What is the distance between (3,-4) and (6,9)?
use the distance formula
A. 5.83
B. 7.47
C. 10.25
D. 13.34

Answers

Answer 1

Answer:

D. 13.34

Step-by-Step Explanation:

distance formula

[tex]d=\sqrt{(x2-x1)^2 +(y2-y1)^2} \\d=\sqrt{(6-3)^2 +(9-(-4))^2} \\d=\sqrt{178}[/tex]


Related Questions

Please solve the problem 4. 21
Deduce from the previous problem that the graph of equation ax2 + 2bxy + cy2 = 1 is
(a) an ellipse if ac – b^2->0, (b) a hyperbola if ac-b^2 <0.

Answers

4b^2 - 4ac < 0

b^2 - ac < 0

This is the condition for a hyperbola.

The previous problem, which is not included in the question, likely involves finding the eigenvalues of the matrix associated with the quadratic form given by the equation ax^2 + 2bxy + cy^2 = 1. Once we have the eigenvalues, we can determine the type of conic section represented by the equation.

Let λ1 and λ2 be the eigenvalues of the matrix associated with the quadratic form. Then we have the following cases:

λ1 and λ2 are both positive: In this case, the matrix is positive definite and the conic section is an ellipse.

λ1 and λ2 are both negative: In this case, the matrix is negative definite and the conic section is an ellipse.

λ1 and λ2 are both zero: In this case, the matrix is degenerate and the conic section is a pair of intersecting lines.

λ1 and λ2 have opposite signs: In this case, the matrix is indefinite and the conic section is a hyperbola.

Now, let's consider the discriminant of the quadratic form:

b^2 - 4ac

If this quantity is positive, then the eigenvalues have opposite signs and the conic section is a hyperbola. If it is negative, then the eigenvalues have the same sign and the conic section is an ellipse. If it is zero, then the conic section is a pair of intersecting lines.

So, for the equation ax^2 + 2bxy + cy^2 = 1, we have:

b^2 - 4ac = 4b^2 - 4ac

If this quantity is positive, then we have:

4b^2 - 4ac > 0

b^2 - ac > 0

This is the condition for an ellipse.

If this quantity is negative, then we have:

4b^2 - 4ac < 0

b^2 - ac < 0

This is the condition for a hyperbola.

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List the sample space for rolling a fair seven-sided die.

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

Answers

The sample space for rolling a fair seven - sided die is A. S = {1, 2, 3, 4, 5, 6, 7}.

What is sample space ?

To identify all probable results within a random experiment, we use a sample space. Rolling a seven-sided dice is one such experiment, which would entail as its possible outcomes the characters 1 through 7 representing each face of the die.

Claiming 8, an impossible outcome in this scenario, invalidates Option 2. Meanwhile, Option 3 lays emphasis on only a single feasible result among the seven possible outcomes realized from rolling a seven-sided die, and subsequently falls short of providing a complete list. Precisely put, when you roll the said dice, there will exist seven credible outcomes rather than one singular possibility.

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Evaluate the integral. Show that the substitution x = 4 sin(0) transforms / into / do, and evaluate I in terms of 0. Dx 1 / 7 = V16 - r? (Use symbolic notation and fractions where needed. Use C for the arbitrary constant. Absorb into C as much as possible. ) 1 = sin(0) + Incorrect

Answers

The integral solution is: ∫[tex](1/(7\sqrt{(16 - x^2)))} dx = (1/112) arcsin(x/4) + C.[/tex]

To evaluate the integral ∫[tex](1/(7\sqrt{(16 - x^2)))} dx[/tex] using the substitution x = 4 sin(θ), we can start by finding dx/dθ:

dx/dθ = 4 cos(θ)

∫[tex](1/(7\sqrt{(16 - x^2)))} dx[/tex]= ∫[tex](1/(7\sqrt{(16 - 16sin^2}[/tex](θ)))) ([tex]4cos[/tex](θ)) dθ

Simplifying the denominator, we get:

∫[tex](1/(7[/tex][tex]\sqrt{(16 - 16sin^2}[/tex](θ)))) [tex](4cos[/tex](θ)) dθ = ∫[tex](1/(28cos[/tex](θ))) dθ

Now we can use the trigonometric identity cos^2(θ) = 1 - sin^2(θ) to rewrite the denominator:

∫[tex](1/(28cos[/tex](θ))) dθ = ∫[tex](1/(28[/tex]√[tex](1 - sin^2[/tex](θ)))) dθ

dx = 4 cos(θ) dθ

∫[tex](1/(28√(1 - sin^2[/tex](θ)))) dθ = ∫[tex](1/(28√(1 - (x/4)^2))) (1/4) dx[/tex]

This is the form of the integral that we can evaluate using the substitution [tex]u = x/4[/tex] and the formula for the integral of [tex]1/[/tex] √[tex](1 - u^2)[/tex], which is arcsin(u) + C.

Substituting [tex]u = x/4[/tex] and simplifying, we get:

[tex](1/112)∫(1/√(1 - (x/4)^2)) dx = (1/112) arcsin(x/4) + C[/tex]

Therefore, the solution is:

[tex]∫(1/(7√(16 - x^2))) dx = (1/112) arcsin(x/4) + C[/tex]

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From question 1, recall the following definition. Definition. An integer n is divisible by 5 if there exists an integer k such that n= 5k. (a) Show that the integer n = 45 is divisible by 5 by verifying the definition: above. (b) Show that the integer n= -110 is divisible by 5 by verifying the definition above. (c) Show that the integer n = 0 is divisible by 5 by verifying the definition above. = (d) Use a proof by contradiction to prove the following theorem: Theorem 1. The integer n = 33 is not divisible by 5.

Answers

An integer is a whole number that can be either positive, negative, or zero. In mathematics, a theorem is a statement that has been proven to be true using logic and reasoning. Theorem 1 states that the integer n = 33 is not divisible by 5.

To show that an integer n is divisible by 5, we need to find an integer k such that n = 5k. Let's apply this definition to each of the given integers.

(a) To show that n = 45 is divisible by 5, we need to find an integer k such that n = 5k. We can see that k = 9 satisfies this condition since 5k = 5(9) = 45. Therefore, 45 is divisible by 5.

(b) To show that n = -110 is divisible by 5, we need to find an integer k such that n = 5k. We can see that k = -22 satisfies this condition since 5k = 5(-22) = -110. Therefore, -110 is divisible by 5.

(c) To show that n = 0 is divisible by 5, we need to find an integer k such that n = 5k. We can see that k = 0 satisfies this condition since 5k = 5(0) = 0. Therefore, 0 is divisible by 5.

(d) To prove Theorem 1, we will use proof by contradiction. Let's assume that n = 33 is divisible by 5, which means there exists an integer k such that n = 5k. Then, we have 33 = 5k, which implies that k = 6.6. However, k must be an integer according to the definition of divisibility. Therefore, we have reached a contradiction, and our assumption that n = 33 is divisible by 5 must be false. Hence, Theorem 1 is proven.

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if you give me new answer i will give you like
2. Suppose that Xn, n > 1 are i.i.d. random variables with P(X = 2) = 1/8. P(X = -1) = 1/2, P(X = 0) = 1/8, P(X = 1) = 1/4, Let Sn = 2-1 X; with So = 0. Let T be defined as vi= : T = min{n : Sn > 10 o

Answers

P(T > k | S10 = s, T2 > k) = P(T > k | S2 ≤ s) * P(T2 > k | S1 ≤ s, S2 ≤ s).

Note that P(T2 > k | S1 ≤ s, S2 ≤ s) = (1 - P(S1+S2 > s))^(

Here is an answer to your second question:

We are given that Xn, n > 1 are i.i.d. random variables with P(X = 2) = 1/8, P(X = -1) = 1/2, P(X = 0) = 1/8, P(X = 1) = 1/4. We define Sn = Σi=1n 2^-i Xi, with S0 = 0. We also define T as the first index n for which Sn > 10.

To find the expected value of T, we can use the definition of conditional expectation:

E[T] = E[E[T | S10 = s]]

Given S10 = s, we want to find the expected value of T. Note that T depends only on the values of Sn for n ≤ T. Therefore, given S10 = s, we can condition on the values of S1, S2, ..., S9, and compute the conditional probability distribution of T.

Let Tj be the first index at which Sj > s for j = 1, 2, ..., 9. Note that T1 = 1 and Tj is a function of X1, X2, ..., Xj, for j = 2, 3, ..., 9. Also note that T is the minimum of T1, T2, ..., T9.

To compute the conditional probability distribution of T given S10 = s, we can use the following observations:

If Tj > T for some j, then Sn ≤ s for all n ≤ Tj. Therefore, we have P(T > k | Tj > k) = P(T > k | Sj ≤ s) for all k > j.

If Tj ≤ T for all j, then Sn > s for all n ≤ T. Therefore, we have P(T > k | Tj > k for some j) = P(T > k | Sn > s) for all k.

Using these observations, we can compute the conditional probability distribution of T given S10 = s as follows:

If T1 > T, then T > Tj for all j, and we have

P(T > k | T1 > k) = P(T > k | S1 ≤ s) for all k > 1.

Therefore, by the law of total probability,

P(T > k | S10 = s, T1 > k) = P(T > k | S1 ≤ s) * P(T1 > k | S1 ≤ s).

Note that P(T1 > k | S1 ≤ s) = (1 - P(S1 > s))^(k-1) * P(S1 > s), since T1 is a geometric random variable with parameter P(S1 > s).

If T1 ≤ T and T2 > T, then T > Tj for j = 2, 3, ..., 9, and we have

P(T > k | T2 > k) = P(T > k | S2 ≤ s) for all k > 2.

Therefore,

P(T > k | S10 = s, T2 > k) = P(T > k | S2 ≤ s) * P(T2 > k | S1 ≤ s, S2 ≤ s).

Note that P(T2 > k | S1 ≤ s, S2 ≤ s) = (1 - P(S1+S2 > s))^(

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9. What number exceeds its square by the greatest amount? (2) DO NOT SOLVE. Just write the necessary equations for solving & related let statements.

Answers

To find the number that exceeds its square by the greatest amount, we can use these terms: "number" and "square."

Let "n" represent the number.
The square of the number is "n^2."

We are looking for the greatest difference between the number and its square, which can be represented as:

Difference (D) = n - n^2

To find the number that maximizes this difference, we can use calculus to find the critical points (where the derivative is zero or undefined). However, since you asked not to solve it, I'll provide the necessary equations for solving:

1. D = n - n^2
2. Find the derivative of D with respect to n: dD/dn

By following these steps, you can solve for the number that exceeds its square by the greatest amount.

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Describe the specific characteristics of the distributions [3 points each]
a. What are the characteristics of the discrete probability distribution function?
b. What are three characteristics of a binomial experiment?
c. What can you tell about outcomes of continious probability distribution? What is the graph and the area under the graph for this distribution? What is P(x = a)?

Answers

P(x = a), is always zero because there are an infinite number of possible values within the given range

a. The specific characteristics of the discrete probability distribution function are:
1. It represents the probabilities of a finite number of distinct outcomes, where each outcome has a non-negative probability.
2. The sum of the probabilities of all possible outcomes is equal to 1.
3. The probability of a particular outcome, P(x = a), can be directly computed from the function.

b. Three characteristics of a binomial experiment are:
1. There are a fixed number of trials (n) conducted independently.
2. Each trial has only two possible outcomes, often referred to as "success" and "failure".
3. The probability of success (p) is constant for all trials.

c. For continuous probability distribution:
1. Outcomes: The outcomes are represented by continuous random variables that can take an infinite number of values within a specified range.
2. Graph and area under the graph: The graph of the continuous probability distribution is a curve, and the area under the curve represents the probabilities associated with the range of values. The total area under the curve is equal to 1.
3. P(x = a): For a continuous distribution, the probability of the random variable equaling a specific value, P(x = a), is always zero because there are an infinite number of possible values within the given range.

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In science class, Beth learned that light travels faster than sound. Her teacher explained that
you can estimate how far away a lightning strike is by counting the number of seconds
between seeing the lightning and hearing thunder. She told Beth that light from a lightning
strike is visible almost instantly, but that thunder from the lightning strike travels 1 mile
every 5 seconds. You can use a function to estimate how far away lightning Is If It takes x
seconds to hear the thunder.
Is the function linear or exponential?
linear
exponential
Which equation represents the function?
g(x) - (-)*
g(x) = x

Answers

If the  teacher explained that you can estimate how far away a lightning strike is by counting the number of seconds.

The function is linearThe equation that represents the function is g(x) = 1/5x.

What is the equation?

A linear function is used to calculate how far away lightning is depending on how long it takes to hear thunder.

The function is represented by the equation:

Distance = Time × Speed

Where:

Distance is measured in miles

Speed is measured in miles per second =  1 mile per 5 seconds

Time is measured in seconds as the duration of the thunderclap.

The equation is

Distance  = (1/5) x time

Therefore the equation for the function is g(x) = 1/5x.

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he sum of two numbers is 3 . the larger number minus twice the smaller number is zero. find the numbers.

Answers

The smaller number is 1 and the larger number is 2. To find these numbers, we used algebraic equations and solved for one variable in terms of the other.

To solve this problem, we need to use algebraic equations. Let's call the smaller number "x" and the larger number "y".

From the problem, we know that:

x + y = 3 (the sum of two numbers is 3)

y - 2x = 0 (the larger number minus twice the smaller number is zero)

Now, we can solve for one variable in terms of the other:

y = 2x (by rearranging the second equation)

Substituting this into the first equation, we get:

x + 2x = 3

3x = 3

x = 1

Now that we know x is 1, we can use the equation y = 2x to find y:

y = 2(1) = 2

Therefore, the two numbers are 1 and 2.

In summary, the smaller number is 1 and the larger number is 2. To find these numbers, we used algebraic equations and solved for one variable in terms of the other. It's important to carefully read and understand the problem and to keep track of the information given.

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A student in eight grade notices that the current cost of tuition, books, and fees at a 4 year college is $15,000 per year. The family reads that there is an annual increase of $750 per year.

What will the the total cost of tuition, books, and fees for this student when this student attends college for four years, after graduating high school?

Answers

The total cost of tuition, books, and fees for this student when attending college for four years will be $64651

Assuming that the annual increase of $750 per year is compounded each year

we can use the formula for the future value of an annuity to calculate the total cost of tuition, books, and fees for the four years:

[tex]FV = PMT \frac{((1 + r)^n - 1)}{r}[/tex]

In this case, PMT = $15,000, r = 750/15000 = 0.05, and n = 4.

Plugging in these values, we get:

Total cost or FV = $15,000 x ((1 + 0.05)⁴ - 1) / 0.05

FV = $15,000 x(1.2155)-1)/0.05

FV = $15,000 x 0.2155/0.05

FV = $15,000 x4.31

FV = $64651

Hence, the total cost of tuition, books, and fees for this student when attending college for four years will be $64651

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PLEASE HELP ITS URGENT I INCLUDED THE GRAPHS AND WROTE THE PROBLEM DOWN!
Which graph represents the function f(x)=|x−1|−3 ?

Answers

The graph of the function f(x)=|x−1|−3 is the graph (b)

How to determine the graph of the function

From the question, we have the following parameters that can be used in our computation:

f(x)=|x−1|−3

Express properly

So, we have

f(x) = |x − 1| − 3

The above expression is a absolute value function

This means that

The graph opens upward vertex = (1, -3)

Using the above as a guide, we have the following:

The graph of the function is the graph b

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I need
2 examples for Multigrid Method for Linear system
( AMG
linear.system )
Please
help me

Answers

Hi! I'd be happy to help you with two examples of multigrid methods for linear systems.

1. Geometric Multigrid Method (GMG): This is a numerical method that efficiently solves linear systems arising from the discretization of partial differential equations (PDEs). It employs a hierarchy of grids and combines coarse-grid correction with fine-grid relaxation to accelerate convergence.

2. Algebraic Multigrid Method (AMG): This is another approach to solve large linear systems, particularly those originating from PDE discretizations. Unlike GMG, AMG does not require any geometric information. It automatically generates a hierarchy of coarser grids by analyzing the structure of the given linear system, making it suitable for unstructured grids or problems without an evident geometric background.

Both methods are effective in solving linear systems with high efficiency and have various applications in areas like computational fluid dynamics, structural mechanics, and image processing.

Two examples of multigrid methods for the linear system are the geometric multigrid method and the algebraic multigrid method.

1. Geometric Multigrid Method (GMG): This is a numerical method that efficiently solves linear systems arising from the discretization of partial differential equations. It employs a hierarchy of grids and combines coarse-grid correction with fine-grid relaxation to accelerate convergence.

2. Algebraic Multigrid Method (AMG): This is another approach to solving large linear systems, particularly those originating from PDE discretizations. Unlike GMG, AMG does not require any geometric information. It automatically generates a hierarchy of coarser grids by analyzing the structure of the given linear system, making it suitable for unstructured grids or problems without an evident geometric background.

Both methods are effective in solving linear systems with high efficiency and have various applications in areas like computational fluid dynamics, structural mechanics, and image processing.

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Please answer what the range is and how you got it. Thx

Answers

The range of the exponential function f(x) = -3^x - 1 is given as follows:

the set of real numbers less than -1.

What are the domain and range of a function?

The domain of a function is the set that contains all possible input values of the function, that is, all the values assumed by the independent variable x in the function.The range of a function is the set that contains all possible output values of the function, that is, all the values assumed by the dependent variable y in the function.

The function in this problem is given as follows:

f(x) = -3^x - 1.

-3^x is a reflection over the x-axis of 3^x, hence the range is composed by negative numbers, and the subtraction by 1 means that y = -1 is the horizontal asymptote, hence the range of the function is defined as follows:

the set of real numbers less than -1.

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suppose that a triangle has an area of 20ft squared and the dimensions are x and (x+2). Find the base and height for the triangle

Answers

Answer:

 43.3.

Step-by-step explanation:

· The area is approximately 43.3. The precise answer is 25 × √3. To get this answer, recall the formula for the area of an equilateral triangle of side a reads area = a2 …

Question 2 ( 7 Marks): Use substitution method to evaluate the following integral: I= ∫x √x²+1 dx

Answers

The value of the integral is (x²+1)^(3/2)/3 + C.

To evaluate the integral:

I = ∫x √(x²+1) dx

we can use substitution u = x²+1, which implies du/dx = 2x or dx = du/2x.

Substituting these values in the integral, we get:

I = ∫x √(x²+1) dx

Let u = x²+1, then

du/dx = 2x -> dx = du/2x

Substituting, we get:

I = ∫√u (du/2)

I = (1/2) ∫u^(1/2) du

I = (1/2) * (2/3) u^(3/2) + C

I = u^(3/2)/3 + C

I = (x²+1)^(3/2)/3 + C

Therefore, the value of the integral is (x²+1)^(3/2)/3 + C.

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Suppose you have a sequence of rigid motions to map AXYZ to APQR. Fill in the blank for each transformation.

Answers

Answer:I am sorry,I don't have an answer for that

Step-by-step explanation:

I need the 10 points sorry

suppose you like to keep a jar of change on your desk. currently, the jar contains the following: 8 pennies 13 dimes 12 nickels 22 quarters what is the probability that you reach into the jar and randomly grab a nickel and then, without replacement, a dime? express your answer as a fraction or a decimal number rounded to four decimal places.

Answers

Step-by-step explanation:

12 nickels out of (8+13+12+22 = 55) coins    12/55 chance of nickel

   now there are only 54 coins   and 13 are dimes  :   13/54 chance of dime

12/55 * 13/54 = 26/495 = .0525 chance

Consider the curve with parametric equations y=tand x = 3t-. eliminating the parameter 1, find the following: dy/dt

Answers

The derivative of y with respect to t is simply 1.

To eliminate the parameter t and express y in terms of x, we can solve for t in terms of x from the second equation:

x = 3t - 1

3t = x + 1

t = (x + 1)/3

Substituting this expression for t into the first equation, we get:

y = (x + 1)/3

Now we can differentiate y with respect to t and use the chain rule:

dy/dt = dy/dx * dx/dt

Since y is now expressed as a function of x, we can differentiate it with respect to x:

dy/dx = 1/3

And from the second equation, we have:

dx/dt = 3

Therefore:

dy/dt = (dy/dx) * (dx/dt) = (1/3) * 3 = 1

So the derivative of y with respect to t is simply 1.

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The Sigma Phi Delta Efficiency Contest was inaugurated in the academic year of 1933-1934, for the purpose of providing an impetus for more effective and efficient chapter operation. Currently the Efficiency Contest is composed of five (5) program areas.Which of the following is NOT a program area: A.Brotherhood Development B. Academic AchievementC. Pledge Education D. Fraternal EventsE. Chapter Operations

Answers

The program area that is NOT included in the Sigma Phi Delta Efficiency Contest is D. Fraternal Events.

The Efficiency Contest is focused on improving chapter operation through the program areas of Brotherhood Development, Academic Achievement, Pledge Education, Chapter Operations, and Community Service.

The other options (A. Brotherhood Development, B. Academic Achievement, C. Pledge Education, and E. Chapter Operations) are all part of the Efficiency Contest's program areas.

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The Gotham City News is moving to a paywall subscription service rather than a free news website with unlimited access. If subscribers would like to access more than 10 articles per month, they will need to pay a monthly subscription fee of $16.v However, if they are also weekly subscribers of the print edition of the newspaper, they receive a 60% discount on the online subscription rate. The monthly rate for the print edition of the newspaper is $27. Based on market research, the Times believes that 30% of the households that order the print edition will also order the website subscription. While there are basically no variable costs to the website version, the print edition does cost $16 per month to print and deliver to households.If marketing research indicates that an average print only subscriber will only continue their subscription for 24 months if they don't also purchase the digital edition, what is the 3 year CLV of a current print edition customer taking into consideration those that will choose print only (24 month) and those that choose to add the digital edition (who then drop the print after 16 months)?

Answers

The 3 year CLV of a current print edition customer is $22,560, taking into consideration those that will choose print only (24 month) and those that choose to add the digital edition (who then drop the print after 16 months).

To calculate the 3 year CLV of a current print edition customer, we need to consider two scenarios: those who choose print only and those who add the digital edition.

For those who choose print only, the CLV is calculated as follows:
CLV = (monthly rate - variable cost) x average lifespan x retention rate
CLV = ($27 - $16) x 24 months x 1
CLV = $264

For those who add the digital edition, the CLV is calculated as follows:
CLV = (monthly rate - variable cost) x average lifespan x retention rate
CLV = ($16 - $0) x 16 months x 0.5
CLV = $128

To calculate the total CLV, we need to take into account the 30% of print edition subscribers who also order the website subscription. Assuming a total of 100 print edition subscribers, 30 of them will also order the website subscription.

Total CLV = (print only CLV x 70) + (digital edition CLV x 30)
Total CLV = ($264 x 70) + ($128 x 30)
Total CLV = $18,720 + $3,840
Total CLV = $22,560

Therefore, we can state that the 3 year CLV of a current print edition customer is $22,560, taking into consideration those that will choose print only (24 month) and those that choose to add the digital edition (who then drop the print after 16 months).

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A rectangle with a perimeter of 16 units is dilated by a scale factor of 44. Find the perimeter of the rectangle after dilation. Round your answer to the nearest tenth, if necessary.

Answers

The perimeter of the rectangle after dilation is 704 units.

Given that,

A rectangle with a perimeter of 16 units is dilated by a scale factor of 44.

Original perimeter = 16 units

Scale factor = 44

The formula to find the perimeter of a rectangle is,

Perimeter = 2(l + w), where l is the length and w is the width.

Let original perimeter = 2(l + w) = 16 units

When the rectangle is dilated each dimension increase to 44.

l becomes 44l and w becomes 44w.

So perimeter becomes,

New Perimeter = 2 (44l + 44w)

                         = 2 × 44 (l + w)

                         = 44 × [2(l + w)]

                         = 44 × 16

                         = 704 units

Hence the perimeter of the rectangle is 704 units.

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The current cost of replacing a hot water boiler is $8,300. To provide a margin of error of 10% in each direction, what price range (high and low) would you calculate?

Answers

With a 10% margin of error in either direction, the price range for replacing the hot water boiler is $7,470 to $9,130.

To provide a margin of error of 10% in each direction, we need to calculate the high and low range by adding and subtracting 10% of the current cost from the current cost itself.

To calculate the high range, we can add 10% of the current cost to the current cost:

High range = $8,300 + (10% of $8,300)

High range = $8,300 + $830

High range = $9,130

To calculate the low range, we can subtract 10% of the current cost from the current cost:

Low range = $8,300 - (10% of $8,300)

Low range = $8,300 - $830

Low range = $7,470

Therefore, the price range for replacing the hot water boiler with a margin of error of 10% in each direction is between $7,470 and $9,130.

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There are 10 brown, 10 black, 10 green, and 10 gold marbles in bag. A student pulled a marble, recorded the color, and placed the marble back in the bag. The table below lists the frequency of each color pulled during the experiment after 40 trials..


Outcome Frequency
Brown 13
Black 9
Green 7
Gold 11


Compare the theoretical probability and experimental probability of pulling a brown marble from the bag.
The theoretical probability, P(brown), is 50%, and the experimental probability is 25%.
The theoretical probability, P(brown), is 50%, and the experimental probability is 22.5%.
The theoretical probability, P(brown), is 25%, and the experimental probability is 13.0%.
The theoretical probability, P(brown), is 25%, and the experimental probability is 32.5%.

Answers

The correct option is the last one:

The theoretical probability, P(brown), is 25%, and the experimental probability is 32.5%.

How to find the probabilities?

The theoretical probability is given by.

P  = 100%(number of brown marbles)/(total number)

Then we will get:

P  = 100%*10/40 = 25%

The experimental probability is given by the quotient between the number of times that a brown marble was pulled (13) and the total number of trials, here we have:

E = 100%*13/40

E = 32.5%

So we can see that the experimental probability is larger, and the correct option is the last one.

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Answer:

D

Step-by-step explanation:

Solve 14 - 3m = 4m
m =

Answers

Answer:

The answer is m = 2 .

Step-by-step explanation:

14 - 3m = 4m

14 = 4m + 3m

14 = 7m

14/7 = m

2 = m

m = 2

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To solve for "m", we need to isolate the variable on one side of the equation.

We can start by moving the "3m" term to the right side of the equation by adding it to both sides:

14 - 3m + 3m = 4m + 3m

Simplifying the left side of the equation, we get:

14 = 7m

Finally, we can isolate "m" by dividing both sides of the equation by 7:

14 ÷ 7 = 7m ÷ 7

2 = m

Therefore, the solution to the equation 14 - 3m = 4m is m = 2.

Local residents were surveyed to determine if they used private transportation or public transportation to get to work. The two-way table shows the results.
Determine whether each statement is true or false. Type "true" or "false" in the response boxes.

The majority of women surveyed use private transportation to get to work.

The majority of the people surveyed who use private transportation to get to work are men.

The majority of the people surveyed who use public transportation to get to work are women.

The majority of the men surveyed use public transportation to get to work.

Answers

Transportation refers to the different ways that people and/or products are moved from one location to another. The majority of the men surveyed use public transportation to get to work.

Transportation refers to the different ways that people and/or products are moved from one location to another. The ability and necessity to move increasing numbers of people or things across great distances at fast speeds in safety and comfort has grown, and this is a sign of civilization in general and of technical advancement in particular.

The majority of women surveyed use private transportation to get to work. True

The majority of the people surveyed who use private transportation to get to work are men. False

The majority of the people surveyed who use public transportation to get to work are women. True

The majority of the men surveyed use public transportation to get to work. False

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Answer:

The majority of women surveyed use private transportation to get to work.

true

The majority of the people surveyed who use private transportation to get to work are men.

false

The majority of the people surveyed who use public transportation to get to work are women.

true

The majority of the men surveyed use public transportation to get to work.

false

Step-by-step explanation:

Got this on study island

For which values of a and b does the function f(x) = ax/(b + x²) have a critical point at x = 2 and x = -2? + Select one: a. A = 1, b = 3 b. A = 4, b = 2 c. A = 2, b = 2 d. A = 1, b = 1 e. A = 1, b = 4

Answers

Values of a and b do the function f(x) = ax/(b + x²) have a critical point at x = 2 and x = -2 are A = 1, b = 4. The correct answer is option e. We need to find the first derivative of the function and set it equal to zero at x = 2 and x = -2.

The primary subordinate of f(x) is:

f'(x) = a(b - x²)/((b + x²)²)

Setting f'(2) = 0, we get:  a(b - 4)/((b + 4)²) =

Since a cannot be zero, we must have: b = 4

Setting f'(-2) = 0, we get: a(b - 4)/((b + 4)²) =

Since a cannot be zero, we must have: b = 4

Hence, as it were conceivable esteem for a and b could be a = 1 and b = 4.

We are able to check that this choice of a and b works by computing the moment subsidiary of f(x) and confirming that it is negative at x = 2 and x = -2, which would affirm that we have found a local maximum and a neighborhood least, separately. The moment subordinate of f(x) is:

f''(x) = 2ax(b - 3x²)/((b + x²)³)

f''(2) = -16/27 <

f''(-2) = -16/27 <

Subsequently, the proper reply is e. A = 1, b = 4.

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A potato chip manufacturer produces bags of potato chips that are supposed to have a net weight of 326 grams. Because the chips vary in size, it is difficult to fill the bags to the exact weight desired. However, the bags pass inspection so long as the standard deviation of their weights is no more than 3 grams. A quality control inspector wished to test the claim that one batch of bags has a standard deviation of more than 3 grams, and thus does not pass inspection. If a sample of 21 bags of potato chips is taken and the standard deviation is found to be 4.1 grams, does this evidence, at the 0.025 level of significance, support the claim that the bags should fail inspection? Assume that the weights of the bags of potato chips are normally distributed.
Step 1 of 3: State the null and alternative hypotheses for the test. Fill in the blank below.
H0 : a =3
H, :a _____ 3

Answers

The alternative hypothesis is that it is more than 3 grams.

H0: σ ≤ 3

Ha: σ > 3

The null hypothesis (H0) is typically a statement of no effect or no difference, while the alternative hypothesis (Ha) is a statement of the effect or difference that we are trying to detect.

In this case, the null hypothesis is that the standard deviation of the weights of the bags of potato chips is no more than 3 grams, while the alternative hypothesis is that it is more than 3 grams.

H0: σ ≤ 3

Ha: σ > 3

where σ is the population standard deviation.

Step 2 of 3: Determine the appropriate test statistic and critical value(s) for the test.

Since the sample size is greater than 30 and the population standard deviation is unknown, we can use a t-test with (n-1) degrees of freedom. The test statistic is:

t = (s / sqrt(n-1)) / (σ0 / sqrt(n-1))

where s is the sample standard deviation, n is the sample size, and σ0 is the null hypothesis value of the population standard deviation (which is 3 grams in this case).

Under the null hypothesis, the test statistic follows a t-distribution with (n-1) degrees of freedom. To find the critical value(s) for the test at the 0.025 level of significance with 20 degrees of freedom, we need to look up the t-value that has 0.025 probability in the upper tail of the t-distribution with 20 degrees of freedom:

tα = t(0.025,20) ≈ 2.093

Step 3 of 3: Calculate the test statistic and make a decision.

Plugging in the values from the problem, we get:

t =[tex]\frac{(\frac{4.1 }{\sqrt{(21-1)} } )}{\frac{3}{\sqrt{(21-1)} } }[/tex]  ≈ 3.16

The calculated t-value is greater than the critical value, which means that we reject the null hypothesis at the 0.025 level of significance.

In other words, the evidence supports the claim that the standard deviation of the weights of the bags of potato chips is more than 3 grams, and thus the bags do not pass inspection.

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3. What is the radius of the circle?

Answers

The value of radius of the circle is,

⇒ r = 7 units

Since, The circle is a closed two dimensional figure , in which the set of all points is equidistance from the center.

We have to given that;

A circle is shown in figure.

Now, We ca formulate the value of radius of the circle is,

⇒ r = 8 - 1

⇒ r = 7 units

Thus, The value of radius of the circle is,

⇒ r = 7 units

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What’s the length of x? Pls show working.

Answers

Answer:

[tex]x = 32.637075718 cm^2[/tex]

Step-by-step explanation:

[tex]cos(40\textdegree) = \frac{25}{x}\\\\x = 25/cos(40\textdegree)\\x = 32.637075718 cm^2[/tex]

If a function f(x) has n derivatives at x = a, then it has a "tangent polynomial" of degree n at x = a. This polynomial is called the Taylor polynomial of degree n at x = a, and denoted Pn(x). The Taylor polynomial is expressed in terms of powers of (x – a) as n
pn(x) = Σ f^(k) (a)/k! (x-a)^k
k=0 This polynomial has the special property that all the first n derivatives of Pn(x) match the first n derivatives of the function f at x = a. In other words, for 0 ≤k≤n: f^(k)(a) = pn^(k) (a). For example, if f(x) = 3x^2 + 2x + 2, n = 2 let's find the degree 2 Taylor polynomial p2(x) at a = -1. First calculate the desired derivatives at x = -1: • f(0)(-1) = __
• f(1)(-1) = __ • f(2)(-1) = __
Then apply the formula above to deduce that P2(x) = __

Answers

f(0)(-1) = 2

f(1)(-1) = 4

f(2)(-1) = 6

First, let's find the first three derivatives of f(x):

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

f'(x) = 6x + 2

f''(x) = 6

Now, we can use the formula for the degree 2 Taylor polynomial at x = a = -1:

p2(x) = f(a) + f'(a)(x-a) + f''(a)(x-a)^2/2

Plugging in a = -1 and the derivatives we found above, we get:

p2(x) = f(-1) + f'(-1)(x+1) + f''(-1)(x+1)^2/2

p2(x) = (3(-1)^2 + 2(-1) + 2) + (6(-1) + 2)(x+1) + 6(x+1)^2/2

p2(x) = 3 - 4(x+1) + 3(x+1)^2

Therefore, the degree 2 Taylor polynomial of f(x) at x = -1 is p2(x) = 3 - 4(x+1) + 3(x+1)^2.

To find the desired derivatives at x = -1:

f(0)(-1) = 2

f(1)(-1) = 4

f(2)(-1) = 6

Therefore, the degree 2 Taylor polynomial of f(x) at x = -1 is:

p2(x) = 3 - 4(x+1) + 3(x+1)^2

And the derivatives at x = -1 are:

f(0)(-1) = 2

f(1)(-1) = 4

f(2)(-1) = 6

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