HELP PLEASE.
Area=

If there is no value under the square root enter a 1.

Answer:

0.45

Step-by-step explanation:

Answer:

0.45 kg

Step-by-step explanation:

Only options I and III are (C)'s correct responses.

I. k-fold cross-validation requires fitting the model k times, whereas LOOCV requires fitting the model n times. Since k > n, k-fold cross-validation is more efficient computationally than LOOCV.

II. k-fold cross-validation has an advantage over LOOCV in bias reduction since each training set is a random sample of the data and tends to reduce bias.

III. LOOCV has an advantage over k-fold cross-validation in variance reduction since LOOCV uses almost all the data to fit the model for each test observation, resulting in lower variance in the test error estimate. In contrast, k-fold cross-validation uses only a subset of the data for each training set, which can lead to higher variance in the test error estimate.

In conclusion, assertions I and III are valid, and the proper response is (C) I and III alone.

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Answer:

$5.35

Step-by-step explanation:

20-14.65=5.35

Answer:

To find -134 + 53, add the ones place (4+3=7) and the tens place (5+3=8), giving you -81.

Answer: -81.

Answer:

-81

Step-by-step explanation:

You subtract the absolute values and take the sign of the larger absolute value.

Absolute value is the distance from zero.  This will be a positive number

134 - 53 = 81

The sign will be negative because the sign of the higher absolute value number is negative.  134 has a larger absolute value than 53 and it is negative, so our answer is negative.

Helping in the name of Jesus.

This is a contradiction, which means that there is no solution for the given equation. Therefore, the correct answer is option C, "No solution".

There is only one solution for the given equation.

5 - 3x = 4 + x + 2 - 4x

Simplifying the equation, we get:

5 - 3x = 6 - 3x

Subtracting 6 from both sides, we get:

-1 - 3x = -3x

Adding 3x to both sides, we get:

-1 = 0

A linear equation is an equation that can be written in the form y = mx + b, where y and x are variables, m is the slope, and b is the y-intercept. It represents a straight line on a graph. Linear equations can be used to model a variety of real-world situations, such as the relationship between temperature and time, or the cost of producing a certain quantity of goods.

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We can see that both sides are equal, which means that the equation has infinitely many solutions.

Therefore, the answer is: D. Infinitely many solutions is correct.

To solve for the number of solutions of 5 - 3x = 4 + x + 2 -4x,

we first simplify the equation by combining like terms:

Combine like terms on both sides of the equation:

5 - 3x = 6 - 3x

Compare the coefficients of the x terms:

-3x = -3x

Since both sides of the equation have the same coefficients for the x terms, there are infinitely many solutions.

Therefore, the answer is: D. Infinitely many solutions is correct.

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Answer:

R= {a,b,c}

S = {b, c, d}

T = {c, d, e},

Step-by-step explanation:

R U S U T. ={a,b,c}U{b, c, d}U{c, d, e},={a,b,c,d,e}

Answer:

Step-by-step explanation:

To calculate the sample variance for the homicide rate per 100,000 individuals in a sample of selected cities in the United States, you need to use the following formula:

Sample Variance = (∑ (x - X) 2) / (n - 1)

Where x is each homicide rate value in the sample, X is the mean of the homicide rate values, and n is the number of values in the sample.

For example, if the sample contains the following homicide rate values:

100, 200, 300, 400

The mean (X) would be 250, and the sample variance would be:

Sample Variance = ( ∑ ( x - 250 ) 2) / (4 – 1)

= (100,000 + 50,000 + 10,000 + 0) / 3

= 160,000 / 3

= 53,333.3

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Answer:

100km/h

Step-by-step explanation:

gl

By Green's Theorem, we have:

∫CF · dr = ∬ curl(F) · dA = -16 - 6π.

To use Green's Theorem to evaluate the line integral of a vector field F along a closed curve C, we need to compute the double integral of the curl of F over the region enclosed by C.

Let's first check the orientation of the given curve C.

The equation of the circle is\((x-6)^2 + (y+9)^2 = 16.\)

This is centered at (6, -9) and has radius 4.

Since the equation of the circle is given in the form\((x-a)^2 + (y-b)^2 = r^2,\)we know that the circle is oriented counterclockwise.

To change the orientation to clockwise, we need to reverse the direction of the parameterization.

So, let's parameterize the circle C in a clockwise direction. One possible parameterization is:

x = 6 + 4cos(t)

y = -9 + 4sin(t)

0 ≤ t ≤ 2π

The orientation of the curve is clockwise because as t increases from 0 to 2π, the point on the circle moves in the clockwise direction.

Now, let's compute the curl of the vector field F = (y - cos(y), x sin(y)):

curl(F) = (∂Q/∂x - ∂P/∂y) = (sin(y) - 1, 0, x cos(y))

Since the z-component is zero, we only need to evaluate the double integral of the first two components of the curl over the region enclosed by the circle:

∬ curl(F) · dA = ∬ (sin(y) - 1) dA

We can convert this to polar coordinates using the Jacobian transformation:

dA = r dr dθ

The limits of integration for r are 0 to 4, and for θ are 0 to 2π. So, we have:

∬ curl(F) · dA = ∫₀²⁴ ∫₀²π (sin(y) - 1) r dθ dr

= ∫₀²⁴ [(sin(-9+4r) - 1) ∫₀²π r dθ] dr

= ∫₀²⁴ [(sin(-9+4r) - 1) (2πr)] dr

= 2π ∫₀²⁴ [(sin(-9+4r) - 1) r] dr

This integral can be evaluated using integration by parts.

Let u = r and dv = sin(-9+4r) - 1 dr. Then, du = dr and v = -(1/4)cos(-9+4r) - r.

Substituting into the formula for integration by parts, we get:

∫₀²⁴ [(sin(-9+4r) - 1) r] dr = [-r(1/4)cos(-9+4r) - \(r^2\)/2]₀²⁴ + (1/4) ∫₀²⁴ cos(-9+4r) - 1 dr

= (1/4) [sin(-9+4r) - 4\(r^2\)  - rcos(-9+4r)]₀²⁴

= (1/4) [sin(23) - 4(16) - 24cos(23)]

= -16 - 6π

Therefore, by Green's Theorem, we have:

∫CF · dr = ∬ curl(F) · dA = -16 - 6π.

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To evaluate f · dr using Green's theorem, we first need to check the orientation of the given curve, which is a circle with center (6,9) and radius 4. The equation of the circle is (x-6)^2 + (y-9)^2 = 16. The orientation of the curve is clockwise as given in the problem.

    In this case, we have the vector field F(x,y) = (y - cos(y), x sin(y)). We need to find the curl of F to evaluate the double integral. The curl of F is given by:

curl F = (∂Q/∂x - ∂P/∂y) = (sin(y) - sin(y), 1 + sin(y))

Now we can apply Green's theorem to evaluate the line integral of F · dr over the circle C. We have:

∫C F · dr = ∬D curl F dA

where dA is the area element. Since the circle C encloses the region D, we can use polar coordinates to evaluate the double integral. We have:

∬D curl F dA = ∫θ=0 to 2π ∫r=0 to 4 (1 + sin(y)) r dr dθ

Evaluating the double integral, we get:

∫C F · dr = 32π

Therefore, the line integral of F · dr around the circle C oriented clockwise is 32π.

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The expanded form of the expressions is 3y + 3x

These are mathematical expressions that are composed of terms, variables, constants and  factors with coefficients,

These expressions are also known to include mathematical or arithmetic operations, such as;

They could also be made up of fractions and decimlals

We have the expression;

3(y + x)

expand the parentheses

3y + 3x

Hence, the expression is 3y + 3x

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Answer:

I think B

Step-by-step explanation:

Uhh

Answer:

6 mm  slope 3

Step-by-step explanation:

Answer: 0.098 is the answer

Step-by-step explanation:

   Value of \(10^x\) will be between 1 and 10.

 Given in the question,

If we have to find the range of the value of the number, substitute x = 0 and 1

\(10^0=1\)

\(10^1=10\)

  Therefore, value of \(10^x\) will vary between 1 and 10.

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Therefore , the solution of the given problem of expressions comes out to  5.6, -5, -5.8 .

Instead of producing estimates at random, it is better to utilize movable numerals variables, which can be rising, falling, or blocking. They could only help one another by sharing materials, information, or solutions to issues. A declaration of truth may contain arguments, elements, and annotations to mathematical operations like additional disapproval, manufacturing, and mixture.

Here,

Sort these figures from greatest to least in sequence.

=> -5.8, -5, 5.6

So,

=>5.6, -5, -5.8

Therefore , the solution of the given problem of expressions comes out to
5.6, -5, -5.8 .

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Answer:

where is the number line at?

Answer:

jhgvghj

Step-by-step explanation:

ihuvubij

The statement is false. It is not legal to directly instantiate an abstract class, whether or not it is initialized.

An abstract class is a class that cannot be instantiated directly. It serves as a blueprint for its subclasses and is meant to be extended and implemented by its derived classes. Abstract classes are designed to be partially or fully implemented by their subclasses, and they often contain abstract methods that must be overridden by the subclasses.

Attempting to instantiate an abstract class directly will result in a compilation error. The purpose of an abstract class is to provide a common interface and define common behavior for its subclasses. Therefore, it is not intended to be instantiated on its own.

To use the functionality of an abstract class, you need to create a concrete subclass that extends the abstract class and implements any necessary abstract methods. Instances of the concrete subclass can then be created and utilized.

Therefore, Incorrect. It is not permissible to directly create an instance of an abstract class, regardless of whether it is initialized or not.

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The answer inequality of the given line will be -4<n<5.

A number line is an image of numbers plotted on a straight line, either horizontally or vertically. We can compare numbers and execute simple arithmetic operations on them easily by writing the numbers down on a number line. The starting point of a number line is often regarded as zero (0).

These numbers to the left of zero are all negative while the numbers just on right of zero are all positive. As a result, we can argue that on a number line, the value of numbers grows as we approach the right. The numbers on the right are therefore larger than the ones on the left, according to this statement.

The endpoints of the given line are -4 and +5.

So the value of inequality should lie between these two lines only.

The inequality can be written as n< 5 and n>-4

or -4<n<5

Hence the answer inequality of the given line will be -4<n<5.

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Answer:

56

Step-by-step explanation:

If each child gets 2 sweets then we have to multiply the number of children by 2.

\(28 \times 2 = 56\)

Answer:

30 sweets.

Add 28 and 2.

Answer:

a. 16

Step-by-step explanation:

2(5)(2) = 20; 20 - 3(5) = 5; 5 + 11 = 16

I hope I did this right. Good luck

Answer:

B. 46

Step-by-step explanation:

2(5)^2-3(5)+11

PEMDAS (exponent)

2(25)-3(5)+11

PEMDAS

50-15+11

subtract (because it came before addition)

50-15= 35+11

final step add

46

Option (c) ⟨cos t, sin t, cos^2t⟩ is a parameterization for a helix around the z-axis, so it doesn't match the intersection of the two surfaces. Option (e) ⟨2cos t, -8 sin^2 t, 2sint⟩ is a parameterization for a twisted ribbon around the y-axis, so it also doesn't match the intersection. Option (a) ⟨t,t^2,t^4⟩ and option (b) ⟨t,2t^2,t⟩ are not even close to the correct parameterization, so the answer is (d) None of these.

To find the intersection between the two surfaces, we need to find the values of x, y, and z that satisfy both equations. We can start by solving one equation for one of the variables and substituting that into the other equation. For example, we can solve y + 2z^2 = 0 for y and get y = -2z^2. Then we can substitute this expression for y into the second equation x^2 + z^2 = 4 and get x^2 + (-2z^2)^2 = 4. Simplifying this, we get x^2 + 4z^4 = 4, or x^2/4 + z^4 = 1. This is the equation of an elliptic cylinder centered on the y-axis.

Now we need to find a parameterization for this elliptic cylinder. We can use the trigonometric parameterization ⟨cos t, sin t, z⟩ for the circle x^2 + z^2 = 4 in the xz-plane. Then we can substitute this into the equation x^2/4 + z^4 = 1 to get (cos t)^2/4 + z^4 = 1, or z^4 = 4 - 4(cos t)^2. Taking the fourth root of both sides, we get z = ± (4 - 4(cos t)^2)^(1/4). So a parameterization for the elliptic cylinder is ⟨2cos t, ± 2(1 - (cos t)^2)^(1/4), cos t⟩.

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A pair of intersecting lines that forms a pair of complementary angles is as drawn below.

Remember that complementary angles are defined as angles which sum is equal to 90°.

Besides, each of the pairs of opposite angles made by two intersecting lines are called vertical angles. Now, from congruent proofs, we know that that vertical angles are congruent. In another words, they have the same measure.

Thus, we have to draw two vertical angles that measure:

90° ÷2 = 45°

This image is as drawn below in the attached file.

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The answer is "infer from a sample the characteristics of a population."

Inferential statistics allow us to infer from a sample the characteristics of a population.

Thus, the correct answer is "infer from a sample the characteristics of a population."

Inferential statistics is the method of drawing inferences about a larger population based on a sample of data taken from it.

It is an essential aspect of statistics that involves the analysis of the data and drawing conclusions from it by estimating characteristics and making predictions about the population's parameters.

In other words, inferential statistics allow researchers to infer characteristics about a population based on the characteristics of a sample.

It is used to make inferences about the parameters of a population, such as the mean, variance, and proportions.

These inferences are usually accompanied by an estimation of the uncertainty associated with the results. T

Therefore, the answer is "infer from a sample the characteristics of a population."

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Answer:

9.6

Step-by-step explanation:

Answer:

the answer is 9.6

Step-by-step explanation:

your welcome

In space, there can be infinitely many planes that are perpendicular to a given line at a given point on that line.

The correct answer is Option D.

The key concept here is that a plane is defined by having at least three non-collinear points.

When a line is given, we can choose any two points on that line, and then construct a plane that contains both the line and those two points. By doing so, we ensure that the plane is perpendicular to the given line at the chosen point.

Since we can select an infinite number of points on the given line, we can construct an infinite number of planes that are perpendicular to the line at various points.

Thus, the correct answer is D. infinitely many planes can be perpendicular to a given line at a given point in space.

The correct answer is Option D.

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Answer:

LN=40

Step-by-step explanation:

M is the midpoint of segment LN, meaning LM is congruent to MN. So you double the given value for MN (which is 20) and you have 40. Hope this makes sense.

============================================

Work Shown:

x = price of one jump rope before the discount

x-1.80 = price of one jump rope after discount

2*(x-1.80) = total amount Gavin spends

2*(x - 1.80) = 14.38

x - 1.80 = 14.38/2 .... divide both sides by 2

x - 1.80 = 7.19

x = 7.19 + 1.80 ..... adding 1.80 to both sides

x = 8.99

Before the sale, one jump rope costs 8.99 dollars

After the sale, one jump rope costs 8.99 - 1.80 = 7.19 dollars.

This doubles to 2*7.19 = 14.38 dollars which is what Gavin spent in total. This helps confirm the answer.

Answer:

$8.99

Step-by-step explanation:

The value of z for a 95% confidence interval is approximately 1.960, rounded to three decimal places.

To find the value of z for a 95% confidence level, we can use the standard normal distribution table or a calculator.
Therefore,

The value of z that should be used to calculate a confidence interval for the percentage of married couples in which at least one partner has a doctorate with a 95% confidence level is:
z ≈ 1.96
To find the value of z for a 95% confidence interval, you will use the standard normal distribution table or a calculator with a built-in function.
For a 95% confidence interval, you want to find the z-score that corresponds to the middle 95% of the distribution, which leaves 2.5% in each tail.

Look for the z-score that corresponds to the 0.975 percentile (1 - 0.025) in the table or calculator.
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Answer: hey Andrew Davila it’s green Z

Step-by-step explanation:

Answer:

it might be Green z

Step-by-step explanation:

because there is only three (Z) and one (X) so it represents Green Z

I hope it works out