Find the standard deviation of a sample n = 200 if p = 7. O a. 0.0160 O b.0.0324 O c.0.2640 O d. 0.0016

Option(2) 4 / sqrt(41)  is the value of cos(θ) when point P(4,5) lies on the terminal side of angle C.

To find the value of cos(θ), we need to determine the coordinates of the point P(4,5) on the unit circle.

Let's assume that angle C is in standard position, which means its vertex is at the origin (0,0) and its initial side lies along the positive x-axis. Since point P(4,5) lies on the terminal side of angle C, we can find the length of the hypotenuse and use it to calculate the value of cos(θ).

Using the Pythagorean theorem, we can determine the length of the hypotenuse (r) as follows:

r = sqrt(x^2 + y^2)

= sqrt(4^2 + 5^2)

= sqrt(16 + 25)

= sqrt(41)

Now that we have the length of the hypotenuse, we can calculate the value of cos(θ) using the formula:

cos(θ) = x / r

In this case, x = 4 and r = sqrt(41), so we have:

cos(θ) = 4 / sqrt(41)

This is the value of cos(θ) when point P(4,5) lies on the terminal side of angle C.

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The equation that represents Mike's fitness center charges is C = 30, where C is the cost of a membership in dollars.

This equation indicates that the cost of a membership at Mike's fitness center is a fixed amount of $30 per month, regardless of the number of visits or services used by the member.

This pricing model is commonly used in the fitness industry and provides a simple and straightforward option for those who only need access to basic facilities and equipment. However, for those who require additional services or amenities, such as personal training or specialized classes, a different pricing model may be more appropriate

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The equation that represents Mike's fitness center charges is C = 30, where C is the cost of a membership in dollars.

This equation indicates that the cost of a membership at Mike's fitness center is a fixed amount of $30 per month, regardless of the number of visits or services used by the member.

This pricing model is commonly used in the fitness industry and provides a simple and straightforward option for those who only need access to basic facilities and equipment. However, for those who require additional services or amenities, such as personal training or specialized classes, a different pricing model may be more appropriate

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Tea break in Nkubu High School starts at 10:00am, which is two hours after the start of the school day. The first time the bells ring at the same time for Junior Secondary and Senior Secondary classes is the signal for tea break.

For Junior Secondary (JS) classes, each lesson lasts for 30 minutes. Therefore, if the school starts at 8:00am, the first lesson for JS will end at:

8:00am + 0:30hrs = 8:30am

For Senior Secondary (SS) classes, each lesson lasts for 40 minutes. Therefore, if the school starts at 8:00am, the first lesson for SS will end at:

8:00am + 0:40hrs = 8:40am

Since the first time the bells ring at the same time, the children go out for tea break, the tea break will start at the earliest common multiple of 30 and 40, which is 120.

Therefore, tea break will start 120 minutes after 8:00am, which is:

8:00am + 2:00hrs = 10:00am

So, tea break will start at 10:00am.

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The series ∑(-5)^n/(n^2) is convergent.

The ratio test is a method for determining whether an infinite series converges or diverges. It involves taking the limit of the absolute value of the ratio of successive terms:

lim n→∞ |an+1/an|

If this limit is less than 1, then the series converges. If it is greater than 1, then the series diverges. If it is exactly equal to 1, then the test is inconclusive and another method must be used.

For the series ∑(-5)^n/(n^2), we have:

|a(n+1)/an| = |-5|^(n+1)/(n+1)^2 * n^2/(-5)^n

Simplifying this expression gives:

|a(n+1)/an| = (25(n^2))/((n+1)^2)

Taking the limit as n approaches infinity gives:

lim n→∞ |a(n+1)/an| = 25

Since the limit is greater than 1, the series diverges by the ratio test.

Therefore, we conclude that the series ∑(-5)^n/(n^2) is convergent.

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The products that are defined are given as follows:

LP, LQ.

The products that are not defined are given as follows:

NM, QM.

The multiplication of two matrices is possible when the number of columns of the first matrix is equals to the number of rows of the second matrix.

The dimensions of each matrix are given as follows:

Hence the defined products are:

LP, LQ.

The non-defined products are:

NM, QM.

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The area of the bigger sector and the smaller sector of the circle are 100.53 km² and 50.265 km² respectively.

The area of a sector of a circle is given by the formula A = (θ/360)πr², where θ is the central angle of the sector and r is the radius of the circle. For the bigger sector with a central angle of 225 degrees, the area is,

A₁ = (225/360)π(8 km)² ≈ 100.53 km²

To find the area of the smaller sector, we need to subtract the area of the bigger sector from the total area of the circle, which is,

A_circle = πr² = π(8 km)² ≈ 201.06 km²

The central angle of the smaller sector is,

θ₂ = 360 - 225 = 135 degrees

So the area of the smaller sector is,

A₂ = (135/360)π(8 km)² ≈ 50.265 km²

Therefore, the area of the bigger sector is approximately 100.53 square kilometers and the area of the smaller sector is approximately 50.265 square kilometers.

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The expected number of gumballs Erin needs to pull out of the bag until she gets her favorite color is 8, which is the total number of gumball colors. This is because each gumball has an equal probability of being chosen, regardless of the previous choices. Therefore, Erin has an equal chance of choosing her favorite color on each turn. The probability of not getting her favorite color on the first turn is 7/8. After putting the gumball back and shaking the bag, the probability of not getting her favorite color on the second turn is also 7/8. This pattern continues until Erin finally chooses her favorite color.

The probability of not getting Erin's favorite color on any given turn is 7/8. This is because there are 8 colors in the bag, and only one of them is her favorite. Therefore, the probability of getting her favorite color on any given turn is 1/8.

The expected number of gumballs that Erin needs to pull out of the bag until she gets her favorite color can be calculated using the formula:

E(X) = 1/p

Where X is the number of gumballs Erin needs to pull out, and p is the probability of getting her favorite color on any given turn.

In this case, p = 1/8.

Therefore,

E(X) = 1/(1/8) = 8

Erin is expected to pull out 8 gumballs from the bag before she gets her favorite color. This is because each gumball has an equal probability of being chosen, regardless of the previous choices. Therefore, the expected number of gumballs that Erin needs to pull out until she gets her favorite color is equal to the total number of gumball colors in the bag.

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The expected number of gumballs that Erin will need to pull out of the bag until she gets her favorite color is 8.

Since there are eight different colors of gumballs in the bag, the probability of pulling out Erin's favorite color on any given try is 1/8. Since Erin puts the gumball back in the bag after each try and shakes the bag to remix the gumballs, each try is independent of the others.

To calculate the expected number of tries until Erin gets her favorite color, we can use the formula E(X) = 1/p, where p is the probability of the event happening and X is the number of trials until the event happens. In this case, p = 1/8 since there is a 1/8 chance of pulling out Erin's favorite color on any given try.

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[tex]~~~~~~ \textit{Annual Percent Yield Formula} \\\\ ~~~~~~~~~~~~ \left(1+\frac{r}{n}\right)^{n}-1 ~\hfill \begin{cases} r=rate\to 15\%\to \frac{15}{100}\dotfill &0.15\\ n= \begin{array}{llll} \textit{times it compounds per year}\\ \textit{monthly, thus twelve} \end{array}\dotfill &12 \end{cases} \\\\\\ \left(1+\frac{0.15}{12}\right)^{12}-1\implies 1.0125^{12}-1\approx 0.1608\hspace{5em}\stackrel{ 0.1608 ~~ \times ~~ 100 }{\approx \text{\LARGE 16.08\%}}[/tex]

The new wavelength of the light predominantly reflected is 955.08 nm.

and the thickness of film is 230.37nm.

The minimum thickness of the soap film can be found using the equation for constructive interference of reflected light: 2nt = mλ, where n is the refractive index of the soap, t is the thickness of the film, m is an integer .

(in this case m = 1 for the first order maximum), and λ is the wavelength of the reflected light. Solving for t, we get t = (mλ)/(2n) = (1)(622 nm)/(2(1.35)) = 230.37 nm.

When the soap film is on the sheet of glass, the wavelength of the reflected light changes due to the change in refractive index. The equation for the new wavelength can be found using the formula for the index of refraction: n = c/v, where c is the speed of light in a vacuum and v is the speed of light in the medium.

Rearranging this equation, we get v = c/n. Thus, the new wavelength λ' can be found by multiplying the original wavelength by the ratio of the speeds of light in air and in the soap film on the glass: λ' = λ(c/n_air)/(c/n_soap) = λ(n_soap/n_air) = 622 nm(1.54/1) = 955.08 nm.

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Note that given the above graph, the limit of j (x) as x approaches 3 is 4.

A line begins at an open circle (2, 6) on a coordinate plane and falls via (-2, 2), according to the query. (3, 6) is a full circle. A curve travels from a solid circle (2, 3) to an open circle (3, 4). A line (6, 5) connects the open and closed circles.

The graph shows that the function j(x) has a limit of 4 as the value of x approaches 3.

A graph is a diagram or graphical representation that organizes the portrayal of facts or values.

Note that the points on a graph are typically used to depict the relationships between two or more things.

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Full Question:

Although part of your question is missing, you might be referring to this full question:

See attached image..

Answer:

43,5311

Step-by-step explanation:

Cos A= 6²+10²-7²/2×6×10

this is the cosin theorem in triangle

The area of the triangle T with sides u = ⟨3, 3, 3⟩, v = ⟨6, 0, 6⟩, and u-v is 9√3 square units.

To find the area of the triangle T, we first calculate the cross product of vectors u and v, denoted as u × v. The magnitude of the cross product gives us the area of the corresponding parallelogram, and dividing it by 2 gives us the area of the triangle.

Calculating the cross product:

u × v = |i j k|

|3 3 3|

|6 0 6|

Expanding the determinant:

u × v = (36 - 30)i - (36 - 36)j + (30 - 36)k

= 18i - 0j - 18k

= 18(1, 0, -1)

The magnitude of the cross product:

|u × v| = |18(1, 0, -1)|

= 18|1, 0, -1|

= 18√(1² + 0² + (-1)²)

= 18√2

= 18√3 square units.

Therefore, the area of triangle T is half the area of the parallelogram, which is (1/2)(18√3) = 9√3 square units.

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The length of the hypotenuse is approximately 50.16.

For the slope of the given triangle,

In general slope = Δy(horizontal)/Δx(verticle)

The slope = 4/50 = 1/12.5

This slope is under state regulation since it falls between the standard ratio.

As we can see in the given right angle triangle that is made in the given model,

the base is 50 and the height is 4, so  for the hypotenuse,

Let's label the hypotenuse as 'c.'

We have:

[tex]y^2 = 50^2 + 4^2\\\\y^2 = 2500 + 16\\\\y^2 = 2516[/tex]

To find the value of 'y,' we take the square root of both sides:

y ≈ √(2516)

y ≈ 50.16

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If you are interested in studying whether college major is related to living location preference, the appropriate statistical test to use is the chi-square test. This is because both the college major and living location preference are categorical variables, and the chi-square test is used to analyze the association between two categorical variables.

To perform the chi-square test, you will need to create a contingency table that displays the frequency of individuals in each combination of college major and living location preference. You can then calculate the expected frequencies under the null hypothesis of independence, which assumes that there is no association between the two variables.

The chi-square test statistic is calculated by comparing the observed frequencies to the expected frequencies, and it measures the degree of association between the two variables. If the chi-square test statistic is large enough, it indicates that there is a significant relationship between college major and living location preference.

Overall, the chi-square test is a powerful statistical tool for analyzing the relationship between categorical variables, and it can provide valuable insights into the factors that influence living location preference among college students.

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a) The paired t-test is appropriate for these data as it compares the difference in the amount of rainfall between seeded and unseeded clouds.

The assumption needed to justify this is the  test is that the differences between the paired observations are normally distributed.

b) Based on the paired t-test, with a t-statistic of -3.641 and a p-value of 0.0012, there is strong evidence to reject the null of  hypothesis that there is no difference in the amount of rainfall between seeded and unseeded clouds.

Therefore, we can conclude that cloud seeding has a significant effect on the amount of rainfall.

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The conclusion that is appropriate at a 5% level of significance is this:C. There are statistically significant differences in the mean time to recurrence of depression symptoms for patients in the three treatment groups. this suggests that there is a treatment effect.

The correct conclusion is that the result obtained from the analysis is statistically significant, so the null hypothesis can be rejected. This also means that there are 1 in 20 chances of obtaining an error.

So, for a study checking the relationship between the mean time to recurrence of depression symptoms, the 5% level of significance would demonstrate a relationship.

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According to the information, we can infer that the sum of the squared deviations from the mean is 88.

To find the standard deviation of Jamie's rebounds, we need to calculate the sum of the squared deviations from the mean. In this case, we have to calculate the mean of the data set with the following procedure:

Also, we have to calculate the deviation of each value from the mean. We subtract the mean from each value:

Using the given data set, the deviations from the mean are:

Also, we have to comsider the squared deviations:

To conclude this procedure we sum up the squared deviations to find the sum of the squared deviations from the mean:

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The three expressions ∂r/∂y − ∂q/∂z, ∂p/∂z − ∂r/∂x, and ∂q/∂x − ∂p/∂y represent the components of the curl of the vector field F. So, the curl of the given vector field F can be expressed as Curl(F) = (∂r/∂y − ∂q/∂z)i + (∂p/∂z − ∂r/∂x)j + (∂q/∂x − ∂p/∂y)k.

Using the given values of p, q, and r, we can find the partial derivatives of each component with respect to x, y, and z. Then, we can substitute these values into the expression for the curl to obtain the final answer. So, evaluating the partial derivatives and substituting into the expression for the curl gives Curl(F) = (-48xyz)i + (24x^2z - 24xy^2)j + (16xy - 16yz^2)k.

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The end behavior of the function f(x) = -2∛x can be determined by looking at the highest degree term in the function, which is ∛x. Since the cube root of a negative number is also negative, as x approaches negative infinity, f(x) approaches negative infinity as well. Similarly, as x approaches positive infinity, f(x) approaches positive infinity. Therefore, the correct answer is:

As x → –∞, f(x) → –∞, and as x → ∞, f(x) → ∞.

95% confidence that the population means lies between $110.25 ($120 - $9.75) and $129.75 ($120 + $9.75).

To estimate the population mean, we can use the sample mean as an unbiased estimate. Therefore, the estimated population mean is also $120. However, to calculate the margin of error for this estimate, we can use the formula:
The margin of error = (z-score) x (standard deviation / square root of sample size)
Since the population is assumed to be normal, we can use the z-distribution. For a 95% confidence level, the z-score is 1.96. Substituting the given values, we get:
Margin of error = 1.96 x (25 / √64) = 9.75
Therefore, we can say with 95% confidence that the population mean lies between $110.25 ($120 - $9.75) and $129.75 ($120 + $9.75).
It's important to note that this is only an estimate and the true population mean could still be outside of this range. However, with a 95% confidence level, we can be fairly certain that our estimate is accurate within this range.

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Answer:179.5

Step-by-step explanation:

The value of composition of function is 26.

The given function is,

f(x) = 3x -9

g(x) = x²

We know that,

A function composition is an operation in which two functions, f and g, generate a new function, h, in such a way that h(x) = g(f(x)). This signifies that function g is being applied to the function x. So, in essence, a function is applied to the output of another function.

Therefore,

gof(x)  = g(f(x))

          = (3x -9)²

          = 9x² -56x + 81

Now put x = 5

Then,

gof(5) = 9x² -56x + 81

         = 26

Hence,

gof(5)  = 26

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To find the price that will give the greatest profit, we need to maximize the profit function, which is given by the difference between the revenue and the cost. Revenue is equal to the price multiplied by the number of copies sold, while cost is equal to the cost per copy multiplied by the number of copies sold. So, profit can be expressed as p(280,000 - 14,000p) - 4(280,000 - 14,000p).

To find the price that will maximize profit, we need to take the derivative of the profit function with respect to p, set it equal to zero, and solve for p. After some algebraic manipulation, we get -28p^2 + 280p - 1120 = 0. Solving for p using the quadratic formula, we get p = 5 or p = 10.

To determine which value of p will give the greatest profit, we need to evaluate the profit function at both values of p. When p = 5, profit is equal to $420,000, and when p = 10, profit is equal to $408,000. Therefore, the price that will give the greatest profit is $5.

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Educational inequality can be measured in different ways, including by looking at enrollment rates, completion rates, standardized test scores, and educational attainment levels.

Educational inequality refers to the unequal distribution of educational opportunities and resources among different groups of people within a society or country. This can manifest in various forms, including unequal access to education, disparities in educational outcomes, and differences in educational quality.

Educational inequality can be measured in different ways, including by looking at enrollment rates, completion rates, standardized test scores, and educational attainment levels. Other factors such as socio-economic status, race, ethnicity, and gender can also be used to analyze educational inequality.

Measuring the degree of educational inequality in a country is important for several reasons. First, it helps identify disparities in access to education and highlights groups that may be marginalized or disadvantaged. Second, it can provide insights into the effectiveness of educational policies and programs aimed at reducing inequality. Finally, reducing educational inequality is crucial for promoting social mobility, reducing poverty, and achieving economic growth and development.

In summary, educational inequality is a significant issue that can have far-reaching consequences for individuals and societies. Measuring and addressing educational inequality is important for promoting equity, social justice, and sustainable development.

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The matrix a = [5k-9, -1; -1, 5k-9] has one real eigenvalue of algebraic multiplicity 2 when k = 2 or k = 7/5.

The eigenvalues of a 2x2 matrix can be found using the characteristic equation, which is given by: det(a - λI) = 0

where λ is the eigenvalue and I is the identity matrix of the same size as a. For the matrix a, this equation becomes:

(5k - 9 - λ)^2 - 1 = 0

Expanding this equation gives:

25k^2 - 90k + 80 - 10λk + λ^2 - 1 = 0

Simplifying this equation gives:

λ^2 - 10kλ + 25k^2 - 90k + 79 = 0

For a real eigenvalue of algebraic multiplicity 2, the discriminant of this quadratic equation must be zero. Therefore, we have:

(-10k)^2 - 4(25k^2 - 90k + 79) = 0

Simplifying this equation gives:

k^2 - 9k + 20 = 0

Factoring this equation gives:

(k - 2)(k - 7/5) = 0

Therefore, the matrix a has one real eigenvalue of algebraic multiplicity 2 when k = 2 or k = 7/5.

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The solution for the trapezoid with median is:

1. If MY || LE, then MY || IK

2. MY = 52 cm

3. MY = 109 cm

4. IK = 10 cm

5. LE = 45 cm

The trapezoid mid-segment or median theorem states that "a line connecting the midpoints of the non-parallel sides (legs) is parallel to the bases". It measures half the sum of lengths of the bases. That is:

m = 1/2 (b₁ + b₂)

where b₁ and b₂ are the bases of the trapezoid.

No. 1

Since the midpoints of the non-parallel sides (legs) is parallel to the bases. Thus:

If MY || LE, then MY || IK

Note: || means parallel

No. 2

In this case, the midpoint is MY. IK and LE are the bases. Thus:

MY = 1/2 * (IK + LE)

MY = 1/2 * (56 + 48)

MY = 52 cm

No. 3

MY = 1/2 * (142 + 76)

MY = 109 cm

No. 4

45.7 = 1/2 * (IK + 85)

45.7 * 2 = IK + 85

95 = IK + 85

IK = 95 - 85

IK = 10 cm

No. 5

37.5 = 1/2 * (120 + LE)

37.5 * 2 = 120 + LE

75 = 120 + LE

LE = 120 - 75

LE = 45 cm

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The solution is:

Cash received on account =$ 6381.63

Explanation:

The payment terms 3/10, n/30 implies that if  Guzman Housewares pays within the next 10 days of purchase, it will receive a discount of 3% of the net invoice amount and that the latest date for the settlement of bill is within the next 30 days of purchase.

The latest payment date to qualify for discount is May 27th i.e ( May 12 + 10) but the payment was made by May 20th , so this qualifies Guzman Housewares for the discount.

The net amount of cash received by Blue Company is  computed as follows:

Net sales = Gross sales - Returns inwards ( Sales returns)

              =  6,897 -  318 =$6,579

Cash received on account =  Net sales - discount

                           = =$6,579    - (3%×6,579) = $6,381.63

Cash received on account =$ 6381.63

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complete question:

Q 8.21: On May 12, 2017, Hudson Merchandise sold merchandise on account to Guzman Housewares for $6,897, terms 3/10, n/30. If Guzman returns merchandise with a sale price of $318 on May 15, 2017, what amount will Hudson record in their Cash account if Guzman pays in full on May 20, 2017

The dimensions of the rectangular storage room are 13 feet by 5 feet.

Let's start by using the formula for the area of a rectangle, which is:
Area = Length x Width
We know that the area of the room is 65 square feet, so we can write:
65 = Length x Width
Now, we also know that the length of the room is 8 feet longer than its width. We can represent this using the equation:
Length = Width + 8
We can substitute this expression for length into our equation for the area, giving:
65 = (Width + 8) x Width
Expanding the brackets, we get:
65 = Width^2 + 8Width
Rearranging this equation into standard quadratic form (with the squared term first), we get:
Width^2 + 8Width - 65 = 0

To solve for the width, we can use the quadratic formula:
Width = (-b ± sqrt(b^2 - 4ac)) / 2a
In this case, a = 1, b = 8, and c = -65. Plugging these values in, we get:
Width = (-8 ± sqrt(8^2 - 4(1)(-65))) / 2(1)

Simplifying under the square root, we get:
Width = (-8 ± sqrt(324)) / 2
Width = (-8 ± 18) / 2
This gives us two possible solutions for the width:
Width = 5 or Width = -13

Since the width of a room cannot be negative, we can discard the second solution and conclude that the width of the room is 5 feet.
Now, to find the length, we can use the expression we derived earlier:
Length = Width + 8
Substituting in the value we just found for the width, we get:
Length = 5 + 8
Length = 13

Therefore, the dimensions of the rectangular storage room are 13 feet by 5 feet.

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Therefore, the probability of drawing a green card is 0.0769 or 7.69%.

a. To determine the number of elements in the sample space, we need to know the number of cards in the deck and the possible outcomes for each card. Let's assume that the deck contains 52 cards with four different suits (clubs, diamonds, hearts, spades) and 13 cards in each suit (ace, 2, 3, 4, 5, 6, 7, 8, 9, 10, jack, queen, king).

The possible outcomes for each card are the suit and the rank. Therefore, there are 4 possible outcomes for the suit and 13 possible outcomes for the rank. Using the multiplication principle, we can determine the number of elements in the sample space by multiplying the number of possible outcomes for the suit by the number of possible outcomes for the rank:

Number of elements in the sample space = 4 x 13 = 52

Therefore, there are 52 elements in the sample space.

b. To find the probability of drawing a green card, we need to know how many green cards there are in the deck and how many cards there are in total. Let's assume that there are 4 different colors of cards in the deck: red, blue, yellow, and green. We also assume that there are 13 cards of each color in the deck.

Therefore, there are 4 green cards in the deck. The probability of drawing a green card can be calculated by dividing the number of green cards by the total number of cards in the deck:

Probability of drawing a green card = number of green cards / total number of cards

Probability of drawing a green card = 4 / 52

Probability of drawing a green card = 0.0769 or 7.69%

Therefore, the probability of drawing a green card is 0.0769 or 7.69%.

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To find the total area of the six sides of a cube, we can calculate the sum of the areas of each side. Since the cube has equal sides, we only need to find the area of one side and multiply it by 6.

The area of one side of a cube is given by the formula A = s^2, where s represents the length of each side. In this case, the length of each side is x-4. Therefore, the area of one side is (x-4)^2.

To find the total area of the six sides, we multiply the area of one side by 6:

Total area = 6 * (x-4)^2

So, the polynomial that represents the total area of the six sides of the cube with edges of length x-4 is 6 * (x-4)^2.

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