The human resources department manager of a very large corporation suspects that people are more likely to call in sick on Friday, so they can take a long weekend. They took a random sample of 850 sick day reports from the past few years and identified the day of the week for each sick day report. Here are the results:

Monday : 190
Tuesday : 145
Wednesday : 170
Thursday : 146
Friday : 199

(a) The manager wants to carry out a test of significance to determine if sick day reports are not uniformly distributed across the days of the week. State the null and alternative hypotheses for this test. (3 points)
(b) Find the expected counts for each day of the week under the assumption that the null hypothesis is true. List them in the table on your written work document. (2 points)
(c) Show that the conditions for this test have been met. (3 points)
(d) Find the value of the test statistic and the P-value of the test. (3 points)
(e) Make the appropriate conclusion using a = 0.05. (3 points)
(f) Based on your answer to (e), which error is it possible that you have made, Type l or Type II? Describe that error in the context of the problem. (2 points)
(g) Which day of the week contributes most to the value the chi-square test statistic? Does this provide credibility to the human resource manager's suspicion that people are more likely to call in sick on Friday? (3 points)

Answers

Answer 1

(a) Null hypothesis: Sick day reports are uniformly distributed across the days of the week.

Alternative hypothesis: Sick day reports are not uniformly distributed across the days of the week.

(b) The expected count for each day of the week is:

Monday: 121.4

Tuesday: 121.4

Wednesday: 121.4

Thursday: 121.4

Friday: 121.4

(c) Our sample size is greater than or equal to 5 for each category.

(d) χ2 = 69.62and the P-value of the test is less than 0.001.

(e) we have evidence to suggest that people are more likely to call in sick on certain days of the week.

(f) The error that is possible to have made is a Type I error. This could happen if the significance level was set too high (i.e. a value greater than 0.05).

(g) We cannot say for sure that people are calling in sick on Friday to take a long weekend without additional evidence.

(a) The null and alternative hypotheses for the test of significance to determine if sick day reports are not uniformly distributed across the days of the week are as follows:

Null hypothesis: Sick day reports are uniformly distributed across the days of the week.

Alternative hypothesis: Sick day reports are not uniformly distributed across the days of the week.

(b) We know that the total sample size is 850.

We can use this to calculate the expected count for each day of the week under the assumption that the null hypothesis is true.

The expected count for each day of the week is:

Monday: (1/7) x 850 = 121.4

Tuesday: (1/7) x 850 = 121.4

Wednesday: (1/7) x 850 = 121.4

Thursday: (1/7) x 850 = 121.4

Friday: (1/7) x 850 = 121.4

(c) The conditions for this test have been met because: We have categorical data.

Our sample is random.

Our sample size is greater than or equal to 5 for each category. (190, 145, 170, 146, and 199 are all greater than 5).

(d) To find the chi-square test statistic and the P-value of the test, we first need to calculate the expected count, observed count, and contribution to chi-square for each category. These are shown in the table below:

Day of the week
Expected count
Observed count
Contribution to chi-square

Monday
121.4
190
16.09

Tuesday
121.4
145
7.56

Wednesday
121.4
170
2.17

Thursday
121.4
146
5.33

Friday
121.4
199
38.47

The formula for calculating the chi-square test statistic is:

χ2=∑(O−E)2/E

=16.09+7.56+2.17+5.33+38.47

=69.62

Using a chi-square distribution table with 4 degrees of freedom (5 categories - 1), we can find the P-value for this test to be less than 0.001.

Therefore, the P-value of the test is less than 0.001.

(e) Since our P-value is less than 0.05, we reject the null hypothesis and conclude that sick day reports are not uniformly distributed across the days of the week.

In other words, we have evidence to suggest that people are more likely to call in sick on certain days of the week.

(f) The error that is possible to have made is a Type I error.

This means that we have rejected the null hypothesis when it is actually true.

In the context of the problem, this means that we have concluded that sick day reports are not uniformly distributed across the days of the week when they actually are.

This could happen if the significance level was set too high (i.e. a value greater than 0.05).

(g) Friday contributes most to the value of the chi-square test statistic.

This provides some credibility to the human resource manager's suspicion that people are more likely to call in sick on Friday.

However, it is important to note that other factors may be contributing to this pattern as well (e.g. higher stress levels at the end of the week, etc.).

Therefore, we cannot say for sure that people are calling in sick on Friday to take a long weekend without additional evidence.

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Related Questions

Which of these shapes is not a parallelogram? HELP ASAP 15 BRAINLY POINTS! TYSM GOD BLESS YOU AND YOUR FAMILY!

Answers

Answer:

The answer would be D

____________________________________________________________

   Why?

Trapezoids have only one pair of parallel sides; parallelograms have two pairs of parallel sides. A trapezoid can never be a parallelogram. The correct answer is that all trapezoids are quadrilaterals.

____________________________________________________________    

   What's a  parallelogram?                                                                                      

 Its a four-sided plane rectilinear figure with opposite sides parallel.

____________________________________________________________

Please don't be afraid to point out errors :)  

____________________________________________________________

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The correct shape which is not a parallelogram is shown in Option D.

What is an expression?

Mathematical expression is defined as the collection of the numbers variables and functions by using operations like addition, subtraction, multiplication, and division.

Given that;

There are four shapes are shown.

Now, We know that;

In a parallelogram, there are two pair of parallel lines.

But In option D;

There are only one pair of parallel lines.

Hence, The correct shape which is not a parallelogram is shown in Option D.

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math because im very bad at it

Answers

plz show pic or type it our

For the differential equation s" + bs' +9s = 0, find the values of b that make the general solution overdamped, underdamped, or critically damped. (For each, give an interval or intervals for b for which the equation is as indicated. Thus if the the equation is overdamped for all b in the range -1

Answers

The general solution to the differential equation s" + b s' + 9s = 0 can be written as:

[tex]s(t) = c1*e^(-bt/2)*cos(({4b-36)/2)t} 4b-36)/2)t) + c2e^(-bt/2)*sin\sqrt{(4b-36)/2)*t)} (4b-36)/2)*t)[/tex]

where c1 and c2 are constants determined by the initial conditions.

The behavior of the solutions to this equation depends on the value of the parameter b. Specifically, there are three cases to consider:

Overdamped: If b > 6, then the roots of the characteristic equation[tex]s^2 + bs + 9 = 0[/tex] are real and distinct, i.e., [tex]b^2 - 4ac[/tex] > 0. In this case, the general solution is a linear combination of two decaying exponentials, and the system is said to be overdamped. To find the interval for b for which the equation is overdamped, we solve the inequality b > 6, which gives the interval (6, infinity).

Critically damped: If b = 6, then the roots of the characteristic equation are real and equal, i.e., [tex]b^2 - 4ac[/tex]= 0. In this case, the general solution is a linear combination of two decaying exponentials, where one of the exponentials has an additional factor of t. The system is said to be critically damped. To find the interval for b for which the equation is critically damped, we solve the equation b = 6, which gives the singleton set {6}.

Underdamped: If b < 6, then the roots of the characteristic equation are complex conjugates, i.e., [tex]b^2 - 4ac[/tex]  < 0. In this case, the general solution is a linear combination of two decaying exponentials, where the exponentials have a sinusoidal factor. The system is said to be underdamped. To find the interval for b for which the equation is underdamped, we solve the inequality b < 6, which gives the interval (-infinity, 6).

Therefore, the interval for b that makes the general solution overdamped is (6, infinity), the singleton set {6} makes the general solution critically damped, and the interval for b that makes the general solution underdamped is (-infinity, 6).

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Solve the following equation for x.​

Answers

Answer:

If you just solve normally, you will get x=2 and x=-3. But if you plug these in to check your work, you will find that they are wrong. Your answer is no solution

Step-by-step explanation:

ln(2x+3)+ln(x-2)=ln(x^2-2x)

Rule: log(a) + log(b) = log(a*b)

ln( (2x+3)(x-2) ) = ln(x^2-2x)

Rule: If log(a) = log(b) then a = b

(2x+3)(x-2) = x^2 - 2x

2x^2-x-6=x^2-2x

x^2+x-6=0

Using Quadratic Formula:

x = 2 and x = -3

But, plugging these numbers back into the original equation is false!

A certain county is 25​% African American. Suppose a researcher is looking at jury​ pools, each with 200 ​members, in this county. The null hypothesis is that the probability of an African American being selected into the jury pool is 25​%. a. How many African Americans would the researcher expect on a jury pool of 200 people if the null hypothesis is​ true? b. Suppose pool A contains 17 African American people out of 200​, and pool B contains 39 African American people out of 200. Which will have a smaller​ p-value and​ why?

Answers

Answer: a. 50 African Americans

b. Pool B will have a smaller​ p-value because that pool's number of AA people is further from the hypothesized number of AA people.

Step-by-step explanation:

There were 32 volunteers to donate blood. Unfortunately, n of the volunteers did not meet the health
requirements, so they couldn't donate. The rest of the volunteers donated 470 milliliters each.
How many milliliters of blood did the volunteers donate?
Write your answer as an expression.

Answers

32-n*470=? There’s 32 people and you subtract the n amount that couldn’t donate then multiply by 470

A random sample of nı = 19 securities in Economy A produced mean returns of X 1 = 6.6% with sı = 2.3% while another random sample of n2 = 22 securities in Economy B produced mean returns of # 2 = 5% with s2 = 7.7%. Construct a 98% confidence interval estimate for pl H2 Assume that the samples are independent and randomly selected from normal populations with unequal population variances (012 + 022). T-Distribution Table % % < (H 1 - 2) < Round to two decimal places if necessary

Answers

The 98% confidence interval for the distribution of differences is given as follows:

(-2.58%, 5.78%).

How to obtain the confidence interval?

The difference of the sample means is given as follows:

6.6 - 5 = 1.6%.

The standard error for each sample is given as follows:

[tex]s_1 = \frac{2.3}{\sqrt{19}} = 0.53[/tex] [tex]s_2 = \frac{7.7}{\sqrt{22}} = 1.64[/tex]

The standard error for the distribution of differences is then given as follows:

[tex]s = \sqrt{0.53^2 + 1.64^2}[/tex]

s = 1.72.

The critical value, using a t-distribution calculator, for a two-tailed 98% confidence interval, with 19 + 22 - 2 = 39 df, is t = 2.4286.

The lower bound of the interval is given as follows:

1.6 - 2.4286 x 1.72 = -2.58%.

The upper bound of the interval is given as follows:

1.6 + 2.4286 x 1.72 = 5.78%.

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12. from the slope of your best-fit line, what is the velocity of the pacific plate, as expressed in cm/yr? (2 significant figures required)

Answers

The velocity of the Pacific plate, expressed in centimeters per year (cm/yr), can be determined from the slope of the best-fit line in a geologic study.

In a geologic study, if data points representing the position of the Pacific plate are collected over a period of time, a best-fit line can be calculated to represent the trend of plate movement.

- The slope of this line represents the rate of change of position over time, which corresponds to the velocity of the plate. By examining the slope of the best-fit line and converting it to centimeters per year, we can determine the velocity at which the Pacific plate is moving.

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Four minutes is what percent of an hour?​

Answers

Answer

6 and 2/3 percent of an hour OR 6.666.... hour

I don’t know if you have to round or not but if it does just round

Step-by-step explanation:

Well 4 minutes of an hour is basically 4/60

4/60=1/15

1/15=x/100

solve the proportion by cross multiplying

100=15x

x=6.66666666

That is yoru percent

Solve the system of differential equations S x1 = – 5x1 + 0x2 – 16x1 + 322 X2' x1(0) = 1, X2(0) = 5 21(t) = = 22(t) - = X2

Answers

The solution to the system of differential equations is x₁(t) = e⁻⁵ˣ + 3e³ˣ and x₂(t) = 2e⁻⁵ˣ + 5e³ˣ

Let's solve the given system of differential equations: x₁' = -5x₁ + 0x₂ ...(1) x₂' = -16x₁ + 3x₂ ...(2)

To solve this system, we can rewrite it in matrix form. Let's define the vector X = [x₁, x₂] and the matrix A as:

A = [[-5, 0], [-16, 3]]

The system can then be written as X' = AX, where X' is the derivative of X with respect to time.

Now, let's find the eigenvalues and eigenvectors of matrix A. The eigenvalues are obtained by solving the characteristic equation det(A - λI) = 0, where I is the identity matrix.

A - λI = [[-5 - λ, 0], [-16, 3 - λ]]

det(A - λI) = (-5 - λ)(3 - λ) - 0(-16) = λ² + 2λ - 15 = (λ + 5)(λ - 3)

Setting the characteristic equation equal to zero, we find the eigenvalues: λ₁ = -5 λ₂ = 3

To find the corresponding eigenvectors, we substitute each eigenvalue back into the matrix A - λI and solve the system of equations (A - λI)v = 0, where v is the eigenvector.

For λ₁ = -5: A - (-5)I = [[0, 0], [-16, 8]]

Using Gaussian elimination, we can solve the system of equations to find the eigenvector corresponding to λ₁: -16v₁ + 8v₂ = 0 => -2v₁ + v₂ = 0 => v₁ = (1/2)v₂

Let v₂ = 2, then v₁ = 1. Therefore, the eigenvector corresponding to λ₁ is v₁ = [1, 2].

For λ₂ = 3: A - 3I = [[-8, 0], [-16, 0]]

Solving the system of equations, we find: -8v₁ = 0 => v₁ = 0

Thus, the eigenvector corresponding to λ₂ is v₂ = [0, 1].

Now, let's express the solution of the system in terms of the eigenvalues and eigenvectors.

X(t) = c₁e(λ₁t)v₁ + c₂e(λ₂t)v₂

Substituting the eigenvalues and eigenvectors we found earlier, we have: X(t) = c₁e⁻⁵ˣ[1, 2] + c₂e³ˣ[0, 1]

Using the initial conditions, x₁(0) = 1 and x₂(0) = 5, we can find the values of c₁ and c₂.

At t = 0: [1, 5] = c₁[1, 2] + c₂[0, 1] 1 = c₁ 5 = 2c₁ + c₂

Solving these equations, we find: c₁ = 1 c₂ = 3

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Complete Question:

Solve the system of differential equations

x₁' = – 5x₁ + 0x₂

x₂' = – 16x₁ + 3x₂

x₁(0) = 1, x₂(0) = 5

In sarah classroom, There are 6 girls or every 2 boys. What is the ratio of boys to the total number of student

Answers

For every 3 girls there is 1 boy, or for every 1 boy there is 3 girls

Answer:

3:1 (Girls:Boys)

6 divided by 2

HELP PLEASE‼️
There are 148 legs in a farm yard full of goats and chickens. There are 62 total animals. How many of each are there.

Answers

It is 12 goats and 50 chickens to make those animals and that exact number of legs

Andrea constructed a triangle. Angle 1 and 3 are the same size and angle 2 has a measurement of 70 degrees. What is the measurement of angle 1 and 3

Answers

Answer:

Step-by-step explanation:

By triangle sum theorem,

Sum of all angles of a triangle is 180°.

m∠1 + m∠2 + m∠3 = 180°

(m∠1 + m∠3) + m∠2 = 180°

2(m∠1) + 70° = 180° {Given → m∠1 = m∠3]

2(m∠1) = 110°

m∠1 = 55°

Therefore, m∠1 = m∠3 = 55°

HOW MANY TABLESPOONS ARE IN 400 MILLIMETERS? 1 TSP = 5mL

Answers

Answer:

80 tsp.

Step-by-step explanation:

400 divided by 5 is 80, so 80 tsp's.

Answer:

80 tsp.

Step-by-step explanation:

400 mL = 80 tsp

A square has a perimeter of 36 inches and a smaller square has a side length of 4 inches. What is the ratio of the areas of the larger square to the smaller square?

Answers

Answer:

3:2

Step-by-step explanation:

a square has the same side lengths so just √36 = 6 to find the sides of the squares then compare the two sides in ratio form 6:4 then reduce

i believe the asnwer will be. : 3:2

HURRY PLEASEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEE

Answers

Answer:

48 is the answer

Step-by-step explanation:

9*4 +. 6*2

36 + 12

48

48.............................

could any body help me with this

Answers

Answer:

1) 1.2 minutes

2) 8.3 laps

3) 25.2 minutes

Gina and Rhonda work for different real estate agencies. Gina earns a monthly salary of $5,000 plus a 6% commission on her sales. Rhonda earns a monthly salary of $6,500 plus a 4% commission on her sales. How much must each sell to earn the same amount in a month?

Answers

Answer: Gina and Rhonda work for different real estate agencies. Gina earns a monthly salary of $5,000 plus a 6% commission on her sales. Rhonda earns a monthly salary of $6,500 plus a 4% commission on her sales. How much must each sell to earn the same amount in a month?

Step-by-step explanation:

$5,000 + 6% + $6,500 + 4% = 11500.1 or 11500

add the following fraction give me the answer in lowest terms and mixed numbers if necessary. 10/12 +1/2 =

Answers

Answer:

[tex]1\frac{1}{3}[/tex]

Step-by-step explanation:

Let λ be an eigenvalue of an invertible matrix a. show that λ^−1 is an eigenvalue of A^−1. [hint: suppose a nonzero x satisfies Ax=λx.]

Answers

Let λ be an eigen value of an invertible matrix. Then, [tex]\lambda^{-1}[/tex] is surely an eigenvalue of [tex]A^{-1}[/tex].

What is an invertible matrix?

For a matrix to be invertible, it must have a unique matrix that, when multiplied with the original matrix, gives the identity matrix.

[tex]A * B = B * A = I[/tex]

Suppose A is an invertible matrix and λ is an eigenvalue of A with a corresponding nonzero eigenvector x, i.e., Ax = λx.

To show that [tex]\lambda^{-1}[/tex] is an eigenvalue of [tex]A^{-1}[/tex], we need to find a nonzero vector y such that [tex]A^{-1}y[/tex] = [tex]\lambda^{-1}y[/tex].

Let's start by multiplying both sides of the equation Ax = λx by [tex]A^{-1}[/tex]:

[tex]A^{-1}(Ax) = A^{-1}(\lambda x)[/tex]

(x is nonzero, so we can divide by x)

[tex]A^{-1}(Ax/x) = A^{-1}(\lambda x/x)\\A^{-1}(A(x/x)) = A^{-1}(\lambda)[/tex]    

Since [tex]A^{(-1)}A = I[/tex] (identity matrix), and x/x = 1, we have:

[tex]A^{(-1}(I) = A^{(-1)}[/tex] λ

[tex]A^{(-1)}[/tex] = λ[tex]A^{(-1)}[/tex]

Now, let y = A^(-1)x. We can rewrite the equation above as:

[tex]A^{(-1)}x[/tex] = λ[tex]A^{(-1)}y[/tex]

([tex]A^{(-1)}x[/tex]/λ) = [tex]A^{(-1)}y[/tex]/λ

(x is nonzero, so we can divide by x)

([tex]A^{(-1)}x/x[/tex])/λ = [tex](A^{(-1)}y/y[/tex])/λ

([tex]A^{(-1)}(x/x)[/tex])/λ = ([tex]A^{(-1)}y/y[/tex])/λ

([tex]A^{(-1)}(1)[/tex])/λ = ([tex]A^{(-1)}y/y[/tex])/λ

([tex]A^{(-1)}[/tex])/λ = ([tex]A^{(-1)}y[/tex])/λ

Since [tex]A^{(-1)}[/tex] is a matrix and λ is a scalar, we can rearrange the equation as follows:

([tex]A^{(-1)}[/tex])/λ = [tex]A^{(-1)}[/tex]y/λ

(1/λ)[tex]A^{(-1)}[/tex] =[tex]A^{(-1)}[/tex]y/λ

This shows that 1/λ is an eigenvalue of [tex]A^{(-1)}[/tex] with the corresponding eigenvector y. Therefore, we have shown that if λ is an eigenvalue of A, then [tex]\lambda^{(-1)}[/tex] is an eigenvalue of [tex]A^{(-1)}[/tex]

 

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Which one would result an integer

Answers

Answer:

c is the only one that would result in an integer

Step-by-step explanation:

i hope this helps :)

Option c ∛ 27 would result in an integer.

what are integers?

An integer is the number zero, a positive natural number or a negative integer with a minus sign. The negative numbers are the additive inverses of the corresponding positive numbers.

Given here, ∛27= 3 while the other options ∛60 is not an integer because 60 is not  cubic number similarly for 9 , 18 are not cubic numbers and thus their subsequent cubic roots will not yield an integer.

Hence, Option c ∛ 27 would result in an integer.

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How much Interest(in dollars) is earned by Investing $2200 at a simple interest rate of 8% for 12 years? Write the correct answer.

Answers

A = $4,312.00

I = A - P = $2,112.00

hey!

Equation:

A = P(1 + rt)

Calculation:

First, converting R percent to r a decimal

r = R/100 = 8%/100 = 0.08 per year.

Solving our equation:

A = 2200(1 + (0.08 × 12)) = 4312

A = $4,312.00

The total amount accrued, principal plus interest, from simple interest on a principal of $2,200.00 at a rate of 8% per year for 12 years is $4,312.00.

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

have a good day! hope i helped in some way

A UMass student is starting their junior year and has accumulated 60 credits so far. Their current cumulative average is a C, or a Grade Point Average (GPA) of 2.0. Their employer has a scholarship program for students who have GPAs of 2.3 or higher. This student wants to get that scholarship to help pay for their senior year. They plan on taking 15 credits each for the fall and spring semesters of their junior year.

a. Can they raise their cumulative average to 2.3 after completing 15 fall semester credits? What semester GPA would they need?

b. What average GPA would they need for their two junior year semesters combined (30 credits) to achieve their goal of a 2.3 cumulative GPA and 90 credits?

Answers

According to the information, we can infer that no, they cannot raise their cumulative average to 2.3 after completing 15 fall semester credits. On the other hand, they would need an average GPA of 3.25 for their two junior year semesters combined (30 credits) to achieve their goal of a 2.3 cumulative GPA and 90 credits.

How to calculate the new cumilative GPA?

In order to calculate the new cumulative GPA, we need to consider both the current cumulative GPA and the GPA earned in the fall semester. Since the student's current cumulative GPA is 2.0 and they have already accumulated 60 credits, their total grade points earned so far would be 2.0 multiplied by 60, which equals 120 grade points.

To raise the cumulative GPA to 2.3, the student would need a total of 2.3 multiplied by (60 + 15) = 2.3 multiplied by 75 = 172.5 grade points by the end of the fall semester.

Since the student has already accumulated 120 grade points, they would need to earn an additional 52.5 grade points in the fall semester. To calculate the required semester GPA, we divide 52.5 by 15 credits, which gives us a required semester GPA of 3.5.

So, the student would need a semester GPA of 3.5 in order to raise their cumulative average to 2.3 after completing 15 fall semester credits.

What average gpa would they need for their two junior year semesters combined to achieve their goal?

They would need an average GPA of 3.25 for their two junior year semesters combined (30 credits) to achieve their goal of a 2.3 cumulative GPA and 90 credits.

Explanation: To calculate the average GPA for the two junior year semesters, we need to consider the total grade points earned and the total number of credits taken.

Currently, the student has accumulated 60 credits and 120 grade points. In order to achieve a cumulative GPA of 2.3 after completing 90 credits, they would need a total of 2.3 multiplied by 90 = 207 grade points.

To calculate the required grade points for the two junior year semesters, we subtract the current grade points (120) from the desired total grade points (207), which gives us 207 - 120 = 87 grade points needed for the junior year.

Since the student plans to take 30 credits during their junior year, they would need to earn 87 grade points in those 30 credits. Dividing 87 by 30 gives us an average GPA of approximately 2.9 for the two junior year semesters.

According to the above, the student would need an average GPA of 3.25 (rounded up) for their two junior year semesters combined to achieve their goal of a 2.3 cumulative GPA and 90 credits.

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25x+20y=200 in slope intercept form.​

Answers

Answer:

5x+4y-40=0

Step-by-step explanation:

a lamina occupies the part of the disk 2 2≤16 in the first quadrant and the density at each point is given by the function (,)=3(2 2).

Answers

A lamina occupies the region of a disk in the first quadrant where 2 ≤ r ≤ 16, and the density at each point is given by the function ρ(r, θ) = 3[tex](r^2).[/tex] Further analysis is required to determine the mass and other properties of the lamina.

The given information describes a lamina occupying a region in the first quadrant of a disk. The radial distance from the origin is limited to the range 2 ≤ r ≤ 16. The density of the lamina at any point within this region is determined by the function ρ(r, θ) = 3[tex](r^2)[/tex], where r represents the radial distance and θ represents the angle in the polar coordinate system.

To fully analyze the lamina, additional calculations are necessary. One important calculation is determining the mass of the lamina, which involves integrating the density function over the given region. By integrating the function ρ(r, θ) = 3[tex](r^2)[/tex] over the appropriate range of r and θ, we can find the total mass of the lamina. Additionally, other properties such as the center of mass or moment of inertia of the lamina could be determined by using appropriate formulas and integration techniques.

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x(x-4)=12 solve for x​

Answers

Answer:

x=6 and x=-2

Step-by-step explanation:

so

x(x-4)=12

first distribute

then move the terms

and the u get

x=6 and x=-2

hope this helped

Answer:

x=6, x=-2

Step-by-step explanation:

x(x-4)=12

distributive property, x^2-4x=12

x^2-4x-12=0

(x-6)(x+2)

therefore, x=6, x=-2

HELP ME ASAP PLEASE!!!!! LOOK AT SCREENSHOT (10 PTS)

Answers

Answer: i would say A and D but i'm not sure of the others

Function 1 is represented by the equation y = -4/3x-2, and function 2 is represented by the
graph below.
FUNCTION 2
For which of the functions are all the output values less than -1?
A. Both functions
B. Only function 1
C. Only function 2
D. Neither functions

Answers

I think is D,,,,,,,,,,,,,,,,,

Which value of x satisfies the equation below? 1/2 (3x + 17) = 1/6 (8x-10)

Choice answers:
A. -61
B -55
C. -41
D-35

Answers

I think is C,,,,,,,,,,,,,

Help please I need this today

Answers

I’m not the best at math so I won’t even try. But have you used Photomath ?

Answer:

a = 15

t = 5

Step-by-step explanation:

[tex] \frac{12}{a} = \frac{16}{20} \\ \\ 16a = 12 \times 20 \\ \\16 a = 240 \\ \\ a = \frac{240}{16} \\ \\ a = 15 \\ \\ \\ \frac{2}{8} = \frac{t}{20} \\ \\ 8t = 40 \\ \\ t = \frac{40}{8} \\ \\ t = 5[/tex]

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