simplify squareroot of 192

The value of the side x is 8cm

Note that the different trigonometric identities are;

From the information shown in the diagram, we have that;

The angle, theta = 60 degrees

the Hypotenuse side = xcm

the adjacent side = 4cm

Using the cosine identity, written as;

cos θ  = adjacent/hypotenuse

cos 60 = 4/x

cross multiply

x = 8cm

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The recommended model for trend and seasonality is the Seasonal-Trend Decomposition using Loess (STL) regression model.

The variables in the model are time (t), trend (Tt), seasonality (St), and residual (Rt).

The number of independent variables depends on the frequency of data and degree of seasonality, and can be determined by the formula 2q x m.

To develop a model for trend and seasonality, we can use a regression model known as the Seasonal-Trend Decomposition using Loess (STL).

The variables in the model are:

The number of independent variables in the regression depends on the frequency of the data and the degree of seasonality. If the data has a daily frequency and exhibits daily seasonality, the regression model will have 365 independent variables (one for each day of the year). If the data has a monthly frequency and exhibits monthly seasonality, the regression model will have 12 independent variables (one for each month of the year).

The number of independent variables can be determined by the formula 2q × m, where q is the number of harmonics (usually set to 1 or 2) and m is the number of observations per season (e.g., 12 for monthly data).

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Answer:

2n+3 for ≥0

Step-by-step explanation:

the formula that generate the sequence is

 2n+3

the difference between the arithmetic sequence is 2

2(0)+3

0+3=3

2(1)+3

2+3=5

2(2)+3

4+3=7

2(3)+3

6+3=9

n≥0 means n can start from 0 till infinity

if n is substitute into the formula, it will give the arithmetic sequence which means formula generated is correct



Hope this helps!

The dy/dx of the equation  x⁴ * xy - y⁴ = x * y² is (y² - 4x³ * xy) / (x⁴ - 4y³ + 2xy).

To find dy/dx of the given equation x⁴ * xy - y⁴ = x * y², we'll first differentiate both sides of the equation with respect to x.

Using the product rule for differentiation (uv)' = u'v + uv', we have:

d/dx (x⁴ * xy) - d/dx (y⁴) = d/dx (x * y²)

Differentiating each term, we get:

(x⁴)'(xy) + (x⁴)(xy)' - (y⁴)' = (x)'(y²) + (x)(y²)'

Now, we'll find the derivatives:

4x^3 * xy + x⁴ * (y + x(dy/dx)) - 4y³(dy/dx) = y² + x * (2y * (dy/dx))

Now, we'll solve for dy/dx. First, let's collect the terms containing dy/dx on one side:

x⁴(dy/dx) - 4y³dy/dx) + 2xy(dy/dx) = y² - 4x³ * xy

Next, we factor out dy/dx:

dy/dx (x⁴ - 4y³ + 2xy) = y² - 4x³ * xy

Finally, we'll divide both sides by the expression in parentheses to isolate dy/dx:

dy/dx = (y² - 4x³ * xy) / (x⁴ - 4y³ + 2xy)

This is the expression for dy/dx.

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Answer:

Step-by-step explanation:

To convert the equation r sin theta = 4 to Cartesian coordinates, we use the identities r^2 = x^2 + y^2 and y/x = tan theta. Substituting r sin theta = 4 into these identities, we get:

x^2 + y^2 = (r sin theta)^2 = 16

y/x = sin theta/ cos theta = tan theta

Squaring both sides of the second equation and substituting y^2/x^2 = 1 + tan^2 theta, we get:

y^2/x^2 = 1 + (y/x)^2

x^2 + y^2 = 16(1 + (y/x)^2)

Simplifying this equation, we get:

x^2 + y^2 = 16 + 4y^2/x^2

Multiplying both sides by x^2, we get:

x^2 y^2 + y^2 = 16x^2 + 4y^2

Bringing all the terms to one side, we get:

x^2 y^2 - 16x^2 = 3y^2

This is the Cartesian equation of the curve. To describe the curve, we can rewrite this equation as:

y^2/x^2 - 16/x^2 = 3

This is the equation of a hyperbola with center at the origin, vertical axis, and asymptotes given by y/x = ±4/sqrt(3).

Answer:

a).141.5 b).125.8 c).875.4

a).34 b).154.5 c). 49

Step-by-step explanation:

to find the height you would simply divide the volume by pie times the radius squared.      

The total gain at the end of the second year for both accounts combined is $509.09.

We have,

Amount saved = $8500

40% of 8500 is saved in saving account = 0.4 x 8500 = $3400

Remainder amount in stock plan = 8500 - 3400 = 5100

Working for savings plan

A = P(1 + r/n[tex])^{nt[/tex]

A = 3400(1 + 0.042/1)²

A = $3691.60

So, we gain = 3691.6 - 3400 = $291.6

Working for stock plan:  

The stock plan decreases 3% in the first year

= 5100 x 0.97

= $4947

and increases 7.5% in the second year.

= 4947 x 1.75

= $5318.03

So, we gain = 5318.03 - 5100 = $218.03

Thus, the total gain is

= 291.06 + 218.03

= $509.09

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The population whose properties are analyzed by the data can be described as households in City A.

Given numerical information is,

58% of households in City A were online.

We have to describe what describes this numerical information.

Here, it is described that a certain percent of households in a city A are online.

So the description is about the households of the city A.

So this is the population.

Hence the best description is households in City A.

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The Cartesian product B × A is:
B × A = {(y, a), (y, b), (y, c), (y, d), (z, a), (z, b), (z, c), (z, d)}

To find the Cartesian product B × A, where A = {a, b, c, d} and B = {y, z}, we need to create ordered pairs with the first element from set B and the second element from set A. The Cartesian product B × A is:

B × A = {(y, a), (y, b), (y, c), (y, d), (z, a), (z, b), (z, c), (z, d)}

In this case, you have two sets: A = {a, b, c, d} and B = {y, z}. To find the Cartesian product B × A, you would take each element from set B and pair it with every element in set A. Let's go through it step by step:

Start with set B = {y, z}.

Take the first element from set B, which is y.

Pair y with each element in set A, which is {a, b, c, d}, to get the following ordered pairs: (y, a), (y, b), (y, c), and (y, d).

Next, take the second element from set B, which is z.

Pair z with each element in set A, which is {a, b, c, d}, to get the following ordered pairs: (z, a), (z, b), (z, c), and (z, d).

Collect all the ordered pairs obtained in the previous steps to get the Cartesian product B × A, which is {(y, a), (y, b), (y, c), (y, d), (z, a), (z, b), (z, c), (z, d)}.

The Cartesian product B × A is indeed {(y, a), (y, b), (y, c), (y, d), (z, a), (z, b), (z, c), (z, d)}, which consists of all possible ordered pairs with the first element from set B and the second element from set A.

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The Cartesian product B × A is:
B × A = {(y, a), (y, b), (y, c), (y, d), (z, a), (z, b), (z, c), (z, d)}

To find the Cartesian product B × A, where A = {a, b, c, d} and B = {y, z}, we need to create ordered pairs with the first element from set B and the second element from set A. The Cartesian product B × A is:

B × A = {(y, a), (y, b), (y, c), (y, d), (z, a), (z, b), (z, c), (z, d)}

In this case, you have two sets: A = {a, b, c, d} and B = {y, z}. To find the Cartesian product B × A, you would take each element from set B and pair it with every element in set A. Let's go through it step by step:

Start with set B = {y, z}.

Take the first element from set B, which is y.

Pair y with each element in set A, which is {a, b, c, d}, to get the following ordered pairs: (y, a), (y, b), (y, c), and (y, d).

Next, take the second element from set B, which is z.

Pair z with each element in set A, which is {a, b, c, d}, to get the following ordered pairs: (z, a), (z, b), (z, c), and (z, d).

Collect all the ordered pairs obtained in the previous steps to get the Cartesian product B × A, which is {(y, a), (y, b), (y, c), (y, d), (z, a), (z, b), (z, c), (z, d)}.

The Cartesian product B × A is indeed {(y, a), (y, b), (y, c), (y, d), (z, a), (z, b), (z, c), (z, d)}, which consists of all possible ordered pairs with the first element from set B and the second element from set A.

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The value of x that make the area of the compound shape as 24 mm² is 1.5 mm

An equation is an expression that can be used to show the relationship between two or more numbers and variables using mathematical operators.

The area of a figure is the amount of space it occupies in its two dimensional state.

The area of the compound shape is 24 mm².

For the first rectangle:

Area = x * (2x + 6) = 2x² + 6x

For the second rectangle:

Area = x * (7) = 7x

The area of compound shape = 2x² + 6x + 7x = 2x² + 13x

Since the area is 24 mm², hence:

2x² + 13x = 24

2x² + 13x - 24 = 0

x = 1.5 mm

The value of x is 1.5 mm

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The value of the matrix is in the given image below:

A matrix is a rectangular arrangement of numbers, symbols, or expressions that are organized into rows and columns.

Its size is described as m x n – where m stands for the number of rows while n denotes the number of columns.

Mathematicians, physicists, engineers, and even computer scientists frequently utilize matrices in order to manage data, fix equations, convert geometric shapes, and explore intricate systems.

Additionally, they are an essential tool when it comes to linear algebra and machine learning.

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A CR less than or equal to 0.1 is considered acceptable, indicating a consistent set of judgments in comparing the criteria. If the CR is greater than 0.1, it is advised to revise the pairwise comparisons to improve consistency.

The Consistency Ratio (CR) in the context of the GEAR Matrix (which is related to bikes, not fruit) measures the level of consistency in judgments made when comparing criteria in a decision-making process, such as the Analytic Hierarchy Process (AHP). To calculate the CR for the Criteria in the GEAR Matrix, follow these steps:

1. Determine the pairwise comparison matrix by comparing the importance of each criterion against the others.
2. Calculate the weights of each criterion by normalizing the columns and finding the average for each row.
3. Multiply the pairwise comparison matrix by the weight vector to obtain a new vector.
4. Divide each element of the new vector by its corresponding weight to obtain the Consistency Vector.
5. Calculate the average of the Consistency Vector to get the Consistency Index (CI).
6. Divide the CI by the Random Index (RI) for the specific matrix size (this value can be found in AHP literature) to obtain the Consistency Ratio (CR).

A CR less than or equal to 0.1 is considered acceptable, indicating a consistent set of judgments in comparing the criteria. If the CR is greater than 0.1, it is advised to revise the pairwise comparisons to improve consistency.

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The circumference of a circle with diameter of 21 cm is given as follows:

C = 65.97 cm.

The circumference of a circle of radius r is given by the equation presented as follows:

[tex]C = 2\pi r[/tex]

The radius of a circle represents the distance between the center of the circle and a point on the circumference of the circle, while the diameter of the circle is the distance between two points on the circumference of the circle that pass through the center. Hence, the diameter’s length is twice the radius length.

The radius is half the diameter of 21 cm, hence it is given as follows:

r = 10.5 cm.

Then the circumference of the circle is given as follows:

C = 2π x 10.5

C = 65.97 cm.

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The gradient of a function points in the direction in which the function increases the fastest because it represents the direction of greatest increase of the function.

The gradient of a function is a vector that points in the direction of the steepest increase of the function at a particular point. This means that if we move in the direction of the gradient, the value of the function increases the fastest.

To understand why this is true, let's consider the definition of the gradient. The gradient of a function f(x) is defined as a vector of partial derivatives:

∇f(x) = (∂f/∂x1, ∂f/∂x2, ..., ∂f/∂xn)

Each component of the gradient vector represents the rate of change of the function with respect to the corresponding variable. In other words, the gradient tells us how much the function changes as we move a small distance in each direction.

When we take the norm (or magnitude) of the gradient vector, we get the rate of change of the function in the direction of the gradient. This means that if we move in the direction of the gradient, the value of the function changes the fastest, because this is the direction in which the function is most sensitive to changes in the input variables.

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We cannot say with absolute certainty that the true relationship between the LHS and RHS variables is not influenced by other factors.

If we say that an estimate is statistically significant, it means that the difference or relationship observed between the left-hand side (LHS) variable and the right-hand side (RHS) variable is unlikely to have occurred by chance alone.

However, it does not necessarily mean that we are 100% certain of the true relationship between the LHS and RHS variables. There may still be other factors or variables that were not accounted for in the analysis that could affect the relationship between the two variables.

Therefore, we cannot say with absolute certainty that the true relationship between the LHS and RHS variables is not influenced by other factors.

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Answer:

x = 10 , arc GF = 65°

Step-by-step explanation:

the measure of the chord- chord angle GEF is half the sum of the arcs intercepted by the angle and its vertical angle, that is

∠ GEF = [tex]\frac{1}{2}[/tex] (GF + HL) , so

60 = [tex]\frac{1}{2}[/tex] ( 5x + 15 + 55) ← multiply both sides by 2 to clear the fraction

120 = 5x + 70 ( subtract 70 from both sides )

50 = 5x ( divide both sides by 5 )

10 = x

Then

arc GF = 5x + 15 = 5(10) + 15 = 50 + 15 = 65°

a) At least 5,675 adults.

b) if we use the results from the 2014 survey, we still need to survey at least 5,675 adults.

c) It does not have much of an effect on the sample size.

Sample size refers to the number of observations or participants included in a study or survey. In statistical analysis, the size of the sample is an important consideration as it can affect the accuracy and reliability of the results. A larger sample size generally leads to more precise estimates and increased statistical power, while a smaller sample size may be more susceptible to sampling errors and variability.

(a) To find the minimum sample size needed, we can use the formula:

n = (z² × p × (1-p)) / E²

where z is the z-score corresponding to the desired confidence level (99%), p is the estimated proportion of e-cigarette users (3.65% or 0.0365), and E is the desired margin of error (3 percentage points or 0.03).

Plugging in these values, we get:

n = (2.576² × 0.0365 × 0.9635) / 0.03²

n = 5,674.85

Rounding up to the nearest integer, we get:

n = 5,675

Therefore, we need to survey at least 5,675 adults to obtain today's e-cigarette usage rate with a 99% confidence level and a margin of error of 3 percentage points.

(b) If we use the results from the 2014 survey, we can estimate the population proportion of e-cigarette users as 0.0365. Using the same formula as above, we get:

n = (2.576² × 0.0365 × 0.9635) / 0.03²

n = 5,674.85

Rounding up to the nearest integer, we get:

n = 5,675

Therefore, even if we use the results from the 2014 survey, we still need to survey at least 5,675 adults to obtain today's e-cigarette usage rate with a 99% confidence level and a margin of error of 3 percentage points.

(c) The use of the results from the 2014 survey does not have much of an effect on the sample size. This is because the desired confidence level and margin of error are fixed, and the estimated proportion from the 2014 survey is relatively close to the true proportion (since e-cigarette use is still a relatively new phenomenon).

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The limit doesn't exist for lim(x,y)→(0,0) [(x² + 3y²)/(2x² + 23y²)]² because the limit along the x-axis and the limit along the y-axis give different values.

To find the limit of lim(x,y)→(0,0) [(x² + 3y²)/(2x² + 23y²)]², we can first simplify the expression inside the parentheses by dividing both the numerator and denominator by y²:

[(x²/y² + 3)/(2(x/y)² + 23)]²

As (x,y) approaches (0,0), both x and y approach 0, so x²/y² approaches 0/0, which is an indeterminate form. To resolve this, we can use L'Hôpital's rule, taking the partial derivative with respect to x and y:

lim(x,y)→(0,0) [(x²/y² + 3)/(2(x/y)² + 23)]²

= [lim(x,y)→(0,0) 2(x/y)² / 4(x²/y²) ]² (using L'Hôpital's rule)

= [lim(x,y)→(0,0) x² / 2y² ]²

= [lim(x,y)→(0,0) (x/y)² / 2 ]²

Since (x,y) approaches (0,0), we have (x/y)² approaching 0/0, another indeterminate form. Using L'Hôpital's rule again, we get:

lim(x,y)→(0,0) (x/y)² / 2

= lim(x,y)→(0,0) 2x / (2y)

= lim(x,y)→(0,0) x / y

Now, we have two paths to consider: approaching along the x-axis (y = 0) and approaching along the y-axis (x = 0). Along the x-axis, the limit is:

lim(x,0)→(0,0) x / 0

which does not exist, since the expression approaches infinity as x approaches 0 from either direction. Similarly, along the y-axis, the limit is lim(0,y)→(0,0) 0 / y which is 0.

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The regular expression "10" matches any string that starts with zero or more ones followed by zero or more zeros. The regular expression "(10 u 0)(1 u 10)" matches any string that starts with zero or more occurrences of "10" or "0", followed by zero or more occurrences of "1" or "10".

The regular expression 10 matches any string that contains zero or more ones followed by zero or more zeros. This includes empty strings as well as strings containing only ones or only zeros, as well as any combination of ones and zeros.

The regular expression (10 u 0)(1 u 10) matches any string that starts with zero or more occurrences of the string "10" or "0", followed by zero or more occurrences of either "1" or "10".

This regular expression matches strings such as "10", "1010", "0101", "001110", and so on. It allows for any number of occurrences of "0" between any pair of "1" or "10".

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Mean of x for sample size is [28.34, 32.66]

The closest option is (c) 30.5.

The mean of the sample means will be the same as the population mean, which is 30.5.

The standard error of the mean, which is the standard deviation of the sampling distribution of the mean, can be calculated as:

SE = σ / sqrt(n)

where σ is the population standard deviation and n is the sample size.

SE = 3.5 / sqrt(10) = 1.108

The mean of x for sample size of 10 can be calculated as:

x = μ ± z*(SE)

where μ is the population mean, z is the z-score corresponding to the desired level of confidence (we'll assume 95% here), and SE is the standard error of the mean.

Using a z-score of 1.96 for a 95% confidence interval, we have:

x = 30.5 ± 1.96*(1.108) = [28.34, 32.66]

Therefore, the closest option is (c) 30.5.

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A particular solution of the given differential equation y'' + 3y' + 4y = 8x + 2 can be found using the method of undetermined coefficients. The correct answer is: a. y_p = 2x + 1

The correct answer is b. y_p = 8x + 2. To find a particular solution of the differential equation, we can use the method of undetermined coefficients. Since the right-hand side of the equation is a polynomial of degree 1 (8x + 2), we assume that the particular solution has the same form, i.e. y_p = Ax + B. We then substitute this into the differential equation and solve for the constants A and B. Plugging in y_p = Ax + B, we get:

y" + 3y' +4y = 8x + 2
2A + 3(Ax + B) + 4(Ax + B) = 8x + 2
(2A + 3B) + (7A + 4B)x = 8x + 2

Since the left-hand side and right-hand side must be equal for all values of x, we can equate the coefficients of x and the constant terms separately:

7A + 4B = 8  (coefficient of x)
2A + 3B = 2  (constant term)

Solving these equations simultaneously, we get A = 8 and B = 2/3. Therefore, the particular solution is y_p = 8x + 2.

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If the relative intensity of a quake is multiplied by 10t, the Richter scale reading increases by t units.

The Richter scale measures the intensity of earthquakes logarithmically. When the relative intensity of a quake is multiplied by 10t, it means that the earthquake's amplitude increases by a factor of 10t. Since the Richter scale is based on the logarithm (base 10) of the amplitude, the scale reading will increase by t units.

This is because the logarithm of a product (10t * original amplitude) is equal to the sum of the logarithms (log10(10t) + log10(original amplitude)). Since log10(10t) = t, the Richter scale reading increases by t units when the relative intensity is multiplied by 10t.

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If the relative intensity of a quake is multiplied by 10t, the Richter scale reading increases by t units.

The Richter scale measures the intensity of earthquakes logarithmically. When the relative intensity of a quake is multiplied by 10t, it means that the earthquake's amplitude increases by a factor of 10t. Since the Richter scale is based on the logarithm (base 10) of the amplitude, the scale reading will increase by t units.

This is because the logarithm of a product (10t * original amplitude) is equal to the sum of the logarithms (log10(10t) + log10(original amplitude)). Since log10(10t) = t, the Richter scale reading increases by t units when the relative intensity is multiplied by 10t.

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The remaining sides and angles of triangle ABC are as follows: B = 29°, BC ≈ 17.19, and AC ≈ 9.97.

To determine the remaining sides and angles of triangle ABC:

Follow these steps:

A = 130° 50', C = 20° 10', and AB = 6,

Step 1: Determine angle B.
Since the sum of angles in a triangle is always 180°, you can find angle B by subtracting angles A and C from 180°.
B = 180° - (130° 50' + 20° 10')
B = 180° - 151°
B = 29°

Step 2: Use the Law of Sines to find sides BC and AC.
The Law of Sines states that the ratio of the length of a side of a triangle to the sine of the angle opposite that side is the same for all three sides of the triangle.

We can write this as:

BC / sin(A) = AC / sin(B) = AB / sin(C)

Step 3: Solve for side BC.
Using the known values, we can set up an equation to find BC:
BC / sin(130° 50') = 6 / sin(20° 10')
BC = (6 * sin(130° 50')) / sin(20° 10')

Step 4: Solve for side AC.
Using the known values, we can set up an equation to find AC:
AC / sin(29°) = 6 / sin(20° 10')
AC = (6 * sin(29°)) / sin(20° 10')

Step 5: Calculate the values of BC and AC.
BC ≈ (6 * sin(130° 50')) / sin(20° 10') ≈ 17.19
AC ≈ (6 * sin(29°)) / sin(20° 10') ≈ 9.97

In conclusion, the remaining sides and angles of triangle ABC are as follows:
B = 29°, BC ≈ 17.19, and AC ≈ 9.97.

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(a) An example of a random variable X whose expected value is 5, but the probability that X = 5 is 0 is a dice roll, where X represents the number rolled. If the dice is fair, then the expected value of X is (1+2+3+4+5+6)/6 = 3.5. However, if we assign a probability of 0.1667 to each number from 1 to 4 and a probability of 0 to 5 and 6, then the expected value of X is still 5, but the probability that X = 5 is 0.

(b) An example of a random variable Y whose expected value is negative, but the probability that Y is positive is close to 1 is the temperature difference between two cities in winter. Let Y represent the temperature difference in Celsius degrees between City A and City B on a given day. We know that City A is colder than City B in winter, so the expected value of Y is negative. However, if we take the absolute value of Y, which represents the temperature difference regardless of direction, then the expected value of |Y| is positive. Moreover, if the temperature difference between the two cities is small, then the probability that Y is positive (i.e. City B is warmer) is close to 1.

(c) The statement E( 1/ Z ) = 1 / E(Z) is not always true. We can prove this by giving a counterexample. Let Z be a random variable that takes the value 1 with probability 1/2 and the value 2 with probability 1/2. Then, E(Z) = (1+2)/2 = 1.5. However, E(1/Z) = (1/1)(1/2) + (1/2)(1/2) = 3/4, and 1/E(Z) = 2/3. Therefore, E(1/Z) ≠ 1/E(Z) in this case.

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The series is a divergent p-series with p = 1/6.

To determine whether the given series is convergent or divergent, we first need to understand the series itself. The series you've provided is:

Σ (n=1 to infinity) (1 / n√6)

This series is a p-series with p equal to the exponent of n in the denominator. In this case, p = 1/6 (since n√6 = n^(1/6)).

A p-series converges if p > 1 and diverges if p ≤ 1. In this case, p = 1/6, which is less than 1.

Your answer: The series is a divergent p-series with p = 1/6.

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The support of the association rule is 0.0895. The closest answer choice is (B) 0.0895.

What is Association Rule?

An association rule is a relationship between two or more variables or items that are frequently found together in a dataset. In data mining and machine learning, association rules are used to discover interesting relationships and patterns among large sets of data. Association rules are often expressed in the form "if X, then Y" where X and Y are sets of items or variables, and the rule indicates that there is a strong correlation between X and Y. The strength of an association rule is typically measured in terms of its support and confidence, which are statistical measures that indicate how often the rule is true in the dataset.

According to the given information:

The support of an association rule is defined as the proportion of transactions in the dataset that contain both the antecedent and the consequent of the rule.

In this case, the antecedent is "coffee, ice cream, and chips", and the consequent is not specified. Therefore, we can assume that we are interested in the support of the rule "if a transaction contains coffee, ice cream, and chips, then it also contains [some item]".

The support of this rule is equal to the number of transactions that contain coffee, ice cream, and chips, divided by the total number of transactions in the dataset. Therefore, the support of the rule is:

support = 895 / 10,000

support = 0.0895

Rounding to four decimal places, the support of the association rule is 0.0895. The closest answer choice is (B) 0.0895.

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The support of the association rule is given by option b. 0.0895.

In association rule mining, the two most crucial metrics are support and confidence. Support is a metric for how frequently a specific itemset or association rule appears in the dataset. It is the percentage of transactions that either include the itemset or adhere to the association rule. Support therefore gauges how well-liked an itemset or rule is throughout the dataset.

The support of association is given by the formula:

support = 895 / 10,000

support = 0.0895

Hence, the support of the association rule is given by option b. 0.0895.

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OB. The set is a subspace of P₂. The set contains the zero vector of P₂, the set is closed under vector addition, and the set is closed under multiplication by scalars.

To show this, we need to verify the three conditions for a set to be a subspace:

The set contains the zero vector: The zero vector of P₂ is 0t² = 0, which is in the set since any real number multiplied by 0 is 0.

The set is closed under vector addition: Let p(t) = at² and q(t) = bt² be two polynomials in the set. Then p(t) + q(t) = (a +

Answer:

g(x) = (x/2)^2

Step-by-step explanation:

if we look at the Y values for each point they remain the same, however the X values change, which tells us that the X variable is being 'tampered' with.

to find the scale factor, we divide 4/2, and we get 2.

so g(x) = (x/2)^2

remember that when applying a scale factor to the X value the effect will be inversed, so we multiply the X value with 1/2. you can use desmos to double check.

Step-by-step explanation:

v = h(πr^2)

= 13.8 cm (3.14(8.9)^2)

= 3432.32 ~3432.3cm ^3

so the volum of the cub will be 3432.3cm ^3