, we round up to the next whole number.

4 0

2 years ago

Quadrilateral ABCD is a square with diagonals that intersect at point E. Find angle ADB. A. 11.25º B. 22.5º C. 45º D. 90º

never [62]

IT WOULD BE "D" I BELIEVE

HOPE IM RIGHT AND THIS HELPS

7 0

2 years ago

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Separate triangular plot lines for two characters showing their stories progressing side by side

Savatey [412]

Answer:

Episodic

Step-by-step explanation:

There are different types of plot ,But the type of plot that was illustrated here is reffered to as episodic.

Episodic plot is the plot that can be described as one that is composed of series or varieties of different events, one of the unique features of the Episodic plot is that they are usually one chapter long, and they are usually related to one another.Each chapter of the plot posses its rising action, and this has relationship with somehow with the next and previous chapters.

The total events are joined together with just a common theme as well as characters.

6 0

2 years ago

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Solve for indicated side. Round to the nearest hundredth. b = 19 48

mr Goodwill [35]

The trigonometric function gives the ratio of different sides of a right-angle triangle. The value of b is 50.76 units.

<h3>What are Trigonometric functions?</h3>

The trigonometric function gives the ratio of different sides of a right-angle triangle.

$\rm Sin \theta=\dfrac{Perpendicular}{Hypotenuse}\\\\\\Cos \theta=\dfrac{Base}{Hypotenuse}\\\\\\Tan \theta=\dfrac{Perpendicular}{Base}$

where perpendicular is the side of the triangle which is opposite to the angle, and the hypotenuse is the longest side of the triangle which is opposite the 90° angle.

The value of c can be found by using the cosine function of trigonometry, therefore, the value of b is,

Cos(19°) = 48/b

b = 48/Cos(19°)

b = 50.76579 ≈ 50.76 units

Hence, the value of b is 50.76 units.

Learn more about Trigonometric functions:

brainly.com/question/6904750

#SPJ1

3 0

1 year ago