The point (-7, 1) when reflected across the origin maps onto

A) (1, -7).

B) (7, 1).

OC) (7,-1).

D) (-1,7).

Power is the probability that a test correctly rejects a false null hypothesis​.

What is probability?

Simply put, probability measures how probable something is to occur. We can discuss the probabilities of various outcomes—how likely they are—whenever we're uncertain of how an event will turn out.

Power is inversely related to the probability of making a type 2 error (β) which is rejecting the alternative hypothesis when it is true.

The equation of power is:

Power=1-β

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Answer:

144

Step-by-step explanation:

sense you have the line in the triangle you would add that to the 16 (length) and multiply that by the 6 (hight) and that would be the area (144)

The margin of error of a confidence interval increases as:
c) the population standard deviation increases.



The margin of error (MOE) is influenced by three factors: the confidence level, the population standard deviation, and the sample size.

1. Confidence level: As the confidence level increases, the margin of error also increases because a higher confidence level requires a wider interval to ensure that the true population parameter is captured.
2. Standard deviation: As the population standard deviation increases, the margin of error also increases. A higher standard deviation indicates more variability in the population, leading to a wider confidence interval to account for this variability.
3. Sample size: As the sample size increases, the margin of error actually decreases because a larger sample provides more accurate estimates of the population parameter.

Therefore, among the given options, the margin of error of a confidence interval increases as the population standard deviation increases (option c).

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Answer:

its a i think

Step-by-step explanation:

The quarter mile grounding rule for rural electric utilities for direct-buried jacketed distribution cables says that they must have at least 4 grounds per mile.

A utility cooperative is a specific kind of cooperative that is responsible for providing its members with a public utility, such as power, water, or telecommunications. Profits are either distributed to members as "patronage" or "capital credits," which are dividends paid on a member's investment in the cooperative, or they are reinvested for infrastructure. 

Every consumer is a shareholder and a member of the company. This means that, in contrast to investor-owned utilities where the amount of individual authority is determined by the number of shares held, all members have the same level of personal authority. Many utility cooperatives operate their business in accordance with a set of ideals based on the Rochdale Principles, just like cooperatives active in other industries.

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write the given equation in a standard form

3x + 4y = 6

4y = 6 - 3x

4y = - 3x + 6

divided by 4 in both sides

y = - 4/3x + 3/2

standard form of a linear equation is

y = mx +c

therefore m for gradient is -4/3

the product of the gradient of the lines that are perpendicular to each other is -1

- 4/3 × mx = -1

mx = 3/4

y = mx + c

-5 = 3/4(2) + c

-5 = 3/2 + c

c = -13/2

therefore your equation is

y = 3/4x - 13/2

Answer:

I need points ill answer in a seconds

Step-by-step explanation:

lol

Answer:

x = -8

Step-by-step explanation:

-3( -4x - 1) = - 93

- 4 x -1 = -93/ - 3

-4x -1 = 31

-4x = 31+1

-4x = 32

x = 32/-4 = - 8

plz mark my answer as brainlist plzzzz.

hope this will be helpful to you

The position of a point or figure before any transformation is called "preimage"

After undergoing the transformation the resulting point/figure is called "preimage"

So for this exercise, the "preimage" is point A(5,-2)

This point was reflected over the point (4, -5)

To calculate the x-coordinate of B, first calculate the distance between the x-coordinates of point A and the reflection point.

Next subtract it to de x-coordinate of the reflection point

For the y-coordinate of B you have to follow the same method, first calculate the difference between the y-coordinates of point A and the reflection point:

Next subtract it from the y-coordinate of the reflecting point to determine the y-coordinate of B

The coordinates for point B are (3,-8)

Answer:

48

Step-by-step explanation:

31 - (-17)

31 + 17 = 48

-TheUnknownScientist

The key Neil and his 3 friends should use to make their pictograph for tracking the number of miles they run each week is to assign a symbol or icon to represent a specific number of miles. For example, they can use a small running shoe icon to represent 1 mile or 5 miles, depending on the scale they want to use.

In this scenario, Neil and his friends can create a pictograph using a chart with their names listed along the vertical axis and the weeks along the horizontal axis. For each person, they can draw the corresponding number of running shoe icons (based on the chosen scale) in each cell to represent the number of miles run that week.

This pictograph will help them visualize their progress and compare their weekly running distances with one another in a clear and organized manner.

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Answer:

x = 10

Step-by-step explanation:

9x + 9 = 8x + 19

9x - 8x = 19 -9

x =10

Answer:

10

Step-by-step explanation:

Angles are alternate exterior and congruent

9x + 9 = 8x + 19

9x - 8x = 19 - 9

x = 10  

Answer:

A. One point greater than the last test grade.

Step-by-step explanation:

One point greater than the last test grade can be written as an expression:n + 1

The difference of Gina’s score and one can be written as an expression:

n - 1

The total cost less one dollar can be written as an expression: n - 1

One minute less than Mickey’s previous time can be written as an expression: n - 1

Answer:

Step-by-step explanation:

its A

Answer: Just Try to Do somthing because i cant tell you the Answer

Step-by-step explanation:

For the given circle the value of x = \(18^{0}\) and the value of y = \(10^{0}\) .

What about circle?

A circle is a two-dimensional geometric shape that consists of all the points in a plane that are equidistant from a fixed point called the center. The distance from the center to any point on the circle is called the radius of the circle. The diameter of a circle is the distance across the circle passing through the center, which is equal to twice the radius.

The circumference of a circle is the distance around the outside edge of the circle and is given by the formula C = 2πr, where "r" is the radius of the circle, and "π" (pi) is a mathematical constant equal to approximately 3.14159. The area of a circle is given by the formula A = πr^2, where "r" is the radius.

The circle is a fundamental shape in geometry and is used in many areas of mathematics, science, and engineering. It has many properties that make it useful, such as being able to inscribe it in a square with equal sides, as well as being the shape that minimizes the perimeter for a given area.

According to the given information:

As, we know that when diameter passes through center of circle is form a right angle .

So,  

\(5x^{0} = 90^{0} \\\\x^{0} = 18^{0}\)

In the same way as we know that sum of all angle of triangle is = \(180^{0}\)

i.e.

\(5x^{0} + 50^{0} + 4y^{0} = 180^{0}\\\\90^{0} + 50^{0} + 4y^{0} = 180^{0} \\\\4y^{0} = 180^{0} - 90^{0} - 50^{0} \\\\y^{0} = 10^{0}\)

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Answer:

Step-by-step explanation:

The product of a negative two and a positive three is equal to negative six (-6).

The amount of money in Iris's checking account can be modeled by a linear function of the form:

y = mt + b

where y is the amount of money in the account, t is the time (measured in years), m is the rate of interest, and b is the initial amount in the account.

In this case, we have m = 0.04 (since the interest rate is 4% per year) and b = 180 (since that's the initial amount in the account). Therefore, the linear function that models the amount of money in Iris's checking account at any time t is:

y = 0.04t + 180

For example, if t = 5 (years), then the amount of money in Iris's checking account is 0.04 * 5 + 180 = 198 dollars.

The odds in favor of the event happening are 5 to 4.

We have,

To find the odds in favor of an event happening, we use the formula:

Odds in favor = Probability of the event happening / Probability of the event not happening

In this case,

The probability of the event happening is 5/9.

The probability of the event not happening is 1 - 5/9, which simplifies to 4/9. So the odds in favor of the event happening are:

Odds in favor

= 5/9 / 4/9

= 5/4

Therefore,

The odds in favor of the event happening are 5 to 4.

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The change in profit (ΔP) when the number of units (Δx) increases by 5, based on the given marginal profit function, is -18331.50

To find the change in profit (ΔP) when the number of units (Δx) increases by 5.

we need to evaluate the marginal profit function and multiply it by Δx.

The marginal profit function is given by dP/dx = 12.1(60 - 3x).

We are given the value of x as 121, so we can substitute it into the marginal profit function to find the marginal profit at that point.

dP/dx = 12.1(60 - 3(121))

= 12.1(60 - 363)

= 12.1(-303)

= -3666.3

Now, we can calculate the change in profit (ΔP) by multiplying the marginal profit by Δx, which is 5 in this case.

ΔP = dP/dx×Δx

= -3666.3 × 5

= -18331.5

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Answer:

\(S=\{-2,-3\}\)

Step-by-step explanation:

Required integers are: -2 and -3

The current density vector Jz that would produce the given vector potential A in cylindrical coordinates is Jz = -k/c r sin(θ).  

The current density required to produce the given vector potential A = kΦ is J_φ = k (∂Φ/∂ρ), where Φ is the magnetic flux.

First, let's define the cylindrical coordinates:

r = r(theta, z)

θ = θ(theta, z)

z = z

Now, we need to find the vector potential A = k Φ. Using the right-hand rule, we can determine the direction of the vector potential as the direction of the positive z-axis.

The curl of A in cylindrical coordinates is given by:

curl(A) = (1/r)(∂/∂r)(rA) + (1/rsin(θ))(∂/∂θ)(Asin(θ)) + (1/sin(θ))(∂/∂z)(Acos(θ))

Since we want A = k Φ, we have kA = -1/r(∂A/∂r) - 1/rsin(θ)(∂A/∂θ) - 1/sin(θ)(∂A/∂z).

Substituting the expression for A, we get:

k(1/r)(∂A/∂r) - 1/rsin(θ)(∂A/∂θ) - 1/sin(θ)(∂A/∂z) = -1

Now, we need to find the divergence of the magnetic field B, which is given by:

div(B) = (1/r)(∂B/∂r) + (1/rsin(θ))(∂B/∂θ) + (1/sin(θ))(∂B/∂z)

Using the Biot-Savart law, we can find the magnetic field B in cylindrical coordinates. The magnetic field is given by:

B = (1/4π)∫(J(r',θ',z') x r') x r dA'

where J(r',θ',z') is the current density vector.

We can substitute the expression for J in cylindrical coordinates and simplify the integral to obtain:

B = (1/4π)∫[(-1/r)(∫z' J(r',θ') dθ')r') - (1/sin(θ'))(∫z' J(r',θ') dz')] x r dA'

Now, we need to find the current density vector J. Using the Maxwell-Ampere law, we can find the curl of the electric field E in vacuum, which is given by:

curl(E) = -∂B/∂t

Substituting the expression for E in cylindrical coordinates, we get:

curl(E) = -∂B/∂t = (1/c) ∂(Jz)/∂t

where c is the speed of light in vacuum.

Now, we can substitute these expressions for B and curl(E) into the equation for the magnetic field and simplify to obtain:

k(1/r)(∂A/∂r) - 1/rsin(θ)(∂A/∂θ) - 1/sin(θ)(∂A/∂z) = -1

(1/c)(∂(Jz)/∂t) - 1/rsin(θ)(∂A/∂θ) - 1/sin(θ)(∂A/∂z) = -1

Solving these two equations simultaneously, we can find the constants k and Jz. Once we have these values, we can substitute them into the expression for the vector potential A to obtain:

A = k r sin(θ) + Jz/c

Therefore, the current density vector Jz that would produce the given vector potential A in cylindrical coordinates is Jz = -k/c r sin(θ).  

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A pyramid with a square base has a volume of 1682.64 cubic meters.

A perimeter is a closed route that covers, surrounds, or outlines a two-dimensional form or length. The circumference of a circle or an ellipse is its perimeter. There are various practical applications for calculating the perimeter. The perimeter of a shape is the distance around its edge. A shape's perimeter is always computed by summing the lengths of each of its sides. The perimeter of a thing is the distance surrounding it. Your house, for example, has a fenced-in yard. The perimeter of the barrier is its length.

Here,

side=16.7 m

volume=1/3*16.7²*18.1

=1/3*5047.909

=1682.64 m³

The volume of a pyramid with a square base is 1682.64 m³.

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Answer:

700,000, 100+80+2, 9,000

Answer:

80 is the breadth and 140 is the length

Step-by-step explanation:

Answer:

7.079

Step-by-step explanation:

the nine is worth 0.009

Answer:

7.079

Step-by-step explanation:

In the provided numbers, the 9 has the least value in 7.079. In this number, 9 is in the thousandths place, which is a lower place value than in the other numbers. Here's why:

In 0.9, the 9 is in the tenths place, which has a value of 0.9.

In 0.29, the 9 is in the hundredths place, which has a value of 0.09.

In 7.079, the 9 is in the thousandths place, which has a value of 0.009.

In 9.1, the 9 is in the ones place, which has a value of 9.

Therefore, in 7.079, the 9 has the least value.

Answer:

\(x=7,\\m\angle LKN = 84^{\circ}\)

Step-by-step explanation:

1. For KM to be the angle bisector of angle LKN, it must be bisect LKN into two equal angles. Therefore, we have the following equation:

\(9x-21=6x,\\-21=-3x,\\x=\boxed{7}\)

2. Substituting \(x=7\):

\(\angle LKN=9x-21+6x=9(7)-21+6(7)=63-21+42=\boxed{84^{\circ}}\)

The area to the left of Z=1.63 is approximately 0.9484.The area to the left of Z=1.63, representing the proportion of values that fall below Z=1.63 in a standard normal distribution, is approximately 0.9484.

To determine the area under the standard normal curve to the left of a given Z-score, we can use a standard normal distribution table or a calculator.

(a) For Z=1.63:

Using a standard normal distribution table or calculator, we find that the area to the left of Z=1.63 is approximately 0.9484.

The area to the left of Z=1.63, representing the proportion of values that fall below Z=1.63 in a standard normal distribution, is approximately 0.9484.

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Answer:

The answer you selected in the picture is correct

Step-by-step explanation:

where k is the constant of variation. For example, if y varies inversely as x, and x = 5 when y = 2, then the constant of variation is k = xy = 5(2) = 10. ... Thus, the equation describing this inverse variation is xy = 10 or y = .

Where the above conditions are given, note that ∠AFB  and ∠EFD are not vertical angles neither are they linear pair angles.

Vertical angles are a pair of non-adjacent angles formed by the intersection of two lines.

They are equal in measure and are formed opposite to each other. An example of vertical angles is when two intersecting roads create an "X" shape, and the angles formed at the intersection points are vertical angles.

Linear pair angles are a pair of adjacent angles formed by intersecting lines. They share a common vertex and a common side.

An example of linear pair angles is when two adjacent walls meet at a corner, and the angles formed by the walls are linear pair angles.

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