NEED HELP WHAT ARE THSES TWOO!!

Answer:

a) 12:45 am

b) 7:30 pm

c) 20:15

d) 0:00

Step-by-step explanation:

a) We know that the 24-hour clock has no "am" or "pm" because in a day, there are 24 hours, so "pm" would simply be more than 12 hours.

The 12th hour marks noon, which is "12:00 pm" in 12-hour times. Anything after that would start from 1 and would be marked with a pm.

So 12:45 in 12-hour format would be 12:45 pm because it's passed the noon-mark, which is the 12th hour. Anything after noon would be marked with a "pm."

b) Same thing here: 19:30 has also passed the noon mark, the 12th hour. It would be marked with a "pm."

But there is no "19 'o clock" in 12-hour format (hence the 12-hour 12 hours). So to find that, we know that it has already passed noon. We can subtract to find how many hours it has passed noon:

19 - 12 = 7

So it's the 7th hour.

So it would be 7:30 pm.

c) Because there is no "am" or "pm" in the 24-hour clock, we have to see how many hours past noon it has been.

8:15 pm means it has passed noon by 8 hours and 15 minutes. So we add this to the noon mark (first 12 hours of the day).

12 + 8 = 20

This is our hours. We can attach it to the minutes: 20:15.

d) Midnight in 12-hour terms would be 12:00 am. It would be officially the next day, and it's a reset button.

If it were Saturday today, and it's 11:59 pm, it's still Saturday. But once that clock turns 12:00 pm, it's Sunday.

This means that no time has passed during Sunday yet—it just reset.

So it would be 0:00 because no time has passed officially on Sunday yet.

Answer:

A) $50

Step-by-step explanation:

Answer:

+$50

Step-by-step explanation:

Day #0 = $30

Day #10 = $80

80 - 30 = 50

:P

Answer:

$13.04

Step-by-step explanation:

First, multiply 16.89 by 1.2, 0.6, and 1.0725. You should get a weird number on your calculator saying 13.042458, but just round 2 to the 4 ( 4 stays the same) and remove all the other numbers to get $13.04

The function value for f(x) depends on the value of x. The function value of f(x) can be determined as follows:

- For x < -1, f(x) = -2x - 2.

- For x ≥ 1, [tex]f(x) = x^2 + 2x - 1[/tex].

The function value for f(x) depends on the value of x. If x is less than -1, then the function f(x) can be calculated as -2x - 2. On the other hand, if x is greater than or equal to 1, then f(x) can be determined as [tex]x^2 + 2x - 1[/tex].

To summarize, the function f(x) is defined differently based on the value of x. For x values less than -1, f(x) equals -2x - 2. For x values greater than or equal to 1, f(x) is given by  [tex]x^2 + 2x - 1[/tex]

In the first paragraph,  provided a brief summary of the function value based on the given conditions. In the second paragraph, explained how the function f(x) is defined for different ranges of x.

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Answer:

C would be your answer!

Step-by-step explanation:

Answer:

636372

Step-by-step explanation:

the answer is 636372

Answer:

Step-by-step explanation:

There is really only one solution which is the third choice. When you are dealing with the equation in the form of y = mx + b, the b stands for the y-intercept. So, your y-intercept equals -1. When you are finding the x-intercept you can just substitute y for 0(the definition of x-intercept is where the graph crosses the x-axis, meaning y needs to be equal to 0) and you get that x equals 1/5.

The correlation coefficient between X and Y for the given moments is equal to (b + c) / √(b²(1 + 2c) + 2bc²).

Y = a + bX+cX²

To find the correlation coefficient between two random variables X and Y,

Calculate their covariance and standard deviations.

Find the covariance between X and Y.

The covariance between X and Y is ,

cov(X, Y) = E[(X - E[X])(Y - E[Y])]

To calculate this, find the expected values E[X] and E[Y].

Since we are given the first four moments of X,

Use them to find the mean (E[X]) and the variance (Var[X]) of X,

E[X]

= μ

= 1

Var[X]

= E[X²] - (E[X])²

= 2 - 1²

= 2 - 1

= 1

Now let us find E[Y],

E[Y] = E[a + bX + cX²]

= a + bE[X] + cE[X²]

To calculate E[X²], use the second moment of X,

E[X²] = 2

Substituting these values, we have,

E[Y] = a + b(1) + c(2)

Now calculate the covariance,

cov(X, Y)

= E[(X - E[X])(Y - E[Y])]

= E[X·Y - X·E[Y] - E[X]·Y + E[X]·E[Y]]

= E[X·Y] - E[X]·E[Y] - E[X]·E[Y] + E[X]·E[Y]

= E[X·Y] - E[X]·E[Y]

The second moment of XY,

E[XY]

= E[(a + bX + cX²)X]

= E[aX + bX² + cX³]

= aE[X] + bE[X²] + cE[X³]

To calculate E[X³], use the third moment of X,

E[X³] = 3

Substituting these values, we have,

E[XY]

= aE[X] + bE[X²] + cE[X³]

= a(1) + b(2) + c(3)

= a + 2b + 3c

Finally, substitute the expressions for E[XY] and E[X]·E[Y] back into the covariance formula to obtain,

cov(X, Y)

= E[XY] - E[X]·E[Y]

= (a + 2b + 3c) - (1)(a + b(1) + c(2))

= a + 2b + 3c - a - b - 2c

= b + c

Next, calculate the standard deviations of X and Y.

The standard deviation of X is the square root of the variance,

σ(X)

= √Var[X]

= √1

= 1

The standard deviation of Y can be calculated as follows,

Var[Y]

= Var[a + bX + cX²]

= Var[bX + cX²]

= b²Var[X] + c²Var[X²] + 2bcCov[X, X²]

Var[X] and Var[X²] from the given moments,

Var[X] = 1

Var[X²]

= E[X⁴] - (E[X²])²

= 4 - 2²

= 4 - 4

= 0

Substituting these values, we have,

Var[Y]

= b²Var[X] + c²Var[X²] + 2bcCov[X, X²]

= b²(1) + c²(0) + 2bcCov[X, X²]

= b² + 2bcCov[X, X²]

Since Cov[X, X²] = b + c, substitute this back into the equation,

Var[Y]

= b² + 2bc(b + c)

= b² + 2b²c + 2bc²

= b²(1 + 2c) + 2bc²

The standard deviation of Y is the square root of the variance,

σ(Y)

= √Var[Y]

= √(b²(1 + 2c) + 2bc²)

Finally, calculate the correlation coefficient,

p(X, Y)

= cov(X, Y) / (σ(X) · σ(Y))

= (b + c) / (1 · √(b²(1 + 2c) + 2bc²))

= (b + c) / √(b²(1 + 2c) + 2bc²)

Therefore, the correlation coefficient between X and Y is given by (b + c) / √(b²(1 + 2c) + 2bc²).

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Answer: 336

Step-by-step explanation:

8 * 3 * 14

Answer: X=8 Y=138

Step-by-step explanation:

Answer: x=2 and y=12

Step-by-step explanation:

Answer:

375

Step-by-step explanation:

500-125(25% of 500)=375

Answer:

Mean = 62

Step-by-step explanation:

X = mean ± sd

82 = mean + 2(s.d) - - (1)

32 = mean - 3sd ___(2)

82 = mean + 2sd

82 - 32= 2sd + 3sd

50 = 5sd

sd = 50/5

sd = 10

From (2):

32 = mean - 3sd

32 = mean - 3(10)

32 = mean - 30

32 + 30 = mean

62 = mean

1.  the upper weight limit the kayak needs to support for the company to meet their claim is 270 pounds (rounded off to nearest pound).

2. the probability that a randomly selected rider falls into the weight range of 135-210 pounds is 0.6245 or approximately 62.45%.

3. It is important for Rogue River Kayaks to consistently look to the National Transportation and Safety Board (NTSB) to update the distribution of weights in the United States because the company needs to ensure that their kayaks can accommodate the maximum number of people possible.

As the distribution of weights in the population changes, the company needs to adjust the design of their kayaks to meet the needs of their customers.

By staying up-to-date with the latest data provided by NTSB, Rogue River Kayaks can ensure that their products remain competitive and continue to meet the needs of their customers.

1. We know that the weights of men in the United States are normally distributed with a mean (μ) of 188.6 pounds and a standard deviation (σ) of 38.9 pounds.

Using Excel, we can use the formula NORM.

INV to find the upper weight limit for the kayak to support if Rogue River Kayaks claims that they can fit 99% of men in their Boulder Buster Kayak.

The formula for NORM.

INV is =NORM.INV(probability,mean,standard deviation)

Where probability = 0.99, mean = 188.6, standard deviation = 38.9.

Thus, =NORM.INV(0.99,188.6,38.9)
= 269.60

Therefore, the upper weight limit the kayak needs to support for the company to meet their claim is 270 pounds (rounded off to the nearest pound).

2. To find the probability that a randomly selected rider falls into the ideal weight range for kayakers in the Boulder Buster, we need to find the z-scores for the given weight range and then use the standard normal distribution table.

The z-score formula is:

z = (x - μ) / σ

where x is the weight, μ is the mean and σ is the standard deviation.

For the lower weight limit of 135 pounds, the z-score is z = (135 - 188.6) / 38.9 = -1.382

For the upper weight limit of 210 pounds, the z-score is z = (210 - 188.6) / 38.9 = 0.551

Using the standard normal distribution table, we can find the probability that a z-score falls between -1.382 and 0.551.

The probability is

P(z < 0.551) - P(z < -1.382)

= 0.7088 - 0.0843

= 0.6245

Therefore, the probability that a randomly selected rider falls into the weight range of 135-210 pounds is 0.6245 or approximately 62.45%.

3. It is important for Rogue River Kayaks to consistently look to the National Transportation and Safety Board (NTSB) to update the distribution of weights in the United States because the company needs to ensure that their kayaks can accommodate the maximum number of people possible.

As the distribution of weights in the population changes, the company needs to adjust the design of their kayaks to meet the needs of their customers.

By staying up-to-date with the latest data provided by NTSB, Rogue River Kayaks can ensure that their products remain competitive and continue to meet the needs of their customers.

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The expression to evaluate is arccos([tex]\sqrt(3)[/tex]/2) - arcsin(1/2). The exact angle in radians in the interval [0, π] for this expression is π/6.

To evaluate the given expression, we start by calculating the values inside the trigonometric functions. The square root of 3 divided by 2 is equal to 0.866, and 1 divided by 2 is equal to 0.5. The arccos function gives us the angle whose cosine is equal to the input. In this case, the cosine of the angle we are looking for is[tex]\sqrt(3)[/tex]/2. Using the unit circle, we find that this angle is π/6 radians. Next, we calculate the arcsin of 1/2, which gives us the angle whose sine is equal to the input. This angle is π/6 radians as well. Finally, we subtract the two angles to get our result: π/6 - π/6 = 0. Therefore, the exact angle in radians in the interval [0, π] for the given expression is π/6.

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The statement "W is a subspace of M2x2" is true because W satisfies the three conditions for being a subspace.

To determine whether W is a subspace of M2x2, we need to verify three conditions:

W is non-empty: Since W is defined as the set of all 2x2 matrices with a fixed entry of 5, it contains at least one matrix (such as [[5, 5], [5, 5]]).

W is closed under addition: For any two matrices A and B in W, their sum A + B will also have the fixed entry of 5 in the corresponding position. Therefore, the sum of any two matrices in W will still be in W.

W is closed under scalar multiplication: For any matrix A in W and any scalar c, the scalar multiple cA will also have the fixed entry of 5 in the corresponding position. Hence, the scalar multiple of any matrix in W will still be in W.

Since W satisfies all three conditions, it is indeed a subspace of M2x2.

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Answer:

c

Step-by-step explanation:

Answer:

105

Step-by-step explanation:

(-20+5)(58-65)

(-15)(-7)

105

a. In this case, since f(t) = 5, L{5} = ∫[0 to ∞] 5 * e^(-st) dt. b. the antiderivative simplifies to ∫(5 * e^(-st)) dt = (5/s) * e^(-st). c. the Laplace transform simplifies to (5/s) * (0 - 1).

A) To set up an integral for finding the Laplace transform of f(t) = 5, we can use the definition of the Laplace transform. The Laplace transform of a function f(t) is given by the integral:

L{f(t)} = ∫[0 to ∞] f(t) * e^(-st) dt

where s is the complex frequency parameter. In this case, since f(t) = 5, we have:

L{5} = ∫[0 to ∞] 5 * e^(-st) dt

B) To find the antiderivative corresponding to the previous part, we can integrate the function 5 * e^(-st) with respect to t. The antiderivative, or indefinite integral, of 5 * e^(-st) dt is:

∫(5 * e^(-st)) dt = (5/s) * e^(-st) + C

where C is the constant of integration. Since we are given that the constant term is 0, the antiderivative simplifies to:

∫(5 * e^(-st)) dt = (5/s) * e^(-st)

C) To evaluate the Laplace transform of f(t) = 5, we need to compute the integral from 0 to ∞. Plugging in the antiderivative from part B, we have:

L{f(t)} = ∫[0 to ∞] 5 * e^(-st) dt = lim[T→∞] [(5/s) * e^(-sT) - (5/s) * e^(-s(0))]

As T approaches infinity, the term e^(-sT) goes to 0, since the exponential function decays as the exponent becomes more negative. Therefore, the Laplace transform simplifies to:

L{5} = lim[T→∞] [(5/s) * e^(-sT) - (5/s) * e^(0)]

= (5/s) * (0 - 1)

Simplifying further, we find:

L{5} = -5/s

D) The Laplace transform L{f(t)} = -5/s exists for values of s where the integral converges. The Laplace transform is defined for a certain range of complex numbers, which forms the domain of the Laplace transform. In this case, the Laplace transform of f(t) = 5 exists for all complex numbers s except for s = 0. Therefore, the domain of f(s) is the set of all complex numbers except for s = 0.

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Answer:

r = 6

Step-by-step explanation:

According to the question,

4(r + 4) = 10r - 20

4r + 16 = 10r - 20

16 + 20 = 10r - 4r

6r = 36

r = 36 / 6

r = 6

The correct answer is option (b): [tex]e^16 - 68/3[/tex]. The approximate value of this expression is [tex]e^16 - 68/3[/tex].

To reverse the order of integration, we need to change the order of integration and rewrite the limits of integration accordingly.

The given integral is:

∫₀¹₄ ᵧ ∫⁴ x⁴e^(x²ʸ) dx dy

To reverse the order of integration, we integrate with respect to y first. The limits of integration for y are 0 to 14ᵧ. The limits of integration for x will depend on the value of y.

∫₀¹₄ ᵧ ∫⁴ x⁴e^(x²ʸ) dx dy

Let's integrate with respect to x first:

∫⁴ x⁴e^(x²ʸ) dx = [1/5 x⁵e^(x²ʸ)]⁴₀

Now we can rewrite the integral with reversed order of integration:

∫₀¹₄ dy ∫⁴₀ x⁴e^(x²ʸ) dx

Plugging in the limits of integration for x:

∫₀¹₄ dy [1/5 x⁵e^(x²ʸ)]⁴₀

Now we can evaluate the integral:

∫₀¹₄ dy [1/5 (⁴)⁵e^(⁴²ʸ) - 1/5 (⁰)⁵e^(⁰²ʸ)]

Simplifying:

∫₀¹₄ dy [1/5 (1024e^(16ʸ) - 1)]

Now integrate with respect to y:

[1/5 (1024e^(16ʸ) - 1)]¹₄

Plugging in the limits of integration for y:

[1/5 (1024e^(1614) - 1)] - [1/5 (1024e^(160) - 1)]

Simplifying:

[1/5 (1024e^(224) - 1)] - [1/5 (1024e^(0) - 1)]

[1/5 (1024e^(224) - 1)] - [1/5 (1024 - 1)]

[1/5 (1024e^(224) - 1)] - [1/5 (1023)]

[1/5 (1024e^(224) - 1)] - [204.6]

To evaluate the expression, we need the actual numerical value for e^(224). Using a calculator, we find that e^(224) is an extremely large number. Therefore, we can approximate it as e^(224) ≈ 2.4858 x 10^97.

Plugging in the value:

[1/5 (1024 x (2.4858 x 10^97) - 1)] - [204.6]

Simplifying the expression:

[2.4858 x 10^97 - 1] / 5 - 204.6

The approximate value of this expression is:

e^16 - 68/3

Therefore, the correct answer is option (b): e^16 - 68/3.

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Answer:

201.06in²

plz mark me as brainliest

The number of options for a, b, and c that fulfill the system and produce the stated solution is unlimited.

To determine the coefficients a, b, and c such that the system of equations satisfies the given solution x = 1, y = -1, and z = 2, we can substitute these values into the equations and solve for a, b, and c.

Substituting x = 1, y = -1, and z = 2 into the first equation:

a(1) + b(-1) - 3(2) = -1

a - b - 6 = -1

Substituting x = 1, y = -1, and z = 2 into the second equation:

a(1) + 3(-1) - c(2) - 3 = 0

a - 3 - 2c - 3 = 0

a - 2c = 6

Now we have a system of two equations with two unknowns:

a - b - 6 = -1

a - 2c = 6

We can solve this system using standard techniques such as substitution or elimination.

From the first equation, we have a = b - 5. Substituting this into the second equation, we get:

(b - 5) - 2c = 6

b - 2c = 11

So we have the system:

a = b - 5

b - 2c = 11

The values of a, b, and c can be chosen arbitrarily as long as they satisfy these equations. For example, we can choose a = 0, b = 6, and c = -2, which satisfies the system of equations. However, there are infinitely many possible choices for a, b, and c that would yield the given solution.

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The value of the chi-square statistic for the given sample is 1.846 (rounded to three decimal places).

Chi-square Test Chi-square test is a type of statistical test that is used to find a relationship between two categorical variables.The given table shows the age distribution and location of a random sample of 166 buffalo in a national park.

Age Lamar District Nez Perce District Firehole District Row TotalCalf 14 17 10 41Yearling 13 11 9 33Adult 36 30 26 92Column Total 63 58 45 166Calculation: The formula for the Chi-Square goodness-of-fit test statistic is:χ2 = Σ [ (O − E)2 / E ]Where,χ2 = chi-square statisticO = observed valueE = expected valueExpected frequency formula:E = (row total * column total) / n

Where,n = grand totalExpected Frequency Calf Yearling Adult Lamar District 41*63/166 = 15.590 33*63/166 = 12.530 92*63/166 = 35.879 Nez Perce District 41*58/166 = 14.339 33*58/166 = 10.979 92*58/166 = 32.682 Firehole District 41*45/166 = 11.071 33*45/166 = 9.491 92*45/166 = 25.437

Chi-square test statistic can be calculated by using the below formula:χ2 = Σ [ (O − E)2 / E ]

Chi-square test statistic = (14 - 15.590)^2/15.590 + (17 - 14.339)^2/14.339 + (10 - 11.071)^2/11.071 + (13 - 12.530)^2/12.530 + (11 - 10.979)^2/10.979 + (9 - 9.491)^2/9.491 + (36 - 35.879)^2/35.879 + (30 - 32.682)^2/32.682 + (26 - 25.437)^2/25.437χ2 = 0.390 + 0.557 + 0.082 + 0.043 + 0.079 + 0.022 + 0.009 + 0.534 + 0.130χ2 = 1.846 (rounded to three decimal places)

Thus, the value of the chi-square statistic for the given sample is 1.846 (rounded to three decimal places).

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The value of the chi-square statistic for the sample is 1.396 (rounded to 3 decimal places).

To find the chi-square statistic for the given sample, we need to perform the following steps:

Step 1: Calculate the expected frequency for each cell.

Step 2: Calculate the chi-square statistic using the formula.

The expected frequency for each cell is calculated by multiplying the row total and column total for that cell and dividing by the grand total.

Expected frequency for the cell (1,1) = (41*63)/166

= 15.542.

Expected frequency for the cell (1,2) = (41*58)/166

= 14.458.

Expected frequency for the cell (1,3) = (41*45)/166

= 11.000.

Expected frequency for the cell (2,1) = (33*63)/166

= 12.542.

Expected frequency for the cell (2,2) = (33*58)/166

= 11.458.

Expected frequency for the cell (2,3) = (33*45)/166

= 8.000.

Expected frequency for the cell (3,1) = (92*63)/166

= 35.000.

Expected frequency for the cell (3,2) = (92*58)/166

= 31.542.

Expected frequency for the cell (3,3) = (92*45)/166

= 25.458.

The chi-square statistic is calculated using the formula:

[tex]X^2 = \sum(O - E)^2[/tex] / Ewhere O is the observed frequency and E is the expected frequency.

The calculation is shown in the table below:

Age   Lamar District Nez   Perce District Firehole   District Row Total
Calf      14 17 10 41
Yearling 13 11 9 33
Adult 36 30 26 92
Column Total 63 58 45 166
Expected frequency 15.542 14.458 11.000 12.542 11.458 8.000 35.000 31.542 25.458
[tex](O - E)^2 / E[/tex] 0.022 0.160 0.072 0.154 0.113 0.305 0.067 0.102 0.401
[tex]X^2 = \sum(O - E)^2[/tex] / E = 1.396 (rounded to 3 decimal places).

Therefore, the value of the chi-square statistic for the sample is 1.396 (rounded to 3 decimal places).

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To answer the questions, we need the value of P% (individual attached data 1) representing the percentage of defective parts produced by the machine.

Assuming we have the value of P%, we can use the binomial distribution formula to find the probabilities. The formula is given by:

[tex]P(x) = C(n, x) * p^x * (1 - p)^{(n - x)}[/tex]

Where:

P(x) is the probability of x successes (defective parts),

C(n, x) is the number of combinations of n items taken x at a time,

p is the probability of success for each trial (P% converted to a decimal),

n is the total number of trials (50 parts in this case).

Using this formula, we can calculate the probabilities for finding 0, 1, 2, 3, and 4 defective parts in a sample of 50 parts.

To visualize the probabilities, we can create a graphical illustration using appropriate computer software, such as a bar chart or a probability distribution plot, showing the probabilities for each number of defective parts.

Additionally, we can find the probability that less than three components will be defective by summing the probabilities of finding 0, 1, and 2 defective parts. Similarly, we can find the probability that no more than three components will be defective by summing the probabilities of finding 0, 1, 2, and 3 defective parts.

Once we have the value of P% (individual attached data 1), we can perform the calculations and provide the graphical illustration to further illustrate the probabilities.

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Answer:336cm cube

Step-by-step explanation:

12x4x7 i think im  justlearning this to

Answer:

Well 3^17-3^15+3^13 equals 116,385,579

Now divide that by 73

So 116,385,579 ÷ 73

That equals 1,594,323

Hope this helps

Answer: 3^13*73

Step-by-step explanation:

3^17-3^15+3^13 So you factor out 3^13

=3^13(3^4-3^2+1)

3^4-3^2+1=73

3^13*73

Answer:

The length of [tex]\overline{JO}[/tex] is 48.

Step-by-step explanation:

A square is a quadrilateral whose four sides have the same length and four internal angles have the same measure. The sum of measures of internal angles in quadrilaterals equals 360°. Let [tex]m\,\angle BOJ = 4\cdot x -6[/tex] and [tex]BO = 2\cdot x - 8[/tex], the value of [tex]x[/tex] is:

[tex]4\cdot (4\cdot x - 6) = 360^{\circ}[/tex]

[tex]16\cdot x -24 = 360^{\circ}[/tex]

[tex]16\cdot x = 384^{\circ}[/tex]

[tex]x = 24[/tex]

And the length of [tex]JO[/tex] is:

[tex]JO = BO = 2\cdot x - 8[/tex]

[tex]JO = 40[/tex]

The length of [tex]\overline{JO}[/tex] is 48.

Given function is: f(x)= 9xTo find the values of the given function at the indicated values: Round off the answer to 3 decimal places.1. f(1/2).

f(1/2):

Plug x = 1/2 into the function:

f(1/2) = 9(1/2)

Simplifying, we find that f(1/2) = 4.5.

Similarly, for the remaining parts,

Substitute x = 1/2 in the given function. f(1/2) = 9 (1/2) = 4.5002. f(√6).

Substitute x = √6 in the given function. f(√6) = 9 √6 = 27.7123. f(-2). Substitute x = -2 in the given function. f(-2) = 9 (-2) = -18.0004. f(0.4).

Substitute x = 0.4 in the given function. f(0.4) = 9 (0.4) = 3.600. The required values of the given function are: f(1/2) = 4.500f(√6) = 27.712f(-2) = -18.000f(0.4) = 3.600.

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