The following ODE system have complex eigenvalues. Find the general real-valued solution and sketch the phase plane diagram. ' x' = -2)* = 3 4 X

Answers

Answer 1

The general real-valued solution is x(t) = c₁e^(-2t)cos(3t) + c₂e^(-2t)sin(3t), y(t) = c₁e^(-2t)sin(3t) - c₂e^(-2t)cos(3t).

The general real-valued solution of the given ODE system is x(t) = c₁e^(-2t)cos(3t) + c₂e^(-2t)sin(3t), y(t) = c₁e^(-2t)sin(3t) - c₂e^(-2t)cos(3t). To sketch the phase plane diagram, we plot the trajectories of the system by considering different initial conditions.

Each trajectory corresponds to a different combination of the constants c₁ and c₂. We can start by selecting various values for c₁ and c₂ and solving the system numerically to obtain points on the trajectories. By connecting these points, we can visualize the phase plane diagram.

The trajectories will exhibit spiraling behavior due to the presence of complex eigenvalues (-2±3i). The direction and shape of the spirals depend on the values of c₁ and c₂. The phase plane diagram provides insights into the long-term behavior and stability of the system.

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Related Questions

The diameter of a tree increases by about 1/8 inch each year. Write an equation that represents x, the increase in the diameter of the tree, in the last y years.

Answers

According to the statement, the diameter increases by 1/8 inch each year, which means that the increase of the diameter is given by the number of years times 1/8.

Taking x as the increase and y as the number of years, the equationthat represents x in terms of y is:

\(x=\frac{1}{8}y\)

15. Describe the three general steps
for producing a recombinant DNA (rDNA) vector, state how rDNA can
be introduced into cells, and discuss the clinical applications of
rDNA.

Answers

Producing rDNA involves isolating and cleaving DNA, inserting fragments into a vector, and transforming host cells. rDNA can be introduced via transformation, transfection, or viral vectors. Clinical applications include protein production, gene therapy, vaccines, and diagnostics.

Producing a recombinant DNA (rDNA) vector involves several general steps. Here are the three main steps involved in the process:

Isolation and Cleavage of DNA:

The first step is to isolate the desired DNA fragments from the source organism. This can be done using various techniques such as PCR (Polymerase Chain Reaction) or restriction enzyme digestion. Restriction enzymes are enzymes that cut DNA at specific recognition sites. By using the appropriate restriction enzymes, the desired DNA fragment and a vector DNA can be cut at specific sites. The vector is usually a plasmid, which is a small circular DNA molecule.

Insertion of DNA Fragments into the Vector:

Once the DNA fragments and vector have been cut, they are mixed together and joined through a process called ligation. DNA ligase is used to catalyze the formation of covalent bonds between the ends of the DNA fragments and the vector. This creates a recombinant DNA molecule containing the desired DNA fragment within the vector. The recombinant DNA molecule is then introduced into host cells for replication.

Transformation of Host Cells:

The recombinant DNA molecules need to be introduced into host cells to produce multiple copies of the recombinant DNA. This is typically done using a process called transformation. Host cells, such as bacteria or yeast, are treated in a way that makes them more receptive to taking up the recombinant DNA. Methods for transformation include heat shock, electroporation, or using chemical agents. Once the host cells have taken up the recombinant DNA, they can be grown in culture to produce large quantities of the desired DNA fragment.

Introduction of rDNA into Cells:

Recombinant DNA can be introduced into cells using various methods, depending on the type of cells being targeted. Some common techniques include:

Transformation: As mentioned earlier, host cells, such as bacteria or yeast, can be treated to make them receptive to taking up the recombinant DNA. This can be achieved by exposing the cells to heat shock, electroporation, or using chemical agents.

Transfection: This method is used for introducing rDNA into eukaryotic cells, including animal cells. It involves the use of techniques such as calcium phosphate precipitation, liposome-mediated transfection, or electroporation.

Viral Vectors: Certain viruses, such as retroviruses, adenoviruses, or lentiviruses, can be modified to carry the recombinant DNA. These viral vectors can then infect target cells and deliver the rDNA into the host genome.

Clinical Applications of rDNA:

Recombinant DNA technology has revolutionized biomedical research and has led to numerous clinical applications. Some important applications include:

Production of Therapeutic Proteins: rDNA technology allows for the production of large quantities of therapeutic proteins, such as insulin, growth factors, clotting factors, and monoclonal antibodies. These proteins can be used to treat various diseases, including diabetes, cancer, and genetic disorders.

Gene Therapy: rDNA vectors can be used to deliver functional copies of genes into target cells to correct genetic defects. This holds promise for the treatment of inherited diseases caused by single gene mutations, such as cystic fibrosis and muscular dystrophy.

Vaccine Development: Recombinant DNA technology has been instrumental in the development of vaccines. By expressing specific antigens from pathogens, recombinant vaccines can be created to stimulate an immune response without causing disease.

Diagnostic Tools: Recombinant DNA techniques are used to produce specific DNA or RNA probes for diagnostic purposes. These probes can detect the presence of specific genes or mutations associated with diseases, aiding in early detection and personalized medicine.

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3. The slope of a line shows the___
for that line. This means it tells us how far ____ the line moves each time you move over one unit on the x-axis.
for that line.

Answers

The slope of a line shows the distance of that line. This means it tells us how far the line moves each time you move over one unit on the x-axis for that line.

What is the slope of a line?

The slope of a line can be defined a number that describes the direction and steepness of the line.

It is also known as gradient

It is denoted by the letter 'm'

Thus, the slope of a line shows the distance of that line. This means it tells us how far the line moves each time you move over one unit on the x-axis for that line.

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please help! i’ve been stuck on this question for the longest.

please help! ive been stuck on this question for the longest.

Answers

Answer:

57%

Step-by-step explanation:

Answer:

I think the first one 57%

Step-by-step explanation:

hope this helps sorry if it doesn't have a good rest of your afternoon/day :) ❤

On the first day it was posted online, a music video got 1850 views. The number of
views that the video got each day increased by 20% per day. How many total views
did the video get over the course of the first 5 days, to the nearest whole number?

Answers

Answer:

You can use a function to solve this.

Since we are talking about percents, this will be an exponential function.

The general form of exponential function is  where a is the y intercept and b is the rate of change.

For this question, we have a percentage thingamajig here. The first thing we need to do is convert the percentage to a decimal. So if it is a 16% increase, we will convert that to 1.16. 1.16 will be the variable b

The video got 250 views on the first day. So that means the variable a will equal 250.

The final function will be:

To finally solve this, we need to replace f(x) with f(12) and the other x in the formula with 12 as well. This is because the question is asking for the number of views in 12 days.

So after solving the function, we get 1484.0067... but since we can't have a fraction of a view, we will round that down to 1484 views.Step-by-step explanation:

The total number of views after 5 days is 3836.

What is percentage?

Percentage is defined as a given part or amount in every hundred. It is a fraction with 100 as the denominator and is represented by the symbol "%".

Given that, on the first day it was posted online, a music video got 1850 views.

The number of views that the video got each day increased by 20% per day.

Sn = a(1 – r)ⁿ/(1 – r)

S₅= 1850(1+0.2)⁵/(1+0.2)

= (1850×1.2⁵)/1.2

= 4603.392/1.2

= 3836.16

≈ 3836

Therefore, the total number of views after 5 days is 3836.

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Answer Choices
A)neither Anne nor Tim
B)both Anne and Ti
C)only Anne
D)only Tim
WILL MAKE THE BRAINLIEST ANSWER IF RIGHT!!

Answer ChoicesA)neither Anne nor TimB)both Anne and TiC)only AnneD)only TimWILL MAKE THE BRAINLIEST ANSWER

Answers

Answer:

c) only Anne

Step-by-step explanation:

I just did the test. Hope this helps! : )

In parallelogram TUVW, the diagonals tv and uw intersect at point z. If tz =5y -1, uz =2x, vt =78, and wz =3y +6, what is the sum of x+y

Answers

The sum of x and y i.e (x+y) is equal to 23

What is parallelogram law?

When two diagonals of a parallelogram bisect each other. Each diagonal bisects the parallelogram into two congruent triangles. The Sum of the square of all the sides of a parallelogram is equal to the sum of the square of its diagonals.

This implies that line uz = wz, and vz= tz

therefore 3y+6= 2x equation 1

since vt = 78

5y-1= 78-(5y-1) equation 2

5y-1= 78-5y+1

collecting like terms,

5y+5y= 78+1+1

10y= 80

divide both sides by 10

y= 80/10

y= 8

substituting 8 for y in equation 1

3×8+6= 2x

24+6= 2x

30= 2x

divide both sides by 2

x= 30/2= 15

therefore the sum of x and y = 15+8= 23

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A grocery store wants to examine the relationship between the sales amounts each day at two different locations, store A and store B. The sales amount each day, in dollars, was recorded for 10 days at each store. The least-squares regression line is yˆ=−3,000+1.2x, where x represents the sales amounts each day at store A and y represents the sales amounts each day at store B. If the mean of the 10 sales amounts for store B is $45,000, what is the mean of the 10 sales amounts for store A?

Answers

Answer:

The mean of the 10 sales amounts for store A is $40,000.

Step-by-step explanation:

Given;

yˆ= −3,000 + 1.2x ...................... (1)

Where;

x = sales amounts each day at store A or the mean of the 10 sales amounts for store A = ?

yˆ = sales amounts each day at store B or the mean of the 10 sales amounts for store B = $45,000

Substituting y = 45,000 into equation (1) and solve for x, we have:

45,000 = −3,000 + 1.2x

45,000 + 3,000 = 1.2x

48,000 = 1.2x

x = 48,000 / 1.2

x = 40,000

Therefore, the mean of the 10 sales amounts for store A is $40,000.

If you were to hypothesize that communication students will have a higher average score on the oral communication measures, you would have a ______.

Answers

If I were to hypothesize that communication students will have a higher average score on the oral communication measures,

I would have a research hypothesis. A research hypothesis is a statement that is used to explain a relationship between two or more variables,

in this case, the relationship between being a communication student and having a higher score on oral communication measures.

The hypothesis can then be tested through research and analysis of data to determine if there is a significant correlation between the two variables. In order to fully test this hypothesis,

it would be necessary to gather data on both communication students and non-communication students and compare their scores on oral communication measures.

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Does anyone know this?

Does anyone know this?

Answers

Answer: 12

Step-by-step explanation:

I'll give brainiest
A trapezoid is a parallelogram true a false
pls explain why

Answers

Answer:

True

Explanation:

Niko and Carlos are studying parallelograms and trapezoids. They agree that a parallelogram is a quadrilateral with two pairs of parallel sides. ... A trapezoid has one pair of parallel sides and a parallelogram has two pairs of parallel sides. So a parallelogram is also a trapezoid.

Answer:

Trapezoids have only one pair of parallel sides; parallelograms have two pairs of parallel sides. so no

Step-by-step explanation:

For a two-dimensional potential flow, the potential is given by 1 r (x, y) = x (1 + arctan x² + (1+ y)², 2πT where the parameter A is a real number. 1+y x Hint: d arctan(x) dx 1 x² +1 (1) Determine the expression of the velocity components ux and uy. (2) Determine the value of I such that the point (x, y) = (0,0) is a stagnation point. (3) Assuming for the far field, the pressure and constant density are P. and p, respectively, determine the pressure at the point (0, -2). (4) The flow field corresponds to a flow around a cylinder. (Hint: Stream function is needed.) (a) Determine the centre and radius of the cylinder. (b) Determine the magnitude and direction of the resulting forcing acting on the cylind

Answers

For a two-dimensional potential flow, the potential is given by 1 r (x, y) = x (1 + arctan x² + (1+ y)², 2πT where the parameter A is a real number. Given potential function is;ϕ(x,y) = x(1 + arctan(x² + (1+y)²))/2πT

To find velocity components ux and uy, we need to take partial derivative of potential functionϕ(x,y) = x(1 + arctan(x² + (1+y)²))/2πTUsing the chain rule;    ∂ϕ/∂x = ∂ϕ/∂r * ∂r/∂x + ∂ϕ/∂θ * ∂θ/∂x                                                                                             = cosθ * (1/r) * x(1+arctan(x² + (1+y)²))/2πT           - sinθ * (1/r) * x(1+arctan(x² + (1+y)²))/2πT ∂ϕ/∂y = ∂ϕ/∂r * ∂r/∂y + ∂ϕ/∂θ * ∂θ/∂y                                                                                              = cosθ * (1/r) * x(1+arctan(x² + (1+y)²))/2πT           - sinθ * (1/r) * x(1+arctan(x² + (1+y)²))/2πTNow, replace cosθ and sinθ with x/r and y/r respectively∂ϕ/∂x = x/(x²+y²) * x(1+arctan(x² + (1+y)²))/2πT- y/(x²+y²) * x(1+arctan(x² + (1+y)²))/2πT= [x²-y²]/(x²+y²) * x(1+arctan(x² + (1+y)²))/2πT∂ϕ/∂y = y/(x²+y²) * x(1+arctan(x² + (1+y)²))/2πT + x/(x²+y²) * x(1+arctan(x² + (1+y)²))/2πT= [2xy]/(x²+y²) * x(1+arctan(x² + (1+y)²))/2πT(2) To find stagnation point, we have to find (x,y) such that ux = uy = 0 and ϕ(x,y) is finite. Here, from (1) we get two equations;  x(1+arctan(x² + (1+y)²))/2πT= 0 and  x(1+arctan(x² + (1+y)²))/2πT + y(1+arctan(x² + (1+y)²))/2πT= 0For (1), either x=0 or arctan(x² + (1+y)²) = -1, but arctan(x² + (1+y)²) can't be negative so x=0. Thus, we get the condition y= -1  from (2)So, stagnation point is (0, -1).(3) For the far field, pressure is p, density is P. In potential flow, we have;  P = ρv²/2 + P0,  where P0 is constant pressure. Here, P0 = P and v = ∇ϕ   so, P = ρ[ (∂ϕ/∂x)² + (∂ϕ/∂y)² ]/2Using expressions of ∂ϕ/∂x and ∂ϕ/∂y obtained above, we can find pressure at (0,-2).(4) Given flow is around a cylinder. For flow around cylinder, stream function can be written as;   ψ(r,θ) = Ur sinθ (1-a²/r²)sinθTo find centre and radius of the cylinder, we find point where velocity is zero. We know that ψ is constant along any streamline. So, at the boundary of cylinder, ψ = ψ0, and at the centre of the cylinder, r=0.Using stream function, it is easy to show that ψ0= 0.So, at boundary of cylinder; U(1-a²/R²) = 0, where R is radius of cylinder, which gives R=aSimilarly, at centre; U=0To find the resulting force on the cylinder, we first have to find the lift and drag coefficients;  C_d = 2∫_0^π sin²θ dθ = π/2   and  C_l = 2∫_0^π sinθ cosθ dθ = 0We know that C_d = F_d/(1/2 ρ U²L) and C_l = F_l/(1/2 ρ U²L)where L is length of cylinder.So, F_d = π/2 (1/2 ρ U²L) and F_l= 0. Thus, the resulting force is F= (π/2) (1/2 ρ U²L) at an angle 90° to the flow direction.

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Using these values, we can write Bernoulli's equation as: P + 1/2 * ρ * ((1 + arctan(5))^2 + (4/3)^2) = P_far

P = P_far - 1/2 * ρ * ((1 + arctan(5))^2 + (4/3)^2)

(1) To determine the expression for the velocity components ux and uy, we can use the relationship between velocity and potential in potential flow:

ux = ∂Φ/∂x

uy = ∂Φ/∂y

Taking the partial derivatives of the potential function Φ(x, y) with respect to x and y:

∂Φ/∂x = (1+arctan(x^2+(1+y)^2)) - x * (1/(1+x^2+(1+y)^2)) * (2x)

∂Φ/∂y = -x * (1/(1+x^2+(1+y)^2)) * 2(1+y)

Simplifying these expressions, we have:

ux = 1 + arctan(x^2+(1+y)^2) - 2x^2 / (1+x^2+(1+y)^2)

uy = -2xy / (1+x^2+(1+y)^2)

(2) To find the value of A such that the point (x, y) = (0,0) is a stagnation point, we need to find the conditions where both velocity components ux and uy are zero at that point. By substituting (x, y) = (0,0) into the expressions for ux and uy:

ux = 1 + arctan(0^2+(1+0)^2) - 2(0)^2 / (1+0^2+(1+0)^2) = 1 + arctan(1) - 0 = 1 + π/4

uy = -2(0)(0) / (1+0^2+(1+0)^2) = 0

For the point (x, y) = (0,0) to be a stagnation point, ux and uy must both be zero. Therefore, A must be chosen such that:

1 + π/4 = 0

A = -π/4

(3) To determine the pressure at the point (0, -2), we can use Bernoulli's equation for potential flow:

P + 1/2 * ρ * (ux^2 + uy^2) = constant

At the far field, where the velocity is assumed to be zero, the pressure is constant. Let's denote this constant pressure as P_far.

At the point (0, -2), the velocity components ux and uy are:

ux = 1 + arctan(0^2+(1-2)^2) - 2(0)^2 / (1+0^2+(1-2)^2) = 1 + arctan(5) - 0 = 1 + arctan(5)

uy = -2(0)(-2) / (1+0^2+(1-2)^2) = 4 / 3

Using these values, we can write Bernoulli's equation as:

P + 1/2 * ρ * ((1 + arctan(5))^2 + (4/3)^2) = P_far

Solving for P at the point (0, -2), we have:

P = P_far - 1/2 * ρ * ((1 + arctan(5))^2 + (4/3)^2)

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Given that f(x,y)=4x1 1x2y2−7y2, f(x,y)=4x1 1x2y2−7y2, what is the maximum rate of change of ff at the point (−2,5)?

Answers

The maximum rate of change of the function f(x,y) at the point (-2,5) is approximately 215.60.

To find the maximum rate of change of the function f(x,y) = 4x1x2y2 - 7y2 at the point (-2,5), we need to calculate the gradient vector and evaluate it at that point. The first paragraph provides a summary of the answer, and the second paragraph explains the details of the calculations.

The gradient vector of a function represents the direction of the steepest increase at any given point. To find the maximum rate of change, we need to calculate the magnitude of the gradient vector at the point (-2,5).

The gradient vector of f(x,y) = 4x1x2y2 - 7y2 is given by:

∇f = (∂f/∂x1, ∂f/∂x2, ∂f/∂y)

To calculate the partial derivatives, we differentiate each term of the function with respect to the corresponding variable:

∂f/∂x1 = 4x2y2

∂f/∂x2 = 4x1y2

∂f/∂y = -14y

Substituting the values x1 = -2, x2 = 5, and y = 5 into the partial derivatives, we can evaluate the gradient vector at the point (-2,5):

∇f(-2,5) = (4(-2)(5)^2, 4(-2)(5), -14(5))

         = (-200, -40, -70)

The magnitude of the gradient vector represents the maximum rate of change of the function at the given point:

Magnitude = |∇f(-2,5)| = √((-200)^2 + (-40)^2 + (-70)^2)

                       = √(40000 + 1600 + 4900)

                       ≈ √46500

                       ≈ 215.60

Therefore, the maximum rate of change of the function f(x,y) at the point (-2,5) is approximately 215.60.

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HELP AND ILL LOBE U FORVEER

HELP AND ILL LOBE U FORVEER

Answers

Answer:

A:4

Step-by-step explanation:

(12-4) + -8/2 = 8 + -4 = 4

hoped this helped!

Answer:

A

Step-by-step explanation:

(12-x)+y/2

(12-4)+-8/2

8+-8/2

4

a swimming pool is in the shape of a rectangular prism it holds 1440 cubic feet of water if the base mesures 15 feet by 12 feet then how ddep is the ppol

Answers

Answer:

The pool is 8 feet deep

Step-by-step explanation:

Holding means the area, and we know that area can be found using;

-> length * width * height

or

-> base * height

     [] The base is length times width

base * height = 1,440

(15 * 12) * height = 1,440

(180) * height = 1,440

height = \(\frac{1440}{180}\)

height = 8 feet

Have a nice day!

     I hope this is what you are looking for, but if not - comment! I will edit and update my answer accordingly.

- Heather

6. A certain town has 25,000 families. The average number of children per family is 3 , with an SD of 0.60.20% of the families have not children at all. The distribution is normal. (a) a simple random sample of 900 families is chosen. 18% of 900 families has not children. Is this reasonable. (b) Out of 900 families, the average number of children per family is 2.9. Is this reasonable?

Answers

Yes, the 18% of 900 families have no children is reasonable. Yes, the average number of children per family being 2.9 out of 900 families is reasonable.

Here's why:Given that 20% of the families have no children at all and we want to check whether it is reasonable for 18% of 900 families to have no children.

Let us first calculate the number of families with no children using the mean and standard deviation of the distribution. We know that the mean number of children per family is 3 and the standard deviation is 0.60.

So, the number of families without children would be 3 - 0.60 * 2 = 1.8.Let's check what percentage of families have no children using this information:20% of 25,000 families = 5000 families1.8 children per family is the mean of the families with no children.

So, 5000 families with no children * (1/1.8) = 2777.78 families with no childrenThe total number of families we are looking at is 900.

So, the number of families without children in 900 families can be calculated as: (2777.78/25000) * 900 = 100. So, 100 families out of 900 not having children is reasonable.  

Here's why:Given that the mean number of children per family is 3 and the standard deviation is 0.60. We want to check whether it is reasonable to have an average of 2.9 children out of 900 families.

Let's calculate the z-score for this value:z = (x - μ) / σwhere x = 2.9, μ = 3, and σ = 0.60z = (2.9 - 3) / 0.60 = -0.1667We can look up this z-score in the standard normal distribution table to find the probability of getting a sample mean of 2.9 or less.

The probability is 0.4332 or 43.32%.This probability is greater than 5%, which is the level of significance. Therefore, we can conclude that it is reasonable to have an average of 2.9 children out of 900 families.

To sum up, 18% of 900 families having no children is reasonable and the average number of children per family being 2.9 out of 900 families is also reasonable.

The normal distribution with mean 3 and SD 0.6 was used to make these conclusions.

The calculations show that the sample data does not deviate significantly from the population parameters, which supports the validity of these conclusions.

The sample size of 900 is large enough to produce reliable estimates of the population parameters, so we can trust these results.

The mean and standard deviation of the population distribution are used to calculate the expected frequencies of the sample data.

The z-score is then calculated to find the probability of getting the observed sample data. The results show that the sample data is consistent with the population parameters.

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Given the equation negative 26 equals y over 13, solve for y.

Answers

Answer:

y = -338

Step-by-step explanation:

The equation will be,

→ -26 = y ÷ 13

→ y/13 = -26

Now the value of y will be,

→ y/13 = -26

→ y = -26 × 13

→ [ y = -338 ]

Hence, the value is -338.

Please help me find the answer to this question

Please help me find the answer to this question

Answers

The measure of Angle D in a parallelogram is 88 degrees.

Explain about parallelogram ?

A parallelogram is a quadrilateral with two pairs of parallel sides. The opposite sides of a parallelogram are equal in length and parallel to each other. The opposite angles are also equal in measure.

Properties of a parallelogram:

Opposite sides are parallel.Opposite sides are equal in length.Opposite angles are equal in measure.Consecutive angles are supplementary, i.e. their sum is 180 degrees.Diagonals bisect each other.

According to the question:
Since EFDM is a parallelogram, we know that opposite angles are equal. Therefore,

Angle E = Angle M

Angle D = Angle F

We're given:

Angle E = 16x + 12

Angle D = 18x - 2

So we have:

Angle M = 16x + 12

Angle F = 18x - 2

The sum of the angles in a parallelogram is 360 degrees. Therefore, we have:

Angle E + Angle F + Angle D + Angle M = 360

Substituting the given values, we get:

(16x + 12) + (18x - 2) + (16x + 12) + (18x - 2) = 360

72x + 20 = 360

72x = 340

x = 5

Now we can find the values of Angle E, Angle D, Angle F and Angle M:

Angle E = 16x + 12 = 16(5) + 12 = 92 degrees

Angle D = 18x - 2 = 18(5) - 2 = 88 degrees

Angle F = Angle D = 88 degrees

Angle M = Angle E = 92 degrees

Therefore, the measure of Angle D is 88 degrees.

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HELLLLPPPP?!!ASAP


Coordinates are (-4,-6) (9,7)

HELLLLPPPP?!!ASAPCoordinates are (-4,-6) (9,7)

Answers

The coordinate of point 3 / 10 away from A in the direction of AB is (6, 4).

What is section formula?

Section formula is used in Coordinate geometry to find the ratio between two points on a line given one another point on the line.

Given that,

AB is a line segment.

The coordinate of A is (-4, -6) and that of B is (9, 7).

The distance of the point C 3 / 10 from A is 7 / 10 from B.

Suppose the point is C and its coordinate is (x, y).

Thus, the point c divides AB in the ratio AC : CB = 3 : 10.

Now, use section formula to get the coordinate of the given point as,

x = (mx₁ + nx₂) / (m + n)  and y = (my₁ + ny₂) / (m + n)

Substitute the respective values to get the coordinates of C as,

x = (3 × -4 + 10 × 9) / (3 + 10)  and y = (3 × -6 + 10 × 7) / (3 + 10)

⇒ x = 6 and y = 4

Hence, the coordinate of the given point is (6, 4).

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Can someone help me with this question

Can someone help me with this question

Answers

The probability that the selected element is a member of A n B is 2/9

How to complete the number line?

The elements of the set are given as:

E = {1,2,3,4,5,6,7,8,9}

A = {1,3,4,8,9}

B = {2,4,9}

Using the above parameters, we have:

A only = {1, 3, 8}

B only = {2}

A and B = {4, 9}

None = {5,6,7}

The above dataset is the represented using the attached Venn diagram

How to determine the probability?

In (a), we have:

A and B = {4, 9}

E = {1,2,3,4,5,6,7,8,9}

The probability is then calculated as:

P(A n B) = n(A n B)/n(E)

This gives

P(A n B) = 2/9

Hence, the probability is 2/9

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Can someone help me with this question

One rule of thumb for estimating crowds is that each person occupies 360 square inchesUse this rule to estimate the crowd size of a section that is 20 feet deep by 20 feet wide of a parade route. HINTthere are 12 inches in one foot

Answers

Therefore , the solution of the given problem of surface area comes out to be 160 peoples can be fit in that region.

Surface area is defined

Its surface area is a good indicator of how much space it takes up overall. When estimating the surface area of a three-dimensional shape, the entire environment is taken into consideration. Its surface area determines how big something is overall. The sum of the faces on any and all six of a cuboid's rectangular sides yields the amount of water contained within.

Here,

Given : one person occupies 360 square inches

is 2.5 square foot.

So,

The given dimension of region are :

length = 20 feet and width 20 feet.

Thus,

=> Area = 20*20

=> Area = 400 square foot.

So , number of people in that area will be :

=> 400/2.5

=> 160 peoples.

Therefore , the solution of the given problem of surface area comes out to be 160 peoples can be fit in that region.

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if one in four adults own stocks, then what type of probabilty distribution would be used to determine the probability in a random sample of 10 people that exactly three own stocks?

Answers

The probability distribution that would be used in this scenario is the binomial distribution.

The binomial distribution is used to calculate the probability of a certain number of successes in a fixed number of independent trials, given a known probability of success in each trial. In this case, the number of successes is owning stocks, the number of trials is 10 people, and the probability of success is one in four adults owning stocks.

In this case, the probability that exactly three out of ten people own stocks, given that one in four adults own stocks, you would use the binomial probability distribution. The reasoning for this is because the binomial distribution is used when there are a fixed number of trials (in this case, 10 people), each trial has only two possible outcomes (owning stocks or not owning stocks), and the probability of success (owning stocks) is the same for each trial (1 in 4 or 0.25).

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If the measure of F
A
E
B
D
с

If the measure of FAEBD

Answers

Answer: 75

Step-by-step explanation:

Because f is corresponding angle that Make a 90 degree angle

Find the equation of this line.
y = x + [ ]

Find the equation of this line.y = x + [ ]

Answers

Its y=x + 2 the line doesnt in 1

The Equation of line is y = -x + 3.

What is Slope?

A line's slope is determined by how its y coordinate changes in relation to how its x coordinate changes. y and x are the net changes in the y and x coordinates, respectively. Therefore, it is possible to write the

change in y coordinate with respect to the change in x coordinate as,

m = Δy/Δx where, m is the slope

Take the points (4, -1) and (0, 3).

so, the slope of line is

m = (3+ 1)/ (0-4)

m = 4/ (-4)

m = -1

So, the equation of line

y= mx+ b

y= -x + b

and, 3 = b

So, the required equation is y = -x + 3.

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x + 9 <4x plz awser​

Answers

Answer:

x>3

Step-by-step explanation:

Solve for x and graph the solution on the number line below. x−9≤ −4

Answers

Answer: x ≤ 5

Step-by-step explanation:

x - 9  -->   x + (-9)

-9 + 5 = -4

mikayla lives 4 miles north and 6 miles west of the pizzeria. will the pizzeria deliver to her home?

Answers

pizzeria will not deliver to mikayla as distance is out of radius.

Coverage location of pizzeria company.

According to question, as the reference with the origin of the circle, it can deliver pizzeria in the radius of 6 miles

According to given data:

mikayla lives 4 miles north and 6 miles west,

So, distance of mikayla from company,

By using Pythagoras theorem

Distance = √(4)^2 + (6)^2 = √52 miles

As distance is greater than radius, pizzeria will not deliver to mikayla.

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The confidence associated with an interval estimate is called the:.

Answers

The confidence associated with an interval estimate is called the confidence level.

When making an interval estimate, such as estimating a population parameter based on a sample, it is important to provide an indication of the level of confidence we have in the estimate. The confidence level represents the probability or level of certainty that the true population parameter falls within the calculated interval.

For example, if we calculate a 95% confidence interval for the mean height of a population, it means that we are 95% confident that the true population mean height lies within that interval. This implies that if we were to repeat the sampling and interval estimation process multiple times, approximately 95% of the intervals would contain the true population parameter.

The confidence level is typically expressed as a percentage, such as 90%, 95%, or 99%. A higher confidence level indicates a greater level of certainty in the interval estimate but also results in a wider interval.

In summary, the confidence level associated with an interval estimate represents the level of confidence or probability that the interval contains the true population parameter.

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Find the matrix A of the rotation about the y-axis through an angle of 2
π

, clockwise as viewed from the positive y-axis. A=[− - −[.

Answers

To find the matrix A of rotation about the y-axis through an angle of 2π​, clockwise as viewed from the positive y-axis, use the following steps.Step 1: Find the standard matrix for rotation about the y-axis.

The standard matrix for rotation about the y-axis is given as follows:|cosθ 0 sinθ|0 1 0|-sinθ 0 cosθ|where θ is the angle of rotation about the y-axisStep 2: Substitute the given values into the matrixThe angle of rotation is 2π​, clockwise, so the angle of rotation in the anti-clockwise direction will be -2π​.Substitute θ = -2π/3 into the standard matrix:|cos(-2π/3) 0 sin(-2π/3)|0 1 0|-sin(-2π/3) 0 cos(-2π/3)|=|cos(2π/3) 0 -sin(2π/3)|0 1 0|sin(2π/3) 0 cos(2π/3)|Step 3: Simplify the matrixThe matrix can be simplified as follows:

A = [cos(2π/3) 0 -sin(2π/3)][0 1 0][sin(2π/3) 0 cos(2π/3)]A = |(-1/2) 0 (-√3/2)|0 1 0| (√3/2) 0 (-1/2)|Therefore, the matrix A of the rotation about the y-axis through an angle of 2π​, clockwise as viewed from the positive y-axis, is:A = [−(1/2) 0 −(√3/2)] 0 [√3/2 0 −(1/2)]The answer should be in the form of a matrix, and the explanation should be at least 100 words.

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The length of a rectangle is three times its width. The perimeter is 40. What is the area?

Answers

Let x be the width.
If the length is three times its width
And a rectangle has 2 lengths and 2 widths.

2 (3x) + (1x) 2= 40
6x + 2x = 40
8x = 40
/8
x = 5

If x = 5
The length is 15
The width is 5

Formula for area = base x height
15 x 5 = 75

Answer = 75
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