Four students, Daniel, Avani, Sydney, and Samantha, line up one behind the other. How many different ways can they stand in line?

The relationship between the variable is the direction, strength, and linearity .

Scatterplots can be used when one continuous variable is under the control of the experimenter and the other is dependent on it, or when both continuous variables are independent. When one parameter is systematically increased and/or decreased by the other, it is called the control parameter or independent variable and is usually plotted along the horizontal axis. Measured or dependent variables are usually plotted along the vertical axis. In the absence of a dependent variable, any type of variable can be plotted on any axis and the scatter plot he only shows the degree of correlation (not causality) between the two variables.

Scatterplots can suggest different types of correlations between variables with specific confidence intervals. If the dot pattern slopes downwards from the lower left to the upper right, this indicates a positive correlation between the investigated variables. If the dot pattern slopes from top left to bottom right, it indicates a negative correlation. You can draw a line of best fit (also called a "trend line") to explore the relationship between variables. The formula for correlation between variables can be determined by established best-fit methods. For linear correlation, the optimal procedure is called linear regression, which guarantees a correct solution in finite time. There is no one-size-fits-all procedure that guarantees the correct resolution in any relationship. Scatterplots are also very useful for seeing how two comparable data sets match up to show non-linear relationships between variables.

Desired Weight:

A standardized table of desirable (or ideal) weight for adult height is based on life expectancy. Both malnutrition and obesity are associated with an increased risk of early death. A desirable weight corresponds to a body mass index (ratio of weight in kg/height in m2) between 20 and 25. Ideal weight charts based on actuarial data were first published in 1942 by the Metropolitan Life Assurance Company of New York and were replaced in 1959 by charts of average and desirable weights.

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Equations −2x+5y=−2 and 4x−10y=4 have no solution.

An inconsistent system is a set of equations that cannot be solved. Although a system of linear equations typically has a single solution, it occasionally may have infinite or no solutions (parallel lines) (same line). The solution set refers to all possible answers to an equation or inequality. The no solution symbol,, is used to indicate that there is no solution to an equation or inequality. None Found: There are no solutions when the lines that make up a system are parallel because the two lines have no points in common.

Given,

Equations,

−2x+5y=−2 .. Equation 1

4x−10y=4 .. Equation 2

Multiplying equation 1 by 2

-4x + 10y = -4

4x - 10 y = 4

-----------------

0

Equations −2x+5y=−2 and 4x−10y=4 have no solution.

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Answer:

Formula 1 Racing

Step-by-step explanation:

The real part of Z₁+Z₂ is 8 and imaginary part of Z₁+Z₂ is -2, when Z₁ and Z₂ are added together and the result moves Z₁ 6 units right and 3 units down

A complex number is of the structure a + bi, a, b are real numbers, and I = √(- 1). Deciding the upsides of square underlying foundations of negative numbers is utilized. It is addressed in the direction plane with the real part on the x-hub and imaginary part b on the y-pivot, the arranged pair being (a, b).

In the inquiry, we are given two complex numbers,

Z₁ = 2 + i

Z₂ = 6 - 3i

These focuses are addressed on the direction plane as a circle and a triangle separately. We ascertain their total, z3.

To add Complex Numbers, the real parts are added to the genuine parts and the nonexistent to the imaginary.

∴ Z₃ =Z₁+Z₂ = (2 + i) + (6 - 3i) = (2+6) + (1-3)i = 8 - 2i.

This point is addressed as a square on the Direction plane.

Hence, we can say that real part is 8, and its imaginary part is - 2.

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Hence, a temperature increase of  

9

5

​

 degree Fahrenheit is equivalent to a temperature increase of  

81

25

​

 degree Celsius.

There are six types of possible quadrilaterals namely trapezium, parallelogram, rectangle, rhombus, square, and kite.

Explanation:

Different types of possible quadrilateral :

Therefore, there are six types of possible quadrilateral : trapezium, parallelogram, rectangle, rhombus, square, and kite.

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When a six-sided die and an eight-sided are rolled then the probability that exactly one 6 is rolled is 1/4.

Given, a six-sided die (with numbers 1 through 6) and an eight-sided die (with numbers 1 through 8) are rolled.

we have to find the probability that exactly one 6 is rolled.

First we have to check the total number of outcomes on rolling both the dices.

Now, the total number of outcomes be, 48

As, we the favorable outcomes be, the outcome with exactly one 6 on the dices.

Favorable Outcomes = { (1,6) , (2,6) , (3,6) , (4,6) , (5,6) , (6,1) , (6,2) , (6,3) , (6,4) , (6,5) , (6,7) , (6,8)}

The total number of favorable outcomes be, 12

So, the probability that exactly one 6 is rolled is

P(E) = Number of favorable outcomes / Total number of outcomes

P(E) = 12/48

P(E) = 1/4

Hence, the probability that exactly one 6 is rolled is 1/4.

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The speed of the each train = 63

Speed is defined as : The rate of change of position of an object in any direction.

Speed is measured as the ratio of distance to the time in which the distance was covered. Speed is a scalar quantity as it has only direction and no magnitude.

There are four types of speed and they are:

1. Uniform speed

2. Variable speed

3. Average speed

4. Instantaneous speed

Given that

The passenger train travels23mphr faster than the coal train

In 4 hours the two trains are 412 miles apart

Let the speed of  train = x

4*x+4*(x+23)=412

4x + 4x + 92 = 412

8x = 320

x = 40

the speed of the each train = x + 23 = 40 + 23 = 63

Given that

The passenger train travels 23mphr faster than the coal train

In 4 hours the two trains are 412 miles apart

let the speed of  train = x

4*x+4*(x+23)=412

4x + 4x + 92 = 412

8x = 320

x = 40

the speed of the each train = x + 23 = 40 + 23 = 63

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Answer:

6.48%

Step-by-step explanation:

The strategy to catch the spider is elaborated out here.

The best strategy for catching the spider after infinitely many steps is to start at one point in the grid and then move in a clockwise spiral, expanding your search area every time you move. As you move, you can use a combination of visual and physical cues, such as vibrations and sound, to detect the spider's presence. This method will ensure that the spider will eventually be caught in a finite amount of time. Additionally, if the spider changes directions, your search will be able to adjust to that change, as you will be able to detect it in the spiral pattern.

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Answer:

Step-by-step explanation:

o find the vertex of f(x)=x2−8x+7 , there are several things you can do. You could complete the square to get the equation into vertex ...

Answer: 1.06 cm

Step-by-step explanation:

Take 2.7 divided by 2.54 = 1.062cm

Rounded the nearest hundredth, so it will be 1.06 cm

The supplied statement states that there are 20 large snacks and 40 little snacks.

When two separate answers to a problem are combined, a new, complete solution is produced. Setting up a table will facilitate resolving these issues.

Alignment allows us to determine the ratio in which the ingredients/items have been combined and at what price they are offered to generate profit or face loss. A mixture, as the name implies, is combining two or more things together.

Briefing:

Total number of snacks = 60

Total earnings = $220

If only tiny snacks are sold, the total cost would be $180 (60 x 3).

Earnings difference = 220 - 180 = $40

$5 - $3 = $2 is the difference in the cost of the snack.

Number of Large snacks = $40 ÷ 2 = 20

Small snack count is 60 - 20 = 40.

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Answer:

v < 2.2

Step-by-step explanation:

0.5v < 1.14 – 0.04

0.5v < 1.1

v < 1.1/0.5

v < 2.2

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The value of b is 3.

The value of c is 1/8.

An equation is a mathematical statement that is made up of two expressions connected by an equal sign.

Example:

2x + 5 = 9 is an equation.

We have,

Two equations given are:

b = 24c ____(1)

(1/4)b + 4c = 5/4 _____(2)

Putting (1) in (2) we get,

(1/4)24c + 4c = 5/4

6c + 4c = 5/4

10c = 5/4

c = 5/40

c = 1/8

Putting c = 1/8 in (1) we get,

b = 24/8

b = 3

Thus,

b = 3.

c = 1/8.

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-15/2+√31.(3/2)i is the width of the garden.

The area of Rectangle is length times of width.

Given,

As an architect, your job is to fulfill the requirements of the client.

You are demanded by your client to have a plan or sketch in planting a garden and surrounding it with decorative stones.

Let width be x

The desired length of the lot is 15 meters longer than its width.

Length =x+15

The area of the rectangular plot should not be more than 126 m²

Area=Length×width

126=x(x+15)

126=x²+15x

x²+15x-126=0

Apply it in Quadratic formula.

x=-b±√b²-4ac/2a

a=1, b=15 and c=-126.

x=-15±√15²-4(1)(-126)/2(1)

x=-15/2+√31.(3/2)i.

Hence, the width of the garden is -15/2+√31.(3/2)i.

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In order to calculate the slope ratio of a ramp, divide the difference between the elevations of two points by the distance between them, then multiply the quotient by 100, the resultant figure is the slope ratio.

What is the slope of a line?

The slope or gradient of a line in mathematics is a number that defines both the direction and the steepness of the line. The tangent relation or the height-to-distance ratio helps to determine the slope of the line.

The difference between the elevations is also called as the rise. And the distance between the points is known as the run.

Thus, we can also say that,

Slope ratio= rise / run x 100.

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Answer:

Step-by-step explanation:

To find value of X ,first solve LHS

37*2x-37*14 =74x-518 +x

=75x-518

Now solve RHS

135x+75

Now equate LHS=RHS

75x-518=135x+75

75x-135x=75+518

-60x=593

x= -593/60

=-9.88

Answer:

No, it's doesn't mean you are not smart. Just maybe you need to focus on learning most of the things to solve in math, you need to start with what is given to you.

Here given to you that every scale of 2 in = 8ft in actual truck.

So in order to know what 6in equals. Break down 6 into something you can use which is 2in = 8ft

6 = 2 + 2 + 2

So 6in = 8ft + 8ft + 8ft

Which can be simplified to 6ft = 24 ft.

Answer:

24

Step-by-step explanation:

8 divided by 2 is 4 and 4 times 6 equals 24. Or you could do 6 divided by 2 equals 3 and 8 times 3 equals 24.

The slope of the line passing through points (3, -3) and (0, -3) is equal to zero.

If we look at the general meaning of slope then we find out that Slope is nothing but the elevation or the steepness of any curve plotted on a graph paper. Now, the formula for finding the slope between two points (x₁, y₁) and (x₂, y₂) is expressed as

m = (y₂ - y₁)/(x₂ - x₁)

where m is the slope between the points, (y₂ - y₁) is difference between the y coordinates and (x₂ - x₁) is the difference between the x coordinates.

We have the values as (x₁, y₁) = (3, -3) and (x₂, y₂) = (0, -3)

So, the slope will be expressed as

m = (-3 + 3)/(0 - 3)

m = 0/-3

m = 0 which is the required slope.

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Complete Question:

What is the slope of the line that passes through (3, -3) and (0, -3).

Answer:

60%

Step-by-step explanation:

The problem is basically saying:

12 is what percent of 20, which we can make this into a solvable equation:

12   is    what percent     of    20

12   =          ?%             x      20

Now to solve by dividing 12 by 20

12/20 = 0.6

Multiply 0.6 by 100 to get 60%

Answer:

7.9

Step-by-step explanation:

7.06<7.9

Answer: -108y^2 + 84y

Step-by-step explanation:

y^2 is y squared

give me brainiest! :D

The required simplified solution of the given expression is -108y² + 84y.

The process in mathematics to operate and interpret the function to make the function or expression simple or more understandable is called simplifying and the process is called simplification.

here,

Given expression,
= −12y(9y − 7).

Simplify,
Applying distributive property,
= -12y×9y - 12y(-7)
= -108y² + 84y

Thus, the required simplified solution of the given expression is -108y² + 84y.

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if they work together it takes 12/7 hours to mow one lawn

What is the arithmetic operation?

The four fundamental operations of arithmetic are addition, subtraction, multiplication, and division of two or more quantities. Included in them is the study of numbers, especially the order of operations, which is important for all other areas of mathematics, including algebra, data management, and geometry. The rules of arithmetic operations are required in order to answer the problem.

jake can mow a lawn in 3 hours.

kellie can mow a lawn in 4 hours.

1/3 lawns can be cut per hour by Jake.

kellie has a 1/4 hour cutting rate for lawns.

They can cut 7/12 lawns per hour by working together at a rate of 1/3 + 1/4.

One lawn can be mowed in 12/7 hours at a rate of 7/12 lawns per hour.

Hence if they work together it takes 12/7 hours to mow one lawn.

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By using percentage, it can be calculated that

Percentage reduction on the portable cd player  [tex]= 18.76 \%[/tex]

What is Percentage?

Suppose there is a number and the number has to be expressed as a fraction of 100. The fraction is called percentage.

For example 9% means [tex]\frac{9}{100}[/tex]. Here, 9 is expressed as a fraction of 100.

Original price of the CD player = $79.95

Selling price = $64.95

Reduction in price = $(79.95 - 64.95) = $15

Percentage reduction on the portable cd player = [tex]\frac{15}{79.95} \times 100 = 18.76 \%[/tex]

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Answer:

1

Step-by-step explanation:

there's no common factor between them

There are 26¹⁰ - 4 × (25)¹⁰ + 2 × (24)¹⁰ + 22¹⁰ exponential generating Function to make an arrangement  of Pennies, nickels, dimes and quarters with at least one penny and an odd number of quarters.

Exponential generating Function:

An exponential generator provides a way to encode a sequence as the coefficients of a power series. This encoding helps in many ways.

Therefore, According to the Question:

The exponential generating function is,

G(x) = (x¹/1! + x²/2! + ...)(x¹/1! + x³/3! + x⁵/5! +...)(x°/0! + x¹/1! + x²/2! + ...)²

where the first factor describes the pennies, the second describes the quarters, and the last describes nickels and dimes.

We want the coefficient of  Xˣ /r!.

Using exponential identities we get,

G(x) = [tex]e^{x} - 1 (\frac{e^{x} - e^{-x} }{2} ) (e^{x} )^2[/tex]

      = [tex]\frac{1}{2} (e^{4x} -e^{2x} -e^{3x} + e^{x}[/tex]

and the coefficient is

[tex]\frac{1}{2} (4^r -2^r -3^r +1)[/tex]

The generating function is

G(x) = (x¹/1! + x²/2! + ...)⁴(x°/0! + x¹/1! + x²/2!+...)²² = ()⁴,

and we again want the coefficient of  X¹⁰/10!.

Multiplying we get,

G(x) = [tex](e^{4x} - 4e^{3x} + 2e^{2x} + 1)e^{22x}[/tex]

       = [tex]e^{26x} - 4e^{25x} + 2e^{24x} +e^{22x}[/tex]

so the coefficient of  X¹⁰/10! is

26¹⁰ - 4 × (25)¹⁰ + 2 × (24)¹⁰ + 22¹⁰

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The vertex of the equation is (3, -290). Then the solutions of the equation will be 99.67 and -93.67.

Let the point (h, k) be the vertex of the parabola and a be the leading coefficient.

Then the equation of the parabola will be given as,

y = a(x - h)² + k

The equation is given below.

y = 3x² - 18x - 263

Convert the equation into vertex form, then we have

y = 3x² - 18x - 263

y = (√3x)² - 2 · √3x · 3√3 + 27 - 27 - 263

y = 3(x - 3)² - 290

Then the solution of the equation will be given as,

3(x - 3)² - 290 = 0

3(x - 3)² = 290

x - 3 = ± 96.67

x = 3 ± 96.67

x = 3 + 96.67, 3 - 96.67

x = 99.67, -93.67

The vertex of the equation is (3, -290). Then the solutions of the equation will be 99.67 and -93.67.

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Raw score can be computed by using arithmetical operations such as addition, subtraction, multiplication, and division.

This can be done by hand or by using a calculator or a computer program. Additionally, statistical methods such as mean, median, mode, and standard deviation can be used to compute raw data. Raw data can also be influenced in many ways.

For example, data can be organized, filtered, and sorted into categories or hierarchies. Data can also be visualized in graphs, charts, and diagrams to make patterns and trends feasible to understand. Statistical methods such as correlation and regression can also be used to analyze and interpret raw data. Additionally, data can be combined with other data sets to create new insights and relationships. Finally, machine learning and predictive analytics can be used to make predictions about future outcomes based on existing data.

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Answer:

3x + 4y = 16

Step-by-step explanation:

3x + 4y = 12

3(-4) + 4(7) = -12 + 28 = 16

Answer: 3x + 4y = 16