Help me please. I don't get it

Answer:
The slope of the driveway is 0.2 or 20%.

Step-by-step explanation:

Grade is a measure of the steepness of a slope, typically expressed as a percentage. To convert a grade percentage to a slope, you can use the following formula:

Slope = Grade / 100

So in this case, the grade of the driveway is 20%, and using the formula above, the slope of the driveway would be:

Slope = 20 / 100 = 0.2 or 20%

Keep in mind that grade is an expression of the steepness of a slope, and slope is an expression of the incline of a line. They are related, but they are not the same thing. Grade is a percentage, while slope is a ratio, and they are used in different contexts.

In mathematics, the grade of a surface represents its steepness or incline. A driveway with a grade of 20% means it inclines or descends 20 units vertically for every 100 units horizontally. Therefore, the slope of this driveway is 20/100 or 0.2.

In the field of mathematics, particularly in geometry, the term grade is often used to express the steepness or incline of a surface, like a driveway. If a driveway has a grade of 20%, it means that for every 100 units you move horizontally, you'll ascend or descend 20 units vertically.

The slope of the driveway is represented by the same proportion: rise over run, or vertical change over horizontal change. Therefore, in this case, the slope of the driveway is 20/100 or 0.2 when expressed as a decimal.

So, a driveway with a 20% grade has a slope of 0.2.

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5.7(26 - 3.82x) = 5.7(26) - 5.7(3.82x) = 149.2 - 21.534x

Answer:

5.7(26-3.82x)

(5.7*26) + (5.7*-3.82x)

148.2 + -21.774x

Step-by-step explanation:

The number of cows equation he has is 40

A system of equations is any set of two or more equations that may be solved to get a single answer. The power of the equation must be in one degree. It is possible to employ a set of equations with variables for cows and chicks. Animals on the farm are consequently x+y=40. The legs of the farm are 4x+2y=100 as a result. A system of equations is a collection of two or more equations that use the same variables. The answer to a system of equations is a set of values for a variable that concurrently satisfy each equation.

h is the number of horses the farmer owns.

Now,h+5h=168

6h=168

h=168/6

h=28 horses.

5*28=140 cows.

28+140=168

168=168

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For quickly creating a series of scatterplots for a large dataset, a data analyst should use a software tool specifically designed for data visualization.

There are several options for software tools that can be used for this purpose, including:

Tableau: A powerful data visualization software that provides an intuitive interface for creating scatterplots, as well as a wide range of other types of visualizations.

R: An open-source programming language for data analysis that has several libraries for creating scatterplots, including ggplot2, lattice, and base plotting.

Excel: A widely used spreadsheet software that has basic data visualization capabilities, including scatterplots, line charts, and bar charts.

Matplotlib: A popular Python library for creating visualizations, including scatterplots. It can be used in conjunction with the data analysis library pandas to easily create scatterplots from large datasets.

In general, data analysts should choose a software tool that is well suited to their needs and experience level and that is well suited to the task of visualizing large datasets. It's also important to consider the ease of use, speed of data processing, and the capabilities for customization and formatting of the scatterplots.

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Answer:

x ≈ 2.8

Step-by-step explanation:

using the sine ratio in the right triangle

sin60° = [tex]\frac{opposite}{hypotenuse}[/tex] = [tex]\frac{UV}{UW}[/tex] = [tex]\frac{2.4}{x}[/tex] ( multiply both sides by x )

x × sin60° = 2.4 ( divide both sides by sin60° )

x = [tex]\frac{2.4}{sin60}[/tex] ≈ 2.8 ( to the nearest tenth )

[tex]\qquad \qquad \textit{direct proportional variation} \\\\ \textit{\underline{y} varies directly with \underline{x}}\qquad \qquad \stackrel{\textit{constant of variation}}{y=\stackrel{\downarrow }{k}x~\hfill } \\\\ \textit{\underline{x} varies directly with }\underline{z^5}\qquad \qquad \stackrel{\textit{constant of variation}}{x=\stackrel{\downarrow }{k}z^5~\hfill } \\\\[-0.35em] ~\dotfill[/tex]

[tex]\stackrel{\textit{"y" varies directly with "x"}}{y = k(x)}\hspace{5em}\textit{we also know that} \begin{cases} y=13\\ x=12 \end{cases} \\\\\\ 13=k(12)\implies \cfrac{13}{12}=k\hspace{5em}\boxed{y=\cfrac{13}{12}x} \\\\\\ \textit{when x = 6, what's "y"?}\qquad y=\cfrac{13}{12}(6)\implies y=\cfrac{13}{2}[/tex]

The total sum of miles ridden by Ivy this week is 75 miles.

What is meant by the sum of a quantity?

A method of combining everything is a sum. The sum creates a new total by adding up two or more numbers.

Given,

Number of miles ridden on Monday = 15 miles

Number of miles ridden on Tuesday = 10 miles

Then,

Number of miles ridden on Wednesday = 2 times the sum of 15 and 10 = 2*(15+10) = 2*25 = 50 miles

Therefore the total sum of miles ridden so far this week

                                                                    = 15 + 10 + 50 = 75 miles

Hence the total sum of miles ridden by Ivy this week is 75 miles.

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Answer:

1 over 10 (1/10) is the correct answer.

Step-by-step explanation:

1/4⋅2/5

= 2/20

= 1/10

34.33 is  the original price of the shirt.

What does math mean by percentage?

A value or ratio that may be stated as a fraction of 100 is referred to in mathematics as a percentage. If we need to determine a percentage of a number, we should divide it by 100 and multiply the result.

                        Therefore, the percentage refers to a portion per hundred. Per 100 is what the word percentage signifies. The letter "%" stands for it.

Decrease in price = 10.3 - 10

                               =  0.3 %

Percentage decrease in price = 0.3/10.3 * 100  = 300/103

                                                 = 34.33

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The Laplace transform of the ramp function is equal to -  [tex]\frac{m}{s^2}[/tex].

If a function has a finite number of breaks and does not blow up to infinity anywhere, it is said to be piecewise continuous. Assuming that f(t) is a piecewise continuous function, the Laplace transform is used to define f(t). Lf(t) or F is the symbol for a function's Laplace transform (s). When a differential equation is reduced to an algebraic issue, the Laplace transform aids in its solution.

Applying  Laplace transformation on function x(t)=mt,

[tex]L{[x(t)]=X(s)= \lim_{t \to \infty} [\int_0^Tmte^{-st}dx]\\\\\\[/tex]

[tex]X(s)=m \lim_{t\to \infty} [\int_0^Tte^{-st}dx] \\[/tex]

To solve the integration e use the parts method,

[tex]\int_0^Tudu=uv]_0^T-\int_0^Tv du\\[/tex]

Let u=t and [tex]dv=e^{-st}dt[/tex]

[tex]X(s)=m \lim_{n \to \infty} [te^{-st}/-s]_0^T-\int_0^Te^{-st}/-sdt]\\\\=m \lim_{n \to \infty} [\frac{Te^{-sT}}{-s}-0-\frac{e^{-sT}}{(-s)^2} +e^0/-s]\\\\\\X(s)=\frac{m}{s^2}[/tex]

The Laplace transform of the ramp function x(t) = mt, whose slope is the constant m- X(s)=  [tex]\frac{m}{s^2}[/tex].

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According to the problem,The value of B is 8.

The value of depends on the subject matter and the purpose of the answer. In general, well-researched and thoughtful answers are invaluable, as they can provide insight, knowledge, and new perspectives. Plagiarism-free answers also demonstrate the writer's commitment to producing original content and respect for the original author's work.

Part A and C are each worth 1/3 of the whole, so A and C together are worth 2/3 of the whole. Since the value of Part A and Part C together is 14 + 28 = 42, the remaining value of the whole is 40 - 42 = -2. Since Part B is worth 1/3 of the whole, the value of B is 1/3 of -2, which is -2/3. Since fractions cannot be represented in the table, the value of B is rounded to the nearest whole number, which is 8.

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No, if less than two of the rolls produce snake eyes, the player shouldn't be startled. Out of 80 rolls, there is a 97.78% probability of receiving fewer than two snake eyes, making this scenario highly probable.

P(X < 2) = 1 - P(X = 2) = 1 - 0.27089 = 0.97711

No, if less than two of the rolls produce snake eyes, the player shouldn't be startled. There is a 1/36 chance of receiving "snake eyes" on any roll. Accordingly, the likelihood of receiving two snake eyes out of 80 rolls is only 0.27089, or roughly 27%. The likelihood of receiving fewer than two snake eyes, on the other hand, is 0.97711, or roughly 97.78%, out of 80 rolls. As a result, statistically speaking, it is more likely that less than 2 of the rolls will produce snake eyes. The player shouldn't be shocked if less than two of the dice produce snake eyes.

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Answer:

Step-by-step explanation:

4x

The only function [tex]z=e^{y}(ycosx - xsiny)[/tex] satisfies the equation and is considered a harmonic function.

The equation ∂^2.z/∂x^2 + ∂^2.z/∂y^2 = 0 is known as Laplace's equation, and it is used to determine if a given function is a harmonic function. In this case, we have two functions

=>[tex]z=e^{y}(ycosx - xsiny)[/tex] and

=> [tex]z=e^y(ycosx - xsinx)[/tex], and we need to determine which of these functions, if any, satisfies Laplace's equation.

The first step in this process is to calculate the partial derivatives of the functions.

After calculating the partial derivatives, we can then substitute them into Laplace's equation to see if the equation is satisfied.

In this case, only function[tex](1) z=e^y(ycosx - xsiny)[/tex] satisfies Laplace's equation, which makes it a harmonic function.

Function [tex](2) z=e^y(ycosx - xsinx)[/tex]does not satisfy Laplace's equation and is therefore not a harmonic function.

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Answer:

23.81%

Step-by-step explanation:

because  21-16 is 5 so 5/12 into a percentage is 23.81 percent.

Answer:

16.7%

Step-by-step explanation:

5 divided by 30, times 100 = 16.7%

Based on the data you provided, the proportion of chipped vae in the last 20 produced was 2/20 = 0.1.

Therefore, we would expect the number of chipped vae in the next 10 to be approximately 0.1 * 10 = 1.

The estimate of the number of chipped vae in the next 10 was determined by multiplying the proportion of chipped vae in the last 20 produced (0.1) by the number of vae to be produced in the next 10.

0.1 * 10 = 1

This estimate assumes that the proportion of chipped vae in the next production batch is the same as the proportion in the last 20. This is known as a point estimate and it's based on the information we have available.

Keep in mind that this is just a rough estimate and actual results may vary. Other factors such as changes in production processes or quality control measures may affect the proportion of chipped vae in the next batch.

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Answer:

Step-by-step explanation:

a. What is the experimental unit for this study?

b. Identify the variables measured and their type (quantitative or qualitative).

c. Explain why this is an example of inferential statistics. What inference can you make?

Answer:

7 3/7 - 3 4/5 is going to be 3 22/35

Answer:

3 22/35

Step-by-step explanation:

[tex]7\frac{3}{7} - 3\frac{4}{5} \\\frac{52}{7} - \frac{19}{5}\\ \frac{260}{35} - \frac{133}{35} \\\frac{127}{35} = 3\frac{22}{35}[/tex]

Answer:

y=-1/3x+8

Step-by-step explanation:

Given that the line is perpendicular to y = 3x + 5 and passes through the point (3,7), we can find the slope of the line by finding the negative reciprocal of the slope of y = 3x + 5.

The slope of y = 3x + 5 is 3, so the slope of the perpendicular line will be the negative reciprocal of 3, which is -1/3.

Next, we can use the point-slope form of a line to find the equation of the line. The point-slope form of a line is:

y - y1 = m(x - x1)

where m is the slope and (x1, y1) is a point on the line.

We can plug in the values we have:

y - 7 = -1/3(x - 3)

Expanding the right side:

y - 7 = -1/3x + 1

Adding 7 to both sides:

y = -1/3x + 8

So the equation of the line is:

y = -1/3x + 8

if a and b are invertible n×n matrices, then the inverse of a+b is a−1+b−1. Let W be the inverse of AB. Then WAB = I and (WA)B = l. Therefore, matrix B is invertible by part (j) of the IMT by letting C = WA.

We have A and B are two n × n matrices and AB is invertible. We have to prove that B is invertible by showing a valid reason given by one of the four options:

The first option is not valid proof. since W is the inverse of A B would imply WAB = I, as multiplying a matrix by its inverse will produce the identity matrix of the corresponding order. Here stated that WAB = B, which is invalid.

It is true that AB invertible implies  is invertible but this does not imply B is invertible (not a valid statement).

A B is invertible does not mean . Since  implies AB = I, but AB need not be only the identity matrix. So these statements are invalid.

W being inverse of AB, this gives WAB = I

(WA) B = I since matrix multiplication is associative.

WA is the inverse of B, as multiplying WA by B produces the identity matrix I. Hence, this is valid proof to show that B is invertible.

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Answer: SI units also known as the metric system are used for scientific measurements

~ h a d k a l a h ~

The best step that Devin can take to find the equivalent to the fraction 5/6 would be to multiply the numerator and the denominator by 2. That is option A.

A fraction can be defined as the representation of the part of a whole value in a form of numerator and denominator.

For a fraction to be equivalent to another fraction the numerator must by divided or multiplied by a single common number.

That is;

5/6 = X/12

make X the subject of formula;

X = 5×12/6

X = 60/6 = 10

Therefore 5/6 = 10/12 when both the numerator and denominator are multiplied by 2.

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The best step that Devin can take to find the equivalent fraction is; A.

Multiply the numerator and the denominator by 2.

A fraction is defined as the representation of the part of a whole expressed in a form of numerator and denominator or as a mixed fraction with a whole number and the numerator and denominator.

In order for us to consider a fraction to be equivalent to another fraction, it means that the numerator and denominator must by divided or multiplied by the same number.

Thus;

5/6 = x/12

Making x the subject of formula is;

x = 5(12/6)

x = 10

Thus, it means that both the numerator and denominator are multiplied by 2.

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The function calculation can be used to determine the value of f(6): f(6) = f(5) + 6 f '(x) (x) dx 5 f(6) = 14 + 6 f '(x) (x) dx 5 f(6) = 14 + 19 f(6) = 33

The values of f(5) and 6 f '(x) dx 5 can be used to get the value of f(6). Since f' is a continuous function by definition, it may be used to determine the area under the curve between any two locations using its derivative. The area between x=5 and x=6 can therefore be calculated using the definite integral 6 f' (x) dx 5. Adding the f value, which is equal to f(5), gives us f. (6). The definite integral 6 f' (x) dx 5 is 19 in this instance, while the value of f(5) is 14. Therefore, f(6) = f(5) + 6 f '(x) dx 5 = 14 + 19 = 33 can be used to compute the value of f(6). This demonstrates that f(6) has a value of 33.

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The statement that represents the direct variation for this equation is y = 3.49x, hence the correct option is B.

The relationship between two variables in which one is a constant multiple of the other is referred to as direct variation. For instance, two variables are said to be in proportion when one affects the other. b = ka is the equation if b is directly proportional to a. (where k is a constant).

The equation of direct variation is given as:

y = mx

Given that stratton family rented 3 dvds for a total of $10.47, we have y = 10.47 and x = 3.

Substituting the values of x and y in the equation we have:

10.47 = m(3)

m = 10.47/ 3

m = 3.49

Substituting the value of m in the equation we have:

y = 3.49x

Hence, the statement that represents the direct variation for this equation is y = 3.49x, hence the correct option is B.

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The correct question is:

The Stratton family rented 3 DVDs for a total of $10.47. Which of the following represents the direct variation equation for this situation? A. y = 3x B. y = 3.49x C. y = 10.47x D. y = 36.40x

The area of the figure is 98 square meters.

Area is the amount of area occupied by an object's flat (2-D) surface or shape.

A figure is given.

To find the area of the figure:

We will find the area in separate terns.

The area = 4 x 2 + (8+4) x 4 + (8 + 4 + 2) x 3

The area of the figure = 8 + 48 + 42

The area of the figure = 98 square meters.

Therefore, the area is 98 square meters.

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