solve the system using either gaussian elimination with back-substitution or gauss-jordan elimination. (if there is no solution, enter no solution. if the system has an infinite number of solutions, express x, y, and z in terms of the parameter t.) 3x 3y 6z

Answer:

82.554

Step-by-step explanation:

take 85.23 subtract from 2.676;

= 85.23-2.676

=82.554

The factored form of the equation  P(x) = x³ + 3x² + x + 3  is P(x) = (x+1)(x² + 2x + 3).

An equation is a mathematical expression that shows that two things are equal.

One common method for finding the factored form of a polynomial equation is to use the Rational Root Theorem, which states that if a rational number a/b is a root of the polynomial equation, then (x-a/b) is a factor of the polynomial equation.

We can then use long division to divide the polynomial by the linear factor, repeat the process with the remaining polynomial, and continue this process until the polynomial is fully factored.

The polynomial equation

=> P(x) = x³ + 3x² + x + 3

can be factored as

=> (x+1)(x² + 2x + 3).

The equation P(x) = (x+1)(x² + 2x + 3) is now written as a product of two linear factors, (x + 1) and (x² + 2x + 3).

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Step-by-step explanation:

(∞,-14/3/2] ∪ [14/3/2, ∞)

The graph of the solution would be the set of all real numbers except for the number -14/3/2. It would be a number line with two open dots on either side of -14/3/2.

Answer:

30

Step-by-step explanation:

to divide by a fraction, multiply by the reciprocal of it

the reciprocal of 1/6 is 6

5*6=30

Irene multiplied 10 raised to the power of 4.

Math requires the use of arithmetic, algebra, and divisions. They result in the following when combined: An equation, some statistics, and a mathematical function Values, factors, and mathematical processes like adding, addition and subtraction, complex numbers, and division can all be found in a statement of fact. Different words and terms can be analysed and evaluated.

Here,

She ended up moving the decimal point in 83.904 four places to the right

i.e.

839040

Irene performed the operation

= 83.9040 / 83.904

= 10000

= 10⁴

Therefore, the solution of the given problem of expression comes out to be Irene performed the operation 83.904 × 10.⁴

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Answer:

Step-by-step explanation:

40 or less for males 35 or less for females

One possible equation that represents the function is:

y = 2x, which can also be written as y = 2 * x.

Here's how the function values correspond to the equation:

When x = 1, y = 2 * 1 = 2

When x = 2, y = 2 * 2 = 4

When x = 3, y = 2 * 3 = 6

When x = 5, y = 2 * 5 = 10

And so on.

Note that there are other equations that could also represent the same function, but y = 2x is one possible option.

Answer:

is there a picture I can see

The value that tells us the skewness of the data that we have here is -0.4273

The skewness of the data distribution is the statistic that is used to tell us of the level of asymmetry that is in the data set.

In order to solve for the skewness, we would have to use Microsoft excel

All of values would be entered into the formula

SKEW (418, 184, 264, 347, 485, 382)

The output that it would display can be rounded to -0.427

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Answer: it’s not because of the angles

Step-by-step explanation:

Answer:

the angles are wrong for it to be a parallelogram

so sorry if I'm wrong

The correlation coefficient, r, for each of the graph is:

Graph 1: 0.88.

Graph 2: 0.43

Graph 3: -0.75

Graph 4: -0.1.

You can visually examine the graph to determine the direction and strength of the relationship between the two variables.

If the points tend to form a straight line sloping upwards to the right, the correlation is positive, indicating that the two variables are positively related (as one variable increases, so does the other). If the points tend to form a straight line sloping downwards to the right, the correlation is negative, indicating that the two variables are negatively related (as one variable increases, the other decreases).

The strength of the correlation is determined by how tightly the points are clustered around the line. If the points are tightly clustered around the line, the correlation is strong. If the points are scattered more widely, the correlation is weak.

Once you have determined the direction and strength of the relationship, you can estimate the correlation coefficient using a rough approximation. For example, if the correlation is positive and the points are tightly clustered around the line, the correlation coefficient is likely to be close to +1. If the correlation is negative and the points are widely scattered, the correlation coefficient is likely to be close to -1. If there is no clear relationship, the correlation coefficient is likely to be close to 0.

Therefore:

Graph 1 has an r-value of 0.88.

Graph 2 has an r-value of 0.43 because the points are moderately farther apart from each other and slopes upwards.

Graph 3's r-value would be -0.75 because the points are closer to each other and slopes downwards to the left.

Graph 4's r-value would be -0.1.

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This means that 5% of the 10-1/2-month-old baby boys in the reference population weigh 16.7 pounds or less, and 95% of these baby boys weigh 16.7 pounds or more.

The determination is based on the definition of a percentile. A percentile is a value below which a certain percentage of the data falls. So, in this case, if a weight of 16.7 pounds is at the 5th percentile for 10-1/2-month-old baby boys, then 5% of the baby boys in the reference population have a weight of 16.7 pounds or less. This also means that the remaining 95% of the baby boys in the reference population have a weight of more than 16.7 pounds.

The calculation of percentiles is based on the ranking of the data set. The data is first sorted in ascending order and then divided into 100 equal parts, with each part representing a percentile. The value at each percentile is the value below which a certain percentage of the data falls.

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Answer:

Step-by-step explanation:

You want the cost of a notebook and a thumb drive when 5 notebooks and 15 thumb drives costs $395, while 12 notebooks and 8 thumb drives cost $248.

The two purchases can be described by the equations ...

Subtracting the second equation from 3 times the first, we have ...

  3(n +3d) -(3n +2d) = 3(79) -(62)

  7d = 175

  d = 25 . . . . . . . divide by 7

Substituting into the first equation gives ...

  n +3(25) =79

  n = 4 . . . . . . . subtract 75

The cost of each notebook is $4; the cost of each thumb drive is $25.

__

Additional comment

It is often easier to solve a system of equations when they are written in standard form. Here, we made the coefficients mutually prime by dividing each equation by the greatest common factor. For the first equation, we divided by 5; for the second equation, we divided by 4. This is especially useful if one of the coefficients ends up being 1.

The expression f(x) = 4(x + 6)(x - 2) can be expanded as follows:

What is a mathematical expression?

A mathematical expression is made up of a statement, at least two integers or variables, and one or more arithmetic operations. This mathematical operation enables the multiplication, division, addition, or subtraction of numbers. The following is the structure of an expression: Expression: (Number/Variable, Math Operator, Math Operator)

f(x) = 4(x^2 - 2x + 6x - 12)

Expanding the inner parentheses,

f(x) = 4(x^2 + 4x - 12)

So, the expanded and simplified form of f(x) = 4(x + 6)(x - 2) is

f(x) = 4x^2 + 16x - 48

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The preceding statement suggests that simple interest equals $4.38

Simple annual interest of borrowing-related interest that is computed using only the initial principal and a constant interest rate. Compounding, in which borrowers wind up paying tax on principle plus interest that increases over a few of payment periods, is not a part of it. The original is multiplied by time, rate of return, and time period to determine simple interest.

Due to it,

P = $39

R = 0.0625%

T = 180 days

Now, Simple Interest = P*R*T/100

Simple Interest = 39 * 0.0625 * 180/100

Simple Interest = 2.92

Therefore, Simple Interest is $4.38

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Answer:

C.] 10

Step-by-step explanation:

We can substitute x for 10. 10 is less than 11 so this makes the statement true.

the explanation is in the picture

Answer:

its 5/45

Step-by-step explanation:

The graph that shows the following system of equations and its solution is graph number C

A graph is the graphical representation of equations on a graph sheet

The given equations are

-4x-3y=4

4x-y=-4 Solving the equations

In equation 1

When x = 0

-3y = 4

y=-4/3                  (0, -4/3)

When y = 0

-4x = 4

x= -1            (-1, 0)

In equation 2 when x = 0

-y = -y = 4             (0, 4)

When y = 0

4x=-4 x=-1              (-1, 0)

When these coordinates are used to plot the graph, graph number is is obtained.

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Answer: $2240

Step-by-step explanation:

$1400 x 1.60 = $2240

The probability of getting all tails in 9 coin flips is (1/2)^9, which is approximately equal to 0.02.

The probability of getting all tails in 9 coin flips can be calculated by multiplying the probability of getting tails on each individual flip. Since the coin is fair, the probability of getting tails on a single flip is 1/2. Hence, the probability of getting all tails in 9 coin flips is given by (1/2)^9, which is approximately equal to 0.02. This means that there is a 2% chance of getting all tails in 9 coin flips.

It is important to note that in a sequence of coin flips, the order in which the heads and tails appear is important. For example, getting HTTTHTTTT and THTTTHTTT are two different outcomes, even though both have the same number of heads and tails. The total number of possible outcomes in 9 coin flips is 2^9, which is equal to 512. So, to calculate the probability of getting all tails in 9 coin flips, we need to calculate the number of possible outcomes with 9 tails, divide that number by the total number of possible outcomes, and obtain (1/2)^9.

Therefore, probability = 0.02

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Answer:

Distrubute it equally

Step-by-step explanation:

Answer:

Sampling distributions are a fundamental concept in statistics. They describe the distribution of sample statistics, such as means and proportions, over many samples of the same size taken from the same population. Sampling distributions provide essential information about the variability and stability of these sample statistics and help us make inferences about the population parameters.

The central limit theorem states that, as the sample size increases, the distribution of the sample means approaches a normal distribution, regardless of the shape of the population distribution. We can use regular distribution models to predict the sample mean and estimate the population means with confidence intervals.

In addition to the central limit theorem, other essential concepts in sampling distributions include the law of large numbers, which states that the average of the sample means approaches the population means as the sample size increases, and the standard error of the mean, which is a measure of the variability of the sample mean.

Knowing about sampling distributions is essential for understanding statistical inference and for making informed decisions about populations based on sample data. They provide a framework for evaluating the reliability and accuracy of sample statistics, and they play a crucial role in hypothesis testing, estimation, and other data analysis techniques.

Answer:the answer is 47

Step-by-step explanation:

100 - 55 = 45, which represents the 7-12 year olds who chose comedy

98 - 45 = 53, people in 13-18 who chose comedy

100 - 53 = 47 which represents the people of 13-18 who chose action and adventure

HOPE THIS HELPS!!!!

Journalizing the business transactions in the general journal form is as follows:

   Account Titles               Debit      Credit

1. Cash                            $40,000

Common Stock                            $40,000

2. Supplies                         $400

Accounts Payable                            $400

3. Equipment                 $8,000

Cash                                             $2,000

Note Payable                              $6,000

4. Accounts Receivable $4,000

Commission Revenue              $4,000

5. Rent Expense               $700

Cash                                            $700

6. Accounts Payable       $200

Cash                                          $200

7. Advertising Expense $600

Accounts Payable                   $600

8. Salaries and Wages $2,200

Cash                                     $2,200

The general journal is the initial accounting record of a business transaction.

In the general journal, transactions are recorded chronologically, according to the date they occur.

The general journal forms the basis for posting transactions to the general ledger.

1. Cash $40,000 Common Stock $40,000

2. Supplies $400 Accounts Payable $400

3. Equipment $8,000 Cash $2,000 Note Payable $6,000

4. Accounts Receivable $4,000 Commission Revenue $4,000

5. Rent Expense $700 Cash $700

6. Accounts Payable $200 Cash $200

7. Advertising Expense $600 Accounts Payable $600

8. Salaries and Wages $2,200 Cash $2,200

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Option D : The range-based for loop is a convenient way to iterate over elements in an array or other container type, without having to worry about indexing or keeping track of the end condition.

The syntax of the range-based for loop is as follows:

for (dataType identifier : arrayName)

{

statements

}

Here, dataType specifies the type of each element in the array arrayName. identifier is a variable that will be used to refer to each element of the array in turn, as the loop iterates. The keyword in is optional and can be omitted. The statements inside the loop will be executed once for each element in the array.

For example, if you have an array of integers named numbers, you could use a range-based for loop to print each element of the array as follows:

int numbers[] = {1, 2, 3, 4, 5};

for (int num : numbers)

{

cout << num << endl;

}

This would print the numbers 1 to 5, each on a separate line.

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Suppose that arrayName is an array, wherein each element is of type dataType. Which of the following is the correct syntax for the range-based for loop?

a. for (identifier : arrayName) statements

b. for (dataType : arrayName) statements

c. for (arrayName : dataType identifier) statements

d. for (dataType identifier : arrayName) statements

The percentage of measurements in the interval x { s is 100%. The percentage of measurements in the interval x { 2s is 50%. The percentage of measurements in the interval x { 3s is 33.33%.

The number of measurements in the interval x { s is the total number of measurements, since the interval covers all the measurements. This means that the percentage of measurements in this interval is 100%.

The number of measurements in the interval x { 2s is half the total number of measurements, since the interval covers only half of the measurements. This means that the percentage of measurements in this interval is 50%.

The number of measurements in the interval x { 3s is one-third of the total number of measurements, since the interval covers only one-third of the measurements. This means that the percentage of measurements in this interval is 33.33%.

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The equation of a parabola with center (h, k) and focus (h + p, k) can be written in standard form as:

What exactly is a parabola?

Any point on a parabola is at an equal distance from both the focus, a fixed point, and the directrix, a fixed straight line. A parabola is a U-shaped plane curve. The topic of conic sections includes parabola, and all of its principles are discussed here.

(x - h)²  + (y - k)²  = 4p² (y - k)

Plugging in the values from the given information:

h = 6, k = -4, p = 2√6

The equation is:

(x - 6)²  + (y + 4)² = 4(2√6)² (y + 4)

Expanding and simplifying:

(x - 6)² + (y + 4)²  = 144(y + 4)

Expanding the right side further:

(x - 6)²  + (y + 4)²  = 144y + 576

Rearranging the equation:

(x - 6)²  = 144y + 576 - (y + 4)²

Distributing and completing the square on the right side:

(x - 6)²  = 144y + 576 - y²  - 8y - 16

(x - 6)²  = 144y - y²  - 8y + 560

Expanding the square on the left side:

x²  - 12x + 36 + y² - 144y + 8y²  = 560

Combining like terms:

x²  - 12x + y²  - 156y + 8y²  + 36 = 560

Rearranging to standard form:

8y²  - 156y + x² - 12x + 36 = 560

Subtracting 560 from both sides:

8y²  - 156y + x² - 12x - 524 = 0

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The given function has no solution it will be false for all real values of x.

Simplifying procedures is one way to achieve uniformity in job efforts, expenses, and time. It reduces diversity and variation that is pointless, harmful, or unneeded. Parenthesis, exponents, multiplication, division, addition, and subtraction are all referred to as PEMDAS. The order of the letters in PEMDAS informs you what to calculate first, second, third, and so on, until the computation is finished, given two or more operations in a single statement.

Given a function –1/2 (12x – 2) = –6x – 1

Simplifying the given function using the rule of PEMDAS

=> –1/2 (12x – 2) = –6x – 1

multiply by -2 on both sides

=> 12x - 2 = 12x +2

==> 4 = 0

Therefore, the given function has no solution it will be false for all real values of x.

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As a result, the rate of change is -60 miles per hour. This indicates that Valerie's distance from Houston drops by 60 miles per hour.

Slope is a measure of the steepness of a line or the rate of change between two variables. In mathematics, slope is often represented by the letter "m". The slope of a line is the ratio of the change in the vertical coordinate (rise) to the change in the horizontal coordinate (run) between two points on the line. The slope has important properties and interpretations. A slope of zero indicates a horizontal line, a positive slope indicates an upward slope, and a negative slope indicates a downward slope. The slope can also be used to determine whether two variables are positively or negatively correlated. In addition to its use in describing lines, slope is also used in other areas of mathematics, such as in the study of graphs of functions and in calculus. The slope of a function at a specific point is known as the derivative of the function, and it is used to study the rate of change and the concavity of the function.

Here,

The rate of change can be determined by finding the slope of the line that represents the function. In this case, we can use the given information to write an equation for the function and then find its slope.

Let's call the number of hours she drives z and the distance from Houston y. Based on the information given, we know that after 3 hours, her distance from Houston is 60 miles:

y = 60 miles

z = 3 hours

And we know that her distance from Houston decreases by 120 miles every 2 hours:

Δy = -120 miles

Δz = 2 hours

So the rate of change, or slope, is given by:

slope = Δy/Δz = -120/2 = -60

So the rate of change is -60 miles per hour. This means that for every hour that passes, Valerie's distance from Houston decreases by 60 miles.

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