What is necessary for sound to travel from a radio to your ears

Answer:

B

Step-by-step explanation:

For the lines to be parallel.

The 2 given angles are corresponding and congruent, that is

4x - 12 = 3x + 17 ( subtract 3x from both sides )

x - 12 = 17 ( add 12 to both sides )

x = 29 → B

The value of x will be 29°. Then the correct option is B.

If two lines are parallel, then the third line. The corresponding angles are equal angles.

We know that the angle (3x + 17) and (4x – 12) are corresponding angle.

(3x + 17) = (4x – 12)

4x – 3x = 17 + 12

          x = 29°

The value of x will be 29°.

Then the correct option is B.

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The value of P(10) is 0.11 to ensure that the given distribution is a valid probability distribution.

To determine the value of P(10) so that the given distribution is valid, we need to ensure that the sum of all the probabilities equals 1.

Given:

X: 5, 10, 20, 30, 40, 50

P(X): 0.13, P(10), 0.11, 0.14, 0.21, 0.3

We know that the sum of the probabilities should be equal to 1.

Sum of probabilities = 0.13 + P(10) + 0.11 + 0.14 + 0.21 + 0.3

To find the value of P(10), we can set up the equation:

0.13 + P(10) + 0.11 + 0.14 + 0.21 + 0.3 = 1

Simplifying the equation:

P(10) + 0.89 = 1

Subtracting 0.89 from both sides:

P(10) = 1 - 0.89

P(10) = 0.11

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The proportional relationship between the cost and the weight is c = 2.2w.

A proportional relationship is used to show the constant od proportionality between the variables.

One bag weighs 2.4 pounds and costs $5.28. The constant will be:

= 5.28/2.4

= 2.2

This can be expressed as c = 2.2w

where c = cost

w = weight

This shows the relationship.

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Answer:

AOB

Step-by-step explanation:

An obtuse angle is larger than 90 and less than 180

COB = 90

AOB is larger than COB and less than 180

The connection string for SQL Server using Windows Authentication is as follows:

Server=myServerAddress;Database=myDataBase;Trusted_Connection=True;

Specify the server address in the format "Server=myServerAddress". Replace "myServerAddress" with the name or IP address of the SQL Server instance you want to connect to.

Specify the name of the database you want to connect to in the format "Database=myDataBase". Replace "myDataBase" with the name of the database.

Use Windows Authentication by setting "Trusted_Connection=True". This means that the user running the application is authenticated using their Windows credentials, rather than a SQL Server login.

Use semicolons (;) to separate the different parts of the connection string.

Using Windows Authentication is a more secure and convenient way to connect to a SQL Server database, as it eliminates the need to store and manage login credentials in the application.

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The answer to the question "difference of -72 and a product of -720?" is -9.

To find the sum of the two numbers, we can set up the following equations based on the given information:

Let the two numbers be x and y, where x > y.

x - y = -72 (since the difference between the numbers is -72)

xy = -720 (since the product of the numbers is -720)

We can solve these equations simultaneously using algebraic methods. One way to do this is to isolate one of the variables in one of the equations and substitute it into the other equation. For example, we can isolate y in the first equation by rearranging it to y = x + 72, and then substitute this into the second equation:

x(x + 72) = -720

Expanding the left-hand side, we get:

x^2 + 72x = -720

Rearranging the equation, we get:

x^2 + 72x + 720 = 0

Now we can solve for x using the quadratic formula:

x = (-b ± √(b^2 - 4ac)) / (2a)

where a = 1, b = 72, and c = 720. Plugging in these values, we get:

x = (-72 ± √(72^2 - 4(1)(720))) / (2(1))

Simplifying further, we get:

x = (-72 ± √(5184 - 2880)) / 2

x = (-72 ± √2304) / 2

x = (-72 ± 48) / 2

Now we have two possible values for x:

x1 = (-72 + 48) / 2 = -12

x2 = (-72 - 48) / 2 = -60

Since x > y, we take x = -12 and y = -72 - (-12) = -60 + 12 = -48.

Thus, the sum of the two numbers is -9, which is obtained by adding x and y:

-12 + (-48) = -9.

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Answer: x <7

Step-by-step explanation:

x-3+2<6

x-1<6 u will move the constant to the right

x<6+1

x<7

That should be right I hope this help u out :)

Answer:

3.9%

Step-by-step explanation:

Percentage error

\( = \frac{7.7 - 7.4}{7.7} \times 100 \\ \\ = \frac{0.3}{7.7} \times 100 \\ \\ = \frac{300}{77} \\ \\ = 3.8961039 \\ \\ = 3.9 \% \)

Answer:

C

Step-by-step explanation:

The input is the value of x. Substitute x = 4 into y for output

y = 3(4)² - 2(4) + 5 = 3(16) - 8 + 5 = 48 - 8 + 5 = 45

Thus the output is 45 → C

The shaded region is made up of the area of a rectangle minus the areas of the semicircles. The semicircles have a diameter of 2 inches, so the radius of each semicircle is 1 inch.

The area of each semicircle can be found using the formula pir^2, where r is the radius. So the area of each semicircle is pi1^2 = pi square inches.

The area of the rectangle is found by multiplying the length by the width: 1 foot * 12 inches/feet = 12 square inches.

The shaded region is the area of the rectangle minus the area of the semicircles. So the area of the shaded region is 12 square inches - 2* pi square inches = 12 - 2* pi square inches.

It's important to note that the length of the shaded region is given in feet (1-foot) but the area of the semicircles and the rectangle is given in square inches.

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Answer: 6 i thank

Step-by-step explanation:

So three quarters is 1/3. So 1/3 of 18 is 6.

And the average size of an  Gecko is 18in

And  a Iguanas is 1/3 that of an Gecko

Hopefully that helps

Slope of lines 3x - 5y = 2 and 3x + 5y = -2 are m₁ = 3/5 and m₂ = -3/5 respectively.

The slope of a line is defined as the change in y-coordinate with respect to the change in x-coordinate of the line. The net change in the y coordinate is Δy and the net change in the x coordinate is Δx. Therefore, the change in y-coordinate for a change in x-coordinate can be written as

Line slope is a measure of the steepness or direction of a line in the coordinate plane.  

m = Δy/Δx

where,m is the slope

Given,

equations of the line

3x - 5y = 2

Moving 3x to RHS
-5y = -3x + 2

y = (3/5)x - 2/5

comparing with slope intercept equation of the line y = mx + c

slope m₁ = 3/5

Now, equation

3x + 5y = -2

moving 3x to RHS

5y = -3x - 2

y = (-3/5)x - 2

comparing with slope intercept equation of the line y = mx + c

slope m₂ = -3/5

Hence, m₁ = 3/5 and m₂ = -3/5 are slope of lines 3x - 5y = 2 and 3x + 5y = -2 respectively.

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Answer:

125.66

Step-by-step explanation:

Answer:X= 78

Step-by-step explanation:

Answer:

x = 31

y = 59

Step-by-step explanation:

90 - 59 = x

x = 31

31 + y = 90

90 - 31 = y

y = 59

Have a nice day!

Answer:

I believe this is the answer

V=5000(1•0.085)^x

Step-by-step explanation:

sorry if its incorrect i just wanted to help

"v = 5000 * (1-0.085)x" is the formula that is used to determine the car's worth.

An asset loses value over time as a result of use, damage, or obsolescence. Depreciation is the measurement of this decline. Depreciation, or a decline in asset value, can be brought on by a variety of other variables, such as bad market conditions, etc.

Given, You bought a car for $5,000. Each year it depreciates in value by 8.5%

In this case, we have the following formula:

v = C. (1 - r)ˣ

Where C is the original value of the car, r is the depreciation rate and x is the time in years

Equation to find the value = 5000 * (1- 0.085)ˣ

Therefore, the equation that helps in calculating the value of the car is

"v  = 5000 * (1- 0.085)ˣ".

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Answer:

ok so basically 21

Step-by-step explanation:

Reduce the expression, if possible, by cancelling the common factors.

Exact Form:

31 /150

Decimal Form: 0.206

The length of the rectangle is 7 cm and the width is 5 cm.

The whole distance covered by the rectangle's borders or its sides is known as its perimeter. As we know the rectangle will have 4 sides then the perimeter of the rectangle will be equal to the total of its four sides. And the unit will be in meters, centimeters, inches, feet, etc.        

The formula for the Perimeter of the rectangle is given by

Here we have

The length of a rectangle is 2cm greater than the width of the rectangle

And perimeter of the rectangle = 24 cm

Let x be the width of the rectangle

From the given data,

Length of the rectangle = (x + 2) cm  

As we know Perimeter of rectangle = 2(Length+width)

=> Perimeter of rectangle = 2(x+2 + x) = 2(2x +2)

From the given data,

Perimeter of rectangle =  24cm

=> 2(2x +2) = 24 cm

=> (2x +2) = 12     [ Divided by 2 into both sides ]

=>  2x = 12 - 2

=>  2x = 10

=>   x = 5         [ divided by 2 into both sides ]  

Length of rectangle, (x+2) = 5 + 2 = 7 cm

Therefore,

The length of the rectangle is 7 cm and the width is 5 cm.

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Step-by-step explanation:

x = 3y

or y = x/3

bottom line : there are three times as many x as there are y. or the number of y is 1/3 of x.

We are given the following equation in vector form:

To solve the equation we need to remember that two vectors are equal of the corresponding elements are equal. Therefore, we set equal the first elements:

Now, we divide both sides by 5:

Now, we set equal the second elements:

Now, we divide both sides by 5:

Therefore, "x = 3/5" and "y = 4".

Answer: 5/22x

Step-by-step explanation:

Answer:

8r + 15 = x

Step-by-step explanation:

So being that they can form 6 rows but have 3 left over we know that there are more than three chairs in each row. So for example:

6r + 3 = x

or (x = chairs, r = chairs in the row)

8r + 15 = x

If the marginal productivity of capital is high, then the rental rate of capital will be high, and vice versa.Therefore, in a competitive, profit-maximizing economy with constant returns to scale, the distribution of national income between labor and capital is determined by the marginal productivity of labor and capital.

In a competitive, profit-maximizing economy with constant returns to scale, the distribution of national income between labor and capital is determined by the marginal productivity of labor and capital.Let us understand the concept and terms mentioned in this problem.The distribution of national income between labor and capital is a key economic concept. This refers to the division of a country's total income between labor (workers) and capital (owners of businesses).In a competitive, profit-maximizing economy, firms aim to maximize their profits by producing goods or services that generate the highest returns at the lowest cost. This is achieved by using the factors of production such as labor and capital in the most efficient manner to produce goods and services.Constant returns to scale refer to a production function where output increases in direct proportion to an increase in all inputs. That is, if a firm doubles its inputs, it will also double its output.Marginal productivity is the additional output that is produced by adding one more unit of a factor of production while holding all other factors constant. In a perfectly competitive market, the wage rate is determined by the marginal productivity of labor. If the marginal productivity of labor is high, then the wage rate will be high, and vice versa. Similarly, in a perfectly competitive market, the rental rate of capital is determined by the marginal productivity of capital. If the marginal productivity of capital is high, then the rental rate of capital will be high, and vice versa.Therefore, in a competitive, profit-maximizing economy with constant returns to scale, the distribution of national income between labor and capital is determined by the marginal productivity of labor and capital.

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Perimeter of one triangle is 20.6 inches.

Perimeter is the length of the boundaries of a closed triangle.

if we add the 3 side lengths of a triangle then the perimeter is determined.

Jane wants to have a rectangular stained glasses that has length 7 inches and width 5 inch.

If she fuses together two triangles of colored glass for obtaining a rectangle, then each triangle will have 3 similar side length.

each triangle has first side length = 5 inches

                              second side length = 7 inches

                   other side length = hypotenuse of right-angled triangle

                       =√(5² + 7²) = √74 inches

A rectangle has four right angles and therefore, the triangles that are developed based on the rectangle must be right-angled.

perimeter of triangle = sum of three side length = (5 + 7+√74) = 20.6 inches

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Answer:

It is Option #1

Answer:

4 (x - 5)

4x - 20

Hope that helps!

-Sabrina

Step-by-step explanation:

Answer:

5

Step-by-step explanation:

49/9 = 5

To estimate the regression in the given model Yi = B0 + B1Xi + B2Ziui, where the variance of Ui is Σi^2 = Σ(zi^2), you can use the method of weighted least squares (WLS). The weights for each observation can be determined by the inverse of the variance of Ui, that is, wi = 1/zi^2.

In the given model, Yi = B0 + B1Xi + B2Ziui, the error term Ui is assumed to have a constant variance, given by Σi^2 = Σ(zi^2), where zi represents the individual values of Z.

To estimate the regression coefficients B0, B1, and B2, you can use the weighted least squares (WLS) method. WLS is an extension of the ordinary least squares (OLS) method that accounts for heteroscedasticity in the error term.

In WLS, you assign weights to each observation based on the inverse of its variance. In this case, the weight for each observation i would be wi = 1/zi^2, where zi^2 represents the variance of Ui for that particular observation.

By assigning higher weights to observations with smaller variance, WLS gives more importance to those observations that are more precise and have smaller errors. This weighting scheme helps in obtaining more efficient and unbiased estimates of the regression coefficients.

Once you have calculated the weights for each observation, you can use the WLS method to estimate the regression coefficients B0, B1, and B2 by minimizing the weighted sum of squared residuals. This involves finding the values of B0, B1, and B2 that minimize the expression Σ[wi * (Yi - B0 - B1Xi - B2Ziui)^2].

By using the weights derived from the inverse of the variance of Ui, WLS allows you to estimate the regression in the presence of heteroscedasticity, leading to more accurate and robust results.

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Answer: the answer is 19.6

Step-by-step explanation:

just add up by each number, for example 5.6+3 miles is 8.6 miles so just keep adding up the miles to get this answer