help please! i don’t understand how to do this!

The confidence interval is between 64.6 and 66.2.

The 99% confidence interval of the data is determined using the formula: Confidence Interval = X ± Zc (SD/√n), where:

- X represents the sample mean,

- SD represents the standard deviation,

- Zc represents the critical value,

- √n represents the square root of the sample size.

Given the information provided in the question, we can plug in the values to calculate the confidence interval. Substituting the values, we have:

Confidence Interval = 65.4 ± 2.576 (1.2/√45) = 65.4 ± 0.754

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Answer:

None

Step-by-step explanation:

Answer:

\( \frac{0}{1} \)

\( \frac{0}{2} \)

\( \frac{0}{72} \)

\( \frac{0}{-56} \)

\( \frac{0}{10} \)

any number as the denominator and 0 as the numerator can be replaced in the place of 0.

Step-by-step explanation:

\( \frac{0}{any \: \: integer} = 0\)

\(\textit{volume of a cone}\\\\ V=\cfrac{\pi r^2 h}{3}~~ \begin{cases} r=radius\\ h=height\\[-0.5em] \hrulefill\\ V=\stackrel{doubled}{2V} \end{cases}\implies 2V=\cfrac{\pi r^2 h}{3}\implies V=\cfrac{\pi r^2 h}{3\cdot 2} \\\\\\ V=\cfrac{\pi r^2}{3}\cdot \cfrac{h}{2}\implies V=\cfrac{\pi r^2\left( \frac{h}{2} \right)}{3}\qquad \textit{half the previous "h"}\)

Answer: 2h

Step-by-step explanation:

Answer:

#1 - 11

#2 - 5

Step-by-step explanation:

#1 - This is really simple, as long as you don't think of it as numbers. The numbers 5 and 3 are being added to a number to make 19, so all you have to do is 19 - 5 - 3 or 19 - 8, which equals 11. So the certain number is 11.

#2 - The equation for this problem is (3 x ?) - 5 = 10. This equation is formed because you are subtracting 5 from 3 times a number, and to do all of this first, you need to figure out what 3 times a number equals (so it goes into the parentheses). From there, all you need to do is give a value that would substitute the question mark (normally you use a variable like n, x, y, etc.). This value would be 5, because 3 x 5 = 15 and 15 - 5 = 10.

:DDDDDDDDD

Answer:

1. 6

2. 8

3. 10

4. 12

5. 14

Step-by-step explanation:

just solve

Solution :

Population proportion, P = 77%

Sample size is given by n = 55

Sample proportion = \($\frac{x}{n} = \frac{34}{55}= 0.61$\)

Null hypothesis

The population proportion of the fatalities of the drivers that are related to alcohol = 77%

\($H_0 : P = 77$\) %

\($H_0 : P = 0.77$\)

Alternate hypothesis, \($H_a : P < 0.77$\)

Therefore, the test statistics = \($\frac{0.61 - 0.77}{\sqrt{\frac{0.7 \times 0.23}{55}}}$\)

                                                = -3.2

Critical value = -1.64

and the rejection zone : test zone, -1.645

Therefore, we fail rejecting \($H_0$\)

p value 0.0582

rejection zone :: p value , 0.01

So we fail to reject \($H_0$\)

Thus the data does not indicate the population proportion of the drivers fatalities which are related to the alcohols which is less than 77% in the county of Kit Carson.

Answer: 521

Step-by-step explanation:

34907/67=521

Answer:

A. 117

Step-by-step explanation:

The range is $117.80 to $120.625

96.50 x .15 = 14.475

96.50 + 14.475 + .07(96.50)

110.975 + 6.755

117.73 Lowest amount

96.50 x .18 = 17.37

96.50 + 17.37 + .07(96.50)

113.87 + 6.755

120.625 Highest amount

Answer:

rational

Step-by-step explanation:

cause it can be shown as a divition of real numbers

Answer: \(-x^{2} +6x+2\)

We can proceed with finding the specific solution using either method mentioned above.

The order of the differential equation is 2.

Since the auxiliary equation has complex roots (±3i), we know that the general solution to the differential equation will involve sine and cosine functions.

To find the specific solution, we can use the method of undetermined coefficients or variation of parameters. However, we first need to check for any singular points or irregular singular points in the equation.

Since the coefficient of y is a polynomial in x and the coefficient of y" is also a polynomial in x, there are no singular points or irregular singular points in the equation.

Therefore, we can proceed with finding the specific solution using either method mentioned above.

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Answer:

Well the answer is 1/2

Step-by-step explanation:

The best way to show your work is writing it out.

Answer:

\(y - 3 = - 4(x + 2)\)

The answer to the question is True. A decision maker's course of action results in a consequence or payoff is true.

A payoff is a result of a decision, while a consequence is an effect of a decision. This choice also applies to business decisions. In business, decision-makers must assess the potential consequences of their decisions and consider the various payoffs that could result from each option available to them.

In business, a decision's outcome or payoff is a direct function of the decision maker's ability to make sound decisions.

Payoff is the expected return from a decision or investment. The measure of a decision's success is frequently based on the payoff it produces, rather than the consequence it has.

The ability of the decision-maker to assess and choose the best option available to them will have a direct impact on the payoff they achieve as a result of their decision.

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Answer:

1. Angle f and s are supplementary angles, which is equal to 180, so we will: 180-35= 145

So angle f= 145 (degrees)

Angle Q= 180-49 (supplementary angles)

So angle Q= 131

I'm so sorry but I do not know the answer of Q2

I tried.

Answer:

one

Step-by-step explanation:

one equation

tanks Please brianlist

Answer:

El perímetro de un terreno rectangular mide 48 m . Calcula sus dimensiones si el largo es el doble que el ancho.

Respuesta:

De largo mide 16m

De ancho mide 8m

Explicación paso a paso:

Perímetro = número de lados multiplicado por longitud del lado.

Formula: P = 2(a + b)  o    P = 2b + 2h

Donde: P = Rectángulo del perímetro

           a y b = Longitudes de lados

Asignamos las variables:

Largo = 2x

Ancho = x

Utilizamos la formula:

2(x) + 2(2x) = 48

2x + 4x = 48

6x = 48

x = 48/6

x = 8m  (ancho)

2x

2(8)

16m (largo)

Step-by-step explanation:

When a cylinder is intersected by a plane parallel to the bases, the resulting cross-section is a circle.

A cylinder is a solid geometric figure which has two parallel, congruent bases.

The bases are connected by a curved surface called a lateral surface. If a plane is made to intersect a cylinder, the resulting cross-section can be circular or elliptical, depending on how the plane intersects the cylinder.

In this case, if the plane intersects the cylinder parallel to the bases, the resulting cross-section is a circle because any section taken parallel to the base of a cylinder is congruent to the base.

This is true for both right cylinders and oblique cylinders.

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Answer:

8

Step-by-step explanation:

The following expression  →  |- 5| + |3| is equivalent to 8

The absolute value of a number is the magnitude of number. Absolute value describes the distance from zero that a number is on the number line, without considering direction.

We have the following expression -

|- 5| + |3|

For a number [x], such that [x] < 0, the absolute value would be -

v[a] = - x

and for [x] > 0

v[a] = x

So, for x = |- 5| + |3| , the equivalent expression would be -

5 + 3

8

Therefore, the following expression  →  |- 5| + |3| is equivalent to 8.

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Answer:

14.28%

Step-by-step explanation:

I'm not sure if it's right but this is how I worked it out,

the box's contents are 4.2 pounds in total,

therefore in a fraction it would be 6/42

you turn a fraction into a percentage you do the numerator divided by the denominator

6÷42=0.142857(decimal form)

now you just turn it into a percentage

14.28%

please correct me if I'm wrong

Answer:

\(\frac{-x^{2}+5x-1}{2x^{2} -x-1}\)

Step-by-step explanation:

You have not provided the contents of any of the drop-down menus, so we cannot say for certain what the answers should be--except in the case of "infinitely many solutions.

2x + 9 + 3x + x = 6x

2x + 9 + 3x + x = 15

2x + 9 + 3x + x = 6x + 9

Based on the given conditions,

(1) No solutions :

There will be no solutions when the left side is inconsistent with the right side:

2x + 9 + 3x + x =  _ x + _

We can sum of difference,

6x + 9 = 6x

Subtract 6x from both sides,

6x - 6x = -9

9 = 0

9 = 0 which is absurd and hence the equation has no solution.

(2) One solutions :

There will be one solution when the left side and right side are not inconsistent and not the same.

2x + 9 + 3x + x = 15

6x + 9 = 15

Subtract 9 from both sides.

6x = 6

Divide both sides by 6.

x = 1 and this is the only solution.

(3) Infinity solutions :

There will be an infinite number of solutions when the equation is true for any value of x. This will be the case when the left side and right side are identical.

2x + 9 + 3x + x = 6x + 9

6x + 9 = 6x + 9

Subtract 6x from both sides,

9 = 9, both sides are balanced which means, the equation has infinitely many solutions.

Therefore,

2x + 9 + 3x + x = 6x

2x + 9 + 3x + x = 15

2x + 9 + 3x + x = 6x + 9

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Answer:

\((25 {x}^{2} + 20xy + 16 {x}^{2} )(5x - 4y) = \\ 125 {x}^{3} + 100 {x}^{2} y + 80x {y}^{2} - 100 {x}^{2} y \\ - 80x {y}^{2} - 64 {y}^{3} = \\ 125 {x}^{3} - 64 {y}^{3} \\ please \: give \: brainliest\)

Answer:

9) y=x+16

10) width=x-a

Step-by-step explanation:

You can find the complete solution for question 9 and question 10 in the given attachment

ANSWER 9)

FROM FIGURE

area of televsion=area of rectangle=length×breadth

Given,

Area of rectangle=x²+16x

x²+16x=length×breadth

x²+16x=y×x

dividing by x on both sides we get

x+16=y

Hence y=x+16

I hope it helped you

Answer is :

Step-by-step explanation:

Here,

f(x) = 2x + 1

g(x) = x² - 7

We have to find (f - g) (x)

(f - g) (x) is similar to f(x) - g(x)

Further solving for f(x) - g(x)

Put value of f(x) and g(x) here

2x + 1 - x² - 7

2x - x² - 6

-x² + 2x - 6

Similarly, (f - g) (x) = -x² + 2x - 6 (Answer)

In the collection, there are 11 nickels and 23 dimes. If each nickel is replaced with a quarter, the value of the collection becomes $5.05. So, C is correct. By writing them in the system of equations, we get the required value.

The given units are nickels, dimes, and quarters. Their conversion into dollars is as follows:

1 nickel = $0.05

1 dime = $0.10

1 quarter = $0.25

Given a collection of nickels and dimes is worth $2.85.

And there are 34 coins in the collection.

So, consider the number of nickel coins = n and the number of dime coins = d.

Then, the equation for the given collection is

n + d = 34...(1)

0.05n + 0.10d = 2.85...(2)

On simplifying (2), we get

5n + 10d = 2.85 × 100

⇒ 5n + 10d = 285

From (1), n = 34 - d, we get

5(34 - d) + 10d = 285

⇒ 170 - 5d + 10d = 285

⇒ 5d = 285 - 170 = 115

∴ d = 115/5 = 23

Thus, the number of dime coins is 23.

So, from (1), we get n + 23 = 34 ⇒ n = 34 - 23 = 11

∴ n = 11

Thus, the number of nickel coins is 11.

If each nickel coin in the collection is replaced with a quarter, then the value of the collection is

q + d = 34 and 0.25q + 0.10d = Y

Here q = 11; d = 23

So, we get

0.25(11) + 0.10(23) = Y

⇒ 2.75 + 2.3 = Y

⇒ 5.05 = Y

∴ Y = $5.05

The value of the new collection becomes $5.05.

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The coordinates of point E are (0, 1), which is option A.

In mathematics, a graph is a visual representation of a set of objects and the relationships between them. The objects are typically represented by points, called vertices, and the relationships between them are represented by lines or curves, called edges.

Graphs are widely used in many fields of mathematics, as well as in computer science, engineering, and the social sciences, to model and analyze complex systems and networks. For example, a graph can represent a network of computer nodes, a social network of individuals, or a system of interconnected processes.

We can use the formula given to find the coordinates of point E. Let's assign the values as follows:

x1 = 2, y1 = -3 (coordinates of A)

x2 = -4, y2 = 9 (coordinates of B)

m = 1 (ratio of 1:2)

n = 2

Using the formula x=(m/m+n)(x2−x1)+x1, we get:

x=(1/3)(-4 - 2) + 2 = 0

Therefore, the x-coordinate of point E is 0.

Using the formula y=(m/m+n)(y2−y1)+y1, we get:

y=(1/3)(9 - (-3)) - 3 = 1

Therefore, the y-coordinate of point E is 1.

Hence, the coordinates of point E are (0, 1), which is option A.

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The approximate sum of a series is -1.572 when the absolute value of the last term is less than 0.00005. Sum when n = 1 is -6, when n = 2, when n = 3, when n = 4, when n = 5, when n = 6, when n = 6.

The given series is: [infinity] (−1)n 6nn! n = 1We need to approximate the sum of the given series correct to four decimal places. In order to approximate the sum of a series correct to four decimal places, we need to sum the series until the absolute value of the last term is less than 0.00005. So, we have:
Sum when n = 1: \([(-1)^1 * 6^(1)]/[1!]\)= -6
Sum when n = 2: \([(-1)^2 * 6^(2)]/[2!]\)= 9
Sum when n = 3: \([(-1)^3 * 6^(3)]/[3!]\)= -7.2
Sum when n = 4: \([(-1)^4 * 6^(4)]/[4!]\)= 3.6
Sum when n = 5: \([(-1)^5 * 6^(5)]/[5!]\)= -1.296
Sum when n = 6: \([(-1)^6 * 6^(6)]/[6!]\)= 0.324
The absolute value of the 6th term is less than 0.00005, therefore, we can approximate the sum correct to four decimal places as follows:

Sum = -6+9-7.2+3.6-1.296+0.324

= -1.5720 approx. = -1.572

Therefore, the approximate sum of the given series correct to four decimal places is -1.572.

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The area of the shaded sector is 4π square units.

To find the area of the shaded sector, we need to calculate the central angle formed by the sector. In this case, we are given that the angle JIK is 90 degrees, which means it forms a quarter of a full circle.

Since a full circle has 360 degrees, the central angle of the shaded sector is 90 degrees.

Next, we need to determine the radius of the circle. The line segment IJ represents the radius of the circle, and it is given as 4 units.

The formula to calculate the area of a sector is A = (θ/360) * π * r², where θ is the central angle and r is the radius of the circle.

Plugging in the values, we have A = (90/360) * π * 4².

Simplifying, A = (1/4) * π * 16.

Further simplifying, A = (1/4) * π * 16.

Canceling out the common factors, A = π * 4.

Hence, the area of the shaded sector is 4π square units.

Therefore, the area of the shaded sector, expressed as a fraction times π, is 4π/1.

In summary, the area of the shaded sector is 4π square units, or 4π/1 when expressed as a fraction times π.

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Although increasing the sample size can improve the accuracy of the estimate, there are some problems that may arise with very large samples.

The following are the problems that can occur:

Difficulty in obtaining a very large sample: It may be difficult to obtain a large sample that is representative of the population and has a low bias.

Cost of sampling: Collecting data from a very large sample can be time-consuming and expensive.

None of these: This is not a problem that can arise with very large samples.

Increase in standard error: As the sample size increases, the standard error of the estimate tends to decrease, but after a certain point, increasing the sample size further may not lead to a significant reduction in the standard error, and may even increase it due to other factors such as measurement errors or non-random sampling. This is called the "law of diminishing returns".

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