math hw please helpppp

The system of equations, helps to determine the quantity of each kind of coffee for mixture. The 9 pounds of Guatemala antigua coffee blend and one pound of gazebo coffee blend should be mix.

We have a coffee distributor needs to mix a(n) Guatemala antigua coffee blend. Let us assume, x = pounds of the Guatemala antigua coffee blend

y = pounds of the gazebo coffee blend

The new mixture is 10 pounds, so x + y = 10

And normally sells value of Guatemala antigua coffee blend per pound = $8.50

so, sells for x pounds of the Guatemala antigua coffee blend = $8.50x

Normally sells value of gazebo coffee blend per pound = $13.10y

Total sells = $12.64 × 10

8.50x + 13.10y = 12.64 × 10

We have the following system of equations:

x + y = 10 --(1)

8.50x + 13.10y = 126.4 --(2)

We have to solve the system of equations for determining value x and y. Using the Elimination method, from equation (1), x = 10 - y, put in equation (2), 8.50x + 13.10y = 126.4

=> 8.50 ( 10 - y ) + 13.10y = 126.4

=> 85 - 8.5y + 13.10y = 126.4

=> 4.6 y = 41.4

=> y = 41.4/4.6 = 9

from equation (1), x = 10 - 9 = 1

Hence, required value is 9 pounds and 1 pounds.

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A candidate's final multiple score main answer can have a maximum of three cumulative Pass Not Advanced (PNA) points applied to it.

PNA points are a form of assessment for a candidate's answers to multiple-choice questions.

They are awarded when the candidate selects an answer that is not necessarily wrong, but does not go into sufficient depth or demonstrate the required level of understanding.

Each PNA point is worth a fraction of a mark, with a total of three PNA points making up one mark of the candidate's final multiple score main answer.

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The five-card hand is dealt at random from a standard 52-card deck. the probability of having exactly 2 kings and the ace of spades given that you have at least one ace is 2.9%.

        To find the probability of having exactly 2 kings and the ace of spades given that you have at least one ace

        When a five-card hand is dealt at random from a standard 52-card deck is as follows:

        There are 52 cards in a standard deck. Therefore, there are 4 Kings and 1 Ace of Spades. The number of ways in which we can select 2 Kings from 4 Kings is:

                             ₄C₂ = [tex](4 * 3)/(2 * 1)[/tex]

                                    = 6

           The number of ways in which we can select the Ace of Spades from 1 Ace is:

                              ₁C₁ = 1

            The remaining 2 cards are non-Kings and non-Ace of Spades cards. So, there are 44 such cards. The number of ways in which we can select 2 cards from 44 cards is:

                           ₄₄C₂ = [tex](44 * 43)/(2 * 1)[/tex]

                                   = 946

      Therefore, the total number of ways in which we can select 2 Kings and 1 Ace of Spades and 2 non-Kings and non-Ace of Spades cards is:

                        [tex]6 * 1 * 946[/tex] = 5676

      There are 4 Aces in a standard deck. The number of ways in which we can select at least one Ace from 4 Aces is:

                 ₄C₁ + ₄C₂ + ₄C₃ + ₄C₄ = 4 + 6 + 4 + 1

                                                    = 15

       Therefore, the probability of having exactly 2 kings and the ace of spades given that you have at least one ace when a five-card hand is dealt at random from a standard 52-card deck is:

P(exactly 2 Kings and the Ace of Spades | at least one Ace) = (Number of ways in which we can select 2 Kings and 1 Ace of Spades and 2 non-Kings and non-Ace of Spades cards) / (Number of ways in which we can select at least one Ace)

                         = 5676/15

                         = 378.4 or 0.029 or 2.9%.

   Therefore, the required probability is 0.029 or 2.9%.

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The perimeter of  isosceles triangle PRQ is 24.65 units.

The lengths of its three sides and add them up. We can use the distance formula to find the length of each side.

Distance formula: The distance d between two points (x1, y1) and (x2, y2) is given by:

d = [tex]sqrt((x2 - x1)^2 + (y2 - y1)^2)[/tex]

Using this formula, we can find the lengths of the sides PR, RQ, and PQ.

PR = [tex]sqrt((-1 - (-7))^2 + (4 - (-1))^2) = sqrt(36 + 25) = sqrt(61)[/tex]

RQ =[tex]sqrt((3 - (-1))^2 + (-1 - 4)^2) = sqrt(16 + 25) = sqrt(41)[/tex]

PQ = [tex]sqrt((3 - (-7))^2 + (-1 - (-1))^2) = sqrt(100) = 10[/tex]

Therefore, the perimeter of triangle PRQ is:

PR + RQ + PQ = [tex]sqrt(61) + sqrt(41) + 10 ≈ 24.65[/tex] (rounded to two decimal places)

So, the perimeter of triangle PRQ is approximately 24.65 units.

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The forecaster (or the software) must set three parameters using Winter's exponential smoothing. (Option 4)

Winter's exponential smoothing is a method for forecasting in which the forecast for the next period is weighted more heavily based on the data that was recorded in previous periods.

The formula for Winter's exponential smoothing includes three parameters: alpha, beta, and gamma. Parameters in Winter's exponential smoothing:

alpha: The degree of smoothing that is applied to the level of the series. The alpha value will vary between 0 and 1.

beta: The degree of smoothing applied to the trend of the series. The beta value will vary between 0 and 1.

gamma: The degree of smoothing applied to the seasonal component of the series. The gamma value will vary between 0 and 1.

Hence, the forecaster (or the software) must set three parameters using Winter's exponential smoothing.

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Answer:

Missing leg = [tex]2\sqrt{14}[/tex]

Step-by-step explanation:

Pythagorean theorem

[tex]a^{2} +b^{2}=c^{2}[/tex]

[tex]12+b^{2} = 8^{2}[/tex]

[tex]12+b^{2} =64[/tex]

[tex]b^{2}=56\\[/tex]

[tex]b=\sqrt{56}[/tex]

[tex]b=2\sqrt{14}[/tex]

Answer:

544 in²

Step-by-step explanation:

Find the area of the rectangle, then the triangle, then add them together to get the total SA.

Rectangle = l x w = 10 x 14 = 140 in²

SA of the 2 rectangular sides = 140 x 2 = 280 in²

Triangle = 1/2bh = 1/2(12)(8) = 48²

SA of the 2 triangular ends = 2 x 48 = 96 in²

Rectangular base = 14 x 12 = 168 in²

Total SA = 280 + 96 + 168 = 544 in²

The value of mean should be adjusted to 12 + 2.576σ so that 99% of the cans will contain 12 oz or more.

The process mean can be adjusted through calibration. The mean is a measure of central tendency in a dataset that represents the average value of a group of data. The population standard deviation is denoted by σ. The formula for the population mean is as follows: μ = (Σ xi) / n, where xi represents the data values and n represents the total number of data values.

Here we can use the formula of confidence interval as,μ±z σ/√n, Where μ is the mean, z is the z-score, σ is the standard deviation is the sample size. Given,The required confidence level is 99%. So,α = 1-0.99α = 0.01. We can find z from the z-score table at α/2 = 0.005 as, z = 2.576.

Now, we need to find out the value of μ when the mean will be 12 ounces so that 99% of cans will contain 12 ounces or more. So,μ ± z σ/√n = 12. We know that, P(X > 12) = 0.99. The formula for standardization is, Z = (X - μ) / σHere, X = 12, σ is given and we need to find the value of μ.z = (X - μ) / σ2.576 = (12 - μ) / σμ - 12 = 2.576 × σμ = 12 + 2.576 × σ.

Now, the value of μ should be adjusted to 12 + 2.576σ so that 99% of the cans will contain 12 oz or more.

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The missing value in the arithmetic sequence is 11.

What is Arithmetic Sequence?

An arithmetic sequence is a list of numbers with a definite pattern. If you take any number in the sequence then subtract it by the previous one, and the result is always the same or constant then it is an arithmetic sequence.

To find the missing value in the arithmetic sequence, we need to first determine the common difference between consecutive terms.

To do this, we can subtract any two consecutive terms, such as the second and first terms:

3.8 - 2 = 1.8

This tells us that the common difference is 1.8.

Now, we can use this common difference to find the missing value, which is the sixth term in the sequence. We can use the formula for the nth term of an arithmetic sequence:

a_n = a_1 + (n - 1)d

where a_n is the nth term, a_1 is the first term, n is the position of the term we want to find, and d is the common difference.

Using this formula with a_1 = 2, d = 1.8, and n = 6, we get:

a_6 = 2 + (6 - 1)1.8

a_6 = 2 + 5(1.8)

a_6 = 2 + 9

a_6 = 11

Therefore, the missing value in the arithmetic sequence is 11.

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The phrase "the number of shoes sold changes inversely with price" suggests that as the price of the shoes rises, so does the number of shoes sold, and vice versa.

We know that 2000 shoes can be sold for $250 in this circumstance. Using the inverse variation formula, we can write: k/Price = number of shoes sold where k is a proportionality constant. We may use the following information to calculate the value of k: 2000 = k/250 When we multiply both sides by 250, we get: k = 500000 In this case, the equation for the inverse variation is: Price/number of shoes sold = 500000 We may use this equation to compute the number of shoes sold at various prices. For instance, if the price is If the price is $300, the number of shoes sold is: The number of shoes sold is 500000/300, which is 1666.67. As a result, at a price of $300, about 1666.67 pairs of shoes would be sold.

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What is the relationship between the number of shoes sold and the price, given that the number of shoes sold varies inversely with the price? If 2,000 shoes are sold at a price of $250, what would be the price of the shoes if 3,000 shoes are sold?

Move all terms not containing the variable from the center section of the inequality.

Answer:

Step-by-step explanation:

150.7083

the surface area of the prism is 706 cm². To find the surface area of a prism, we need to add up the areas of all its faces.    

A prism is a three-dimensional shape that has two parallel and congruent bases that are connected by rectangular sides. Therefore, the surface area of a prism consists of two congruent base areas and the area of all rectangular sides.    

In this case, we have a rectangular prism with a length of 13 cm, a width of 16 cm, and a height of 5 cm. To find the surface area, we can start by calculating the area of the two rectangular bases. The area of a rectangle is found by multiplying its length by its width, so the area of each base is 13 cm x 16 cm = 208 cm².

Next, we need to calculate the area of all four rectangular sides. Since there are four sides, we need to multiply the perimeter of the base (the sum of the lengths of all four sides) by the height of the prism. The perimeter of the base is 2(13 cm + 16 cm) = 58 cm, so the total area of all four rectangular sides is 58 cm x 5 cm = 290 cm².

Finally, we can find the total surface area of the prism by adding the areas of the two bases and the area of all four sides. Therefore, the surface area of the prism is:

Surface area = 2(base area) + (area of all sides)

Surface area = 2(208 cm²) + 290 cm²

Surface area = 706 cm²

Therefore, the surface area of the prism is 706 cm². It is important to understand how to find the surface area of different shapes since it is a common concept in mathematics and is often used in real-life applications, such as calculating the amount of paint needed to cover a surface or the amount of wrapping paper needed to wrap a gift box.

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The expression (1 + 1 / 18)¹⁸ represents the number closest to irrational number e. (Correct choice: A)

This problem ask us to determine what expression is closest to irrational number e. A number is irrational when it cannot be represented by numbers of the form m / n, where m and n are integers and n is non-zero. The number e can be defined by the following limit:

[tex]e = \lim_{x \to \infty} \left(1 + \frac{1}x}\right)^{x}[/tex], where x is a natural number.

According to this definition, the greater the value of x is, the closer the result to irrational number e is. Therefore, the following expression is closest to the given irrational number:

x = 18

e = (1 + 1 / 18)¹⁸

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When the given system of equations does not have a solution, it implies that there is no common point for both the straight lines to intersect. It means that both the straight lines are parallel to each other.

Therefore, the slopes of both lines are equal but their y-intercepts are different. Thus, we can equate the slopes of both lines in the given system of equations as they are equal. Then, we can form an equation to calculate the value of p.Let the given system of equations be:y =[tex]px + 4......(1)y = px + 6......[/tex](2)Equating the slopes of both lines, we have:p =[tex]p => 2p = 10 => p = 5[/tex]Thus, the value of p is 5. We can verify this by substituting the value of p in both the given equations. Therefore, the given system of equations can be written as:y = 5x + 4......(1)y = 5x + 6......([tex]5x + 4......(1)y = 5x + 6......([/tex]2)On comparing equations (1) and (2), we observe that their y-intercepts are different. The equation (1) has y-intercept 4 and equation (2) has y-intercept 6.

Hence, there is no common point for both the lines to intersect. Therefore, the system of equations has no solution.

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Answer:

Step-by-step explanation:

fsffd

Answer: should be -6

Step-by-step explanation:

Set the expression to equal zero

z+6

Solve the equation

z+6+0

State the root

z+-6

The answer to this question is 0.

To add the additive inverse to the product of - 1 and -4, we must first find the product of -1 and -4. The product of -1 and -4 is 4. Now that we have found the product of -1 and -4, we can add the additive inverse to it. The additive inverse of 4 is -4, so we add -4 to 4. 4+ (-4) is equal to 0. Therefore, the answer to this question is 0.

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Answer:

  13/32

Step-by-step explanation:

You want the area of the shaded portion of the unit square shown.

Points B, C, E are shown as equidistant from point F, so will lie on a circle centered at F. The center of that circle is at the point of coincidence of the perpendicular bisectors of BE, BC, and CE.

Without loss of generality, we can let line EF lie on the x-axis such that E is at the origin. Chord EB of the circle has a rise of 1/2 for a run of 1, so a slope of 1/2. Its midpoint is (1, 1/2)/2 = (1/2, 1/4). The perpendicular line through this point will have slope -2, so its equation can be written ...

  y -1/4 = -2(x -1/2)

  y = -2x +5/4

Then the x-intercept (point F) will have coordinates (0, 5/8):

  0 = -2x +5/4 . . . . . y=0 on the x-axis

  2x = 5/4

  x = 5/8

Trapezoid EFCD will have upper base 5/8, lower base 1, and height 1/2. Its area is ...

  A = 1/2(b1 +b2)h

  A = (1/2)(5/8 +1)(1/2) = (1/4)(13/8) = 13/32

The shaded area is 13/32.

__

Additional comment

The point-slope equation of a line through (h, k) with slope m is ...

  y -k = m(x -h)

If the zeros are 2, 8i, and -8i, the the polynomial has factors of (x-2), (x-8i), and (x+8i).

If we multiply those factors, we'll get our polynomial:

    (x-2)·(x-8i)·(x+8i) = (x-2)·(x^2+64)

                               = x^3 - 2x^2 + 64x - 128

As per the unitary method, Nikhil has 21 pencils and Cortez has 63 pencils.

Let's say Nikhil has x number of pencils. Then, according to the problem, Cortez has three times as many pencils as Nikhil. Therefore, Cortez has 3x number of pencils.

Together, they have a total of 84 pencils. So, we can write an equation based on the number of pencils owned by Nikhil and Cortez as follows:

x + 3x = 84

Simplifying the equation, we get:

4x = 84

Dividing both sides by 4, we get:

x = 21

So, Nikhil has 21 pencils. Using the fact that Cortez has three times as many pencils as Nikhil, we can find out how many pencils Cortez has:

Cortez has 3x = 3(21) = 63 pencils.

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Complete Question:

Lance has three times as many pencils as Nick, and they have 84 pencils together. How many pencils does each of them have?

The bread recipe calls for 2 more cups of flour per cup of sugar than the cookie recipe.

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

Explanation:

I'll use this shorthand

Something like "2 cups of sugar" will shorten to "2s".

The cookies need 3s for every 6f.

Therefore we get this ratio

3s : 6f

And we can divide both sides by 3 to end up with

s : 2f

Meaning "each cup of sugar needs 2 cups of flour".

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

Meanwhile, the bread recipe calls for 2s for every 8f.

2s : 8f

2s/2 : 8f/2 .... divide both sides by 2

s : 4f

When making bread, each cup of sugar needs 4 cups of flour. In other words, the amount of flour is quadruple that of the sugar.

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

Recap

These ratios are reduced so that we have "s" on the left side without any numbers attached to it. In other words, we have 1s.

We can see that the bread needs 2 more cups of flour compared to the cookies (since 4f - 2f = 2f). It's important that we reduce those ratios so that we're talking about the same amount of sugar for each food item.

This is why  choice B   is the final answer.

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

An example:

Each food item will use 1 cup of sugar.

The cookies need twice the amount of flour, so the cookies require 2 cups of flour (because of the ratio s:2f mentioned earlier).

The bread needs quadruple the amount of flour compared to sugar. Meaning the bread needs 4 cups of flour (because of the ratio s:4f).

Then subtract to get

(4 cups flour for bread) - (2 cups flour for cookies) = 2 cups flour

As per the given probability, the values of

(a) E (X) is 17.4 ft³, E (X²) is 323.2 ft⁶, and V (X) is 2.16 ft⁶.

To calculate the expected value of X (E(X)), we multiply each possible value of X by its probability and add up the results. Using the probability mass function given, we have:

E(X) = (16)(0.3) + (18)(0.5) + (20)(0.2) = 17.4

This means that on average, the rated capacity of a freezer sold at this store is 17.4 ft³.

To calculate the expected value of X squared (E(X²)), we follow a similar process, but instead of multiplying each possible value of X by its probability, we square each possible value of X and multiply it by its probability before adding up the results. Using the probability mass function given, we have:

E(X²) = (16²)(0.3) + (18²)(0.5) + (20²)(0.2) = 323.2

This means that on average, the square of the rated capacity of a freezer sold at this store is 323.2 ft⁶.

To calculate the variance of X (V(X)), we then add up the results to obtain the variance. Using the probability mass function given, we have:

V(X) = (16 - 17.4)²(0.3) + (18 - 17.4)²(0.5) + (20 - 17.4)²(0.2) = 2.16

This means that the variance of the rated capacity of a freezer sold at this store is 2.16 ft⁶. The square root of the variance is known as the standard deviation, which gives us a measure of the spread of the distribution of X.

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Complete Question:

A certain brand of upright freezer is available in three different rated capacities: 16 ft³, 18 ft³ , and 20 ft³ . Let X = the rated capacity of a freezer of this brand sold at a certain store. Suppose that X has the following probability mass function:

x 16 18 20

p(x) 0.3 0.5 0.2

(a) Compute E (X) , E (X²) , and V (X) .

There are 52 weeks of data included in this frequency distribution.

The given frequency distribution displays the weekly sales of a certain brand of television at an electronics store.

We need to find the number of weeks of data included in this frequency distribution.From the given data, we can see that the frequency column represents the number of televisions sold per week.

To find the number of weeks of data included, we need to sum up the frequency column. Summing up the frequency column gives us:12 + 5 + 5 + 5 + 25 = 52

Therefore, there are 52 weeks of data included in this frequency distribution.

The given frequency distribution displays the weekly sales of a certain brand of television at an electronics store. We need to find the number of weeks of data included in this frequency distribution.

From the given data, we can see that the frequency column represents the number of televisions sold per week. To find the number of weeks of data included, we need to sum up the frequency column. Summing up the frequency column gives us:

12 + 5 + 5 + 5 + 25 = 52

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the given composite shape has a 23 square inch surface area.

The area that any composite shape covers is known as the area of composite shapes. The composite shape is a shape created by joining a small number of polygons to create the desired shape. These shapes or figures can be constructed from a variety of shapes, including triangles, squares, quadrilaterals, etc. To calculate the area of a composite shape, divide it into basic shapes like a square, triangle, rectangle, or hexagon.
A composite shape is essentially a combination of basic shapes. A "composite" or "complex" shape is another name for it.
The dimensions of rectangle ABCD are 2 inches long and 7 inches wide.
The DEFG square's side measures 3 inches.

Using the equation for the composite shape's area,

Area of composite shape = Area of square + Area of rectangle; Area of composite shape = Length, Breadth, and Side 2; Area of composite shape = BC, AB, and DE2; Area of composite shape = 2 x 7 + 32; Area of composite shape = 14 + 9 = 23 square inches.

As a result, the given composite shape has a 23 square inch surface area.
The dimensions of rectangle ABCD are 2 inches long and 7 inches wide.
The DEFG square's side measures 3 inches.

Using the equation for the composite shape's area,

Area of composite shape = Area of square + Area of rectangle; Area of composite shape = Length, Breadth, and Side 2; Area of composite shape = BC, AB, and DE2; Area of composite shape = 2 x 7 + 32; Area of composite shape = 14 + 9 = 23 square inches.

As a result, the given composite shape has a 23 square inch surface area.
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Complete question:- What is the area of the composite shape ?

Answer:

To find the number of people who can have a full serving of trail mix from 50 ounces, we need to divide the total amount of trail mix by the amount of trail mix per serving.

50 ounces of trail mix / 12 ounces per serving = 4.1667 servings

Since we can't have a fraction of a serving, we need to round down to the nearest whole number.

So, Victor can make 4 servings of trail mix from 50 ounces. Therefore, 4 people can have a full serving of trail mix.

Answer: 540 cm²

Step-by-step explanation:To find the area of the dilated rectangle, we need to first find the dimensions of the new rectangle after it has been dilated by a factor of 3.

The length of the new rectangle will be 3 times the original length, which is:

10 cm x 3 = 30 cm

The width of the new rectangle will also be 3 times the original width, which is:

6 cm x 3 = 18 cm

Therefore, the area of the dilated rectangle will be:

30 cm x 18 cm = 540 cm²

Yes, it is possible to have a c2 strictly convex function on a compact domain that is not also strongly convex.

Let's have a look at the following details of it.

A strictly convex function is a function whose Hessian matrix is positive-definite for all arguments. As a result, if f is differentiable and convex, it is strictly convex if and only if its Hessian matrix is positive-definite for all arguments.

The Definition of Strong Convexity: A function is said to be strongly convex if it meets the following criteria:
Let C be a convex subset of a Hilbert space H, and let f:C→ℝ be a continuously differentiable function. There is a positive constant μ such that, for all x,y∈C: f(y)≥f(x)+⟨∇f(x),y−x⟩+μ/2‖y−x‖2

Thus, it is clear from the above-mentioned definitions that it is possible to have a c2 strictly convex function on a compact domain that is not also strongly convex.

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If no two ladies sit together, there are 13,228,800,000 distinct ways to arrange the 11 males and 8 women in a row.

If no 2 women can sit together, then we can think of the men and women as distinct blocks that must alternate. Since there are 11 men and 8 women, there must be 12 positions available for these blocks: M_W_M_W_M_W_M_W_M_W_M_W.

The first block can be filled In 11! Ways (11 men to choose from), the second block can be filled in 8! Ways (8 women to choose from), the third block can be filled in 10! Ways, the fourth block can be filled in 7! Ways, and so on. So the total number of ways to seat the group is:

11! * 8! * 10! * 7! * 9! * 6! * 8! * 5! * 7! * 4! * 6! * 3! * 5! * 2! * 4! * 1! * 3! * 2! * 1!

Simplifying this expression, we get:

(11! * 8! * 10! * 7! * 9! * 6! * 8! * 5! * 7! * 4! * 6! * 3! * 5! * 2! * 4! * 1! * 3! * 2! * 1!) =

(11! * 10! * 9! * 8! * 7! * 6! * 5! * 4! * 3! * 2! * 1!) * (8! * 7! * 6! * 5! * 4! * 3! * 2! * 1!) =

11! * 10! * 9! * 8! * 7! * 6! * 5! * 4! * 3! * 2! * 1! * 8! * 7! * 6! * 5! * 4! * 3! * 2! * 1! =

11! * 10! * 9! * 8! * 7! * 6! * 5! * 4! * 3! * 2! * 8! * 7! * 6! * 5! * 4! * 3! * 2!

= 11! * 10! * 9! * 8! * 7! * 6! * 5! * 4! * 3! * 2! * 8!^2 * 7!

We can evaluate this expression with a calculator to obtain:

(111098765432)(887654327) = 13,228,800,000

Therefore, there are 13,228,800,000 different ways to seat the 11 men and 8 women in a row if no 2 women are to sit together.

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