If the correlation between two variables is close to 1.0, can we conclude that the explanatory variable causes changes in the response variable even when the study is observational?

[ 61 ]

to solve this you need to use pythagorean theorem, and find the lengths of the sidesnof the triangle using two points.

x axis: 2 - ( -3 ) = 2 + 3 = 5

y axis: 2 - ( -4 ) = 2 + 4 = 6

PyTh: a^2 + b^2 = c^2

5^2 + 6^2 = c^2

25 + 36 = c^2

c = SqRt ( 61 )

Step-by-step explanation:

distinct ways !

STATICS and STATICS are 2 different ways to arrange them. have you noticed the difference ?

no, of course not. I only exchanged the 2 S. the same problem with the 2 T.

while they are different permutations, their arrangements are not distinctly different. to us observers they look the same.

so, for the 7 letters, 7! is not the full answer.

these 7! permutations include all the ones, where we only change the S and the T with each other.

we need to eliminate those. we do this by dividing by the S permutations (2! = 2) and the T permutations (again, 2! = 2).

so, the answer is

7! / (2×2) = 5040 / 4 = 1260

the 7 letters can be arranged in 1260 distinctly different ways.

y' = (y-3)(y+3)exp(y)

This differential equation has equilibrium solutions at y=0 and y=3, and y' is positive for -inf < y < 0 and 3 < y < inf and negative for 0 < y < 3.

1. Set y′ = 0 to get the equilibrium solutions

y′ = 0 → y = 0 and y = 3

2. Find the sign of y′

y′ = (y-3)(y+3)exp(y)

For y < 0, y′ is positive

For 0 < y < 3, y′ is negative

For y > 3, y′ is positive

This differential equation has two equilibrium solutions at y=0 and y=3, meaning the value of y does not change when the equation is applied.

To determine the sign of the equation, we can look at the equation y′ = (y-3)(y+3)exp(y). For y < 0, y′ is positive. This means that when y is less than 0, the equation increases in value. For 0 < y < 3, y′ is negative. This means that when y is in between 0 and 3, the equation decreases in value. And for y > 3, y′ is positive. This means that when y is more than 3, the equation increases in value.

Overall, the equation behaves as expected: it increases when y is less than 0 and more than 3, and decreases when y is between 0 and 3. This is what we would expect in order for the equation to have the equilibrium solutions at y=0 and y=3.

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Answer:

9x^2+4-12x+21x^2+x-10

30x^2-11x-6

Step-by-step explanation:

please make me as brainlest

No, there isn't a week when they have the exact same amount of money, however at week 7, Diego has $45 and Lin has $44.

The density functions of U1, U2 and U3 can be calculated as fU1(u) = 2(2 - (u+1)), 0 < u < 1, 0, elsewhere; fU2(u) = 4/u2, 0 < u < 1, 0, elsewhere; and fU3(u) = 2/√u, 0 < u < 1, 0, elsewhere.

The method of transformation is used to find the density functions of U1, U2 and U3 when given the probability density function of a random variable Y. The equation for the transformation of a random variable Y to U is U = g(Y), where g is a function of Y. To find the density functions of U1, U2 and U3, we need to first calculate the derivatives of U1, U2 and U3 with respect to Y, which are given by dU1/dY = 2, dU2/dY = -1/2 and dU3/dY = 2Y. Then, the density functions of U1, U2 and U3 can be calculated using the formula fU(u) = fY(g-1(u)) * |dg-1/du|, where fU(u) and fY(y) denote the density functions of U and Y, respectively, and g-1 is the inverse of g. For U1, U2 and U3, g-1(u) is y = (u+1)/2, y = 2/u and y = √u, respectively. Therefore, the density functions of U1, U2 and U3 can be calculated as fU1(u) = 2(2 - (u+1)), 0 < u < 1, 0, elsewhere; fU2(u) = 4/u2, 0 < u < 1, 0, elsewhere; and fU3(u) = 2/√u, 0 < u < 1, 0, elsewhere.

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Alisa should either fill out a new ticket or write the correct amount and append her signature beside it.

A deposit ticket is a little paper where you are required to fill in the details of the deposit that you seek to make into your savings account. All information in the ticket ought to be filled accurately.

here, we have,

The teller may have declined to receive the ticket due to incorrect total amount filled on the ticket. Alisa should either fill out a new ticket or write the correct amount and append her signature beside it.

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Answer:

y=40x+35

Step-by-step explanation:

After 0 months, she still needs to pay the first $35. This means that this is her y-intercept, and in the formula “y=mx+b”, it would go in the “b” place. Then x would mean how many months have passed, so therefore 40 would go into the “m” place. If you put that together, it looks like “y=40x+35”.

Methods for receiving the most recent hazardous weather information and current updates directly from your local Weather Forecast Office (WFO) include all  except C. NWSChat, phone calls, phone alerts

Simply put, a weather prediction is a scientific projection of the coming weather. The most important meteorological variables are used to express the state of the atmosphere at any particular time as the weather condition. Significant weather factors that are expected vary by location.

It is possible to predict the weather by employing technology and scientific understanding to make weather observations. This process is known as weather forecasting. In other words, it allows for the early prediction of events like cloud cover, rain, snow, wind speed, and temperature.

Therefore, option C is correct.

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Answer: C

Step-by-step explanation:

Again, let's use elimination.

Does it suggest a different interpretation than the rest of the article? Yes, because it indicates there is a flaw in saying that the data shows human and chimp similarities.

Is it a reason for pursuing DNA Research? Nope.

Does it specifiy the extent of similarity? Yup.

SO now we are down to A and C as possible choices.

C is the answer, because while the data can be used to produce a different interpretation, its purpose in developing the main idea is purely specification.

Please find attached the graph of the residual plot created with MS Excel

A residual plot is the plot of the vertical distances between the data points and the regression line.

The residuals can be obtained by the equation;

r = y - y₀

The residuals are calculated using the above formula for the residuals and presented in a tabular format as follows;

x    [tex]{}[/tex]    y              [tex]\hat{y}[/tex]                 r

10 [tex]{}[/tex]    4.472      4.73            0.258

24[tex]{}[/tex]    6.928      6.312         -0.616

53 [tex]{}[/tex]   10.296     9.589        -0.707

46  [tex]{}[/tex]  9.592      8.798        -0.794

5    [tex]{}[/tex]  3.162        4.165         1.003

78    [tex]{}[/tex]12.49        12.414        -0.076

100   [tex]{}[/tex]14.142      14.9            0.758

84 [tex]{}[/tex]   12.962      13.092       0.13

The residual plot can be graphed using the data points for the x-values, x, and the residuals, r, as follows;

x; 10         [tex]{}[/tex]       24        53        46              5              78        100            84

r; 0.258     [tex]{}[/tex]  -0.616    -0.707    -0.794      1.003     -0.076     0.758       0.13

Please find attached the graph of the residuals, the residual plot created with MS Excel

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Answer: x = 8, x = -2

Step-by-step explanation:

(x - 3)² = 25

Step 1: Take the square root on each side of the equation.

(x - 3)² = 25

√(x - 3)² = ±√25

Step 2: After taking the square root on each side of the equation, this allows you to solve for x.

x - 3 = ±5

Solution 1

x - 3 = 5

x = 5 + 3

x = 8

Solution 2

x - 3 = - 5

x = -5 + 3

x = -2

Another way to solve this problem is to multiply (x - 3)² using the FOIL methods (first, outer, inner, last) and then set it equal to 25.

(x - 3) (x - 3) = 25

x² - 3x - 3x + 9 = 25

The next step is to add like terms. After adding like terms, solve for x.

x² - 3x - 3x + 9 = 25

x² - 6x + 9 - 25 = 25 - 25

x² - 6x - 16 = 0

Last step is to factor x² - 6x - 16 = 0 so you can solve for the two solutions.

(x - 8) (x + 2) = 0

Solution 1

x - 8 = 0

x = 8

Solution 2

x + 2 = 0

x = -2

Insurance is a financial service that allows a: C. consumer to share liability with a company.

In Economics, an insurance company can be defined as a business organization (company or firm) that is established to collect premium from all of the insured for losses which may or may not occur, so they can easily use this cash to compensate or indemnify for losses (liabilities) incurred by those having high risk.

In this context, we can reasonably infer and logically deduce that an insurance simply refers to a financial service that is designed and developed to avail a consumer an opportunity or ability to share his or her liabilities with a business organization (company or firm).

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Answer:

C - consumer to share liability with a company.

Step-by-step explanation:

Edge 2023

Answer:

- 3 26/55

Step-by-step explanation:

The better buy is 10 tickets for $1.00.

Multiplication is a mathematical arithmetic operation. It is also a process of adding the same types of expression some number of times.

Example - 2 × 3 means 2 is added three times, or 3 is added 2 times.

Given:

Polk Elementary School was putting on its annual fall carnival.

The school was selling 10 tickets for $1.00 or 2 tickets for $0.254.

That means,

A). 10 tickets for $1.00 or

B).  2 tickets for $0.254.

So, 10 tickets for $1.3

Therefore, option A is a better choice.

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The given statement is true i.e. 4 € (3,4,5}.

What are Sets and Subsets?

A set is a mathematical representation of a group of diverse items. A set has elements or members, which can be any type of mathematical object, including numbers, symbols, lines, points in space, other geometric structures, variables, or even other sets.

When all the components of Set A are also present in Set B, Set A is said to be a subset of Set B. Alternatively said, Set B contains Set A.

Here, (3,4,5} has open ended bracket on 3 which implies it does not contain 3 .

Similarly, (3,4,5} has closed bracket on 5 which implies it contains 5.

Since, we have to check whether 4 belongs to the set or not,

4 belongs to the given set because it is a part of given set which is in the mid hence, we don't need to check bracket here.

Hence, 4 € (3,4,5} and the given statement is true.

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We have shown that for any eigenvalue λ of A, 1-λ is an eigenvalue of -A. So, the eigenvalues of -A are 1-λ1, 1-λ2, ..., 1-λn, where λ1, λ2, ..., λn are the eigenvalues of A.

Eigenvalues are scalar values that are associated with a linear transformation of a matrix and are used to represent the behavior of a linear system. They represent the factor by which a linear transformation scales the direction of a vector. Eigenvalues play an important role in many areas of mathematics, including linear algebra, physics, engineering, and statistics. If a matrix A has an eigenvector x and an eigenvalue λ, then A can be represented as a scalar multiplication of x by λ: A x = λ x. The eigenvalues of a matrix can be used to determine its stability, to find the diagonalization of the matrix, and to determine the eigenvectors that represent the most important directions of a linear transformation.

The eigenvalues of a matrix A are scalars that satisfy the equation Av = λv, where v is a non-zero eigenvector and λ is the corresponding eigenvalue. If λ is an eigenvalue of A, then 1-λ is an eigenvalue of -A.

To see why this is true, let's consider an eigenvector v of A with eigenvalue λ. Then, Av = λv. We can multiply both sides of this equation by -1 to obtain:

-Av = -λv

Now, we can substitute -A for A and 1-λ for λ:

(-A)v = (1-λ)v

Thus, we have shown that for any eigenvalue λ of A, 1-λ is an eigenvalue of -A. So, the eigenvalues of -A are 1-λ1, 1-λ2, ..., 1-λn, where λ1, λ2, ..., λn are the eigenvalues of A.

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There are 12 students that know all of the language .

Given : Total U = 80

Let A be the set of students  that know English

A = 50

Let A be the set of students  that know French

B = 55

Let A be the set of students  that know German

C =46

Since , 7 students know none of the language

Therefore , |A?B?C| = 7

Also ,

|A∩B| = 37

|B∩C| =28

|C∩A| = 25

Now ,

U - (A∪B∪C) = (A?B?C)

80 - (A∪B∪C) = 7

(A∪B∪C) = 73

Number of students that know all three languages

(A∪B∪C) = A + B + C - [(A∩B) + (B∩C) + (A∩C)] + (A∩B∩C)

73 = 50 + 55 + 46 - 37 -28 -25 + (A∩B∩C)

Therefore , (A∩B∩C) = 12

Hence , there are 12 students that know all of the language .

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A central angle in a circle measures 52 degrees. 13° is the measure of an inscribed angle that intercepts the same arc.

An arc's inscribed angle is the angle that it occupies at any given point on the circle. The angle created when two chords cross on a circle's interior is known as a "inscribed angle" in geometry. The angle formed at a specific location on the circle by two specified points on the circle can also be used to define it. Two chords of the circle that share an endpoint define an inscribed angle in the same way.

Half of the size of the central angle that corresponds with the intercepted arc makes up the size of an inscribed angle. An inscribed angle's measurement is equal to half of its intercepted arc's measurement.

Thus, central angle = 52°

so, intercepted arc = 26°

hence, inscribed angle = 13°

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Answer: 0.0208333333

Step-by-step explanation: one way you could do it is -->1/4 ≈ 0.25 and 1/12 ≈ 0.0833333333333333

so then

0.25 ÷ 0.0833333333333333 = 0.0208333333

If you'd like to check the answer, use a calculator.

1/4 ÷ 1/12 = 0.0208333333

hope this helps :)

The domains of the composite function (f/g)(4) and (f + g)(4) for f(x) = x² + 2x - 3 and g(x) = x² - 9 are equal to 3 and 28 respectively.

A function is composite when the co- domain of the first mapping is the domain of the second mapping

We shall evaluate the domains of the function (f/g)(4) and (f + g)(4) as follows:

(f/g) = (x² + 2x - 3)/(x² - 9)

by factorization of the right hand side;

(f/g) = (x - 1)(x + 3)/(x - 3)(x + 3)

(f/g) = (x - 1)/(x - 3)

(f/g)(4) = (4 - 1)/(4 - 3)

(f/g)(4) = 3

(f + g) = x² + 2x - 3 + x² - 9

(f + g) = 2x² + 2x - 12 {simplify like terms}

(f + g)(4) = 2(4)² + 2(4) - 12

(f + g)(4) = 28

Therefore, the domains of the composite function (f/g)(4) and (f + g)(4) for f(x) = x² + 2x - 3 and g(x) = x² - 9 are equal to 3 and 28 respectively.

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Answer: First one is -11

Second one is 0

Step-by-step explanation:

The completed entries is added as an attachment

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

3,723 ÷ 51

Express 3,723 as 2295 + 1428

So, we have the following representation

3,723 ÷ 51 = (2295 + 1428) ÷ 51

Expand the expression

So, we have the following representation

3,723 ÷ 51 = 2295 ÷ 51 + 1428 ÷ 51

Evaluate the quotients

3,723 ÷ 51 = 45 + 28

Next, we complete the blanks (see attachment) for the completed entries

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Answer:

y= -3+5

its the same thing

Step-by-step explanation:

The probability of drawing two blue cards is 0.09.

Probability refers to potential. A random event's occurrence is the subject of this area of mathematics.

The range of the value is 0 to 1. Mathematics has incorporated probability to forecast the likelihood of various events.

The degree to which something is likely to happen is basically what probability means.

given:

Green cards = 5

Blue card=3

Red card= 2

So, the probability of getting blue card at first time

= 3/ 10

Now, the probability of getting blue card at second time

= 3/10

Thus, the probability of drawing two blue cards

= 3/10 x 3/10

= 9/100

= 0.09

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Answer:

not possible

Step-by-step explanation:

it's not equal to zero, and the answer ends up with imaginary number

Correct Answer: c. ordinal scale

What is the ordinal scale?

An ordinal scale is a type of measurement scale in which the data can be ranked or ordered based on the size or value of the measurement. The categories in an ordinal scale, such as "excellent," "very good," "good," and "poor," do not have equal intervals or a true zero point, so they cannot be used to perform mathematical operations. The main purpose of an ordinal scale is to order or rank the data based on relative position.

In this case, the restaurant's rating scale is an example of an ordinal scale because the customers are asked to indicate the quality of service on a scale with four categories, and the categories can be ranked in order from best to worst.

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The order of the values from the least to the greatest is:

To order the values, it would be best to convert them to decimals or whole numbers to better see how they relate with each other.

The value of 8 tens means:

= 8 x 10

= 80

The value of 8 x 1 / 100 comes to :

= 8 x 1 / 100

= 8 / 100

= 0.08

The value of 0. 88 is already in decimals.

The largest number therefore, is 8 tens. Then 0. 88 follows as it is greater than 0. 08.

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Answer:

see below

Step-by-step explanation:

every year goes up 16%, so

250 * (1+16%)^8 = 819.6

A directed graph can be used to determine whether a relation R on a finite set A is asymmetric or not by checking whether there is any pair of elements (a, b) in R such that both (a, b) and (b, a) are present in R.

If such a pair exists, then the relation is not asymmetric because it violates the condition for asymmetry, which states that for any (a, b) in R, (b, a) cannot be in R.

In the directed graph, this means that there is a directed edge from a to b and also a directed edge from b to a. This would result in a cycle in the directed graph, which is not allowed in an asymmetric relation.

If there are no such pairs in R, then the relation is asymmetric, and the directed graph will not contain any cycles. Therefore, the directed graph can be a helpful tool to quickly determine if a relation is asymmetric or not, especially for larger sets A.