Please help!! this is due TODAY!

A. I only
B. II only
C. II and III only
D. I, II, and III

I do appreciate the help!

The correct equation for wave speed depends on the type of wave. For transverse waves, the equation is wave speed = frequency x wavelength, while for longitudinal waves, the equation is wave speed = (1/period) x wavelength.

The equation for wave speed depends on the nature of the wave. In the case of transverse waves, such as electromagnetic waves or waves on a string, the correct equation is wave speed = frequency x wavelength. Frequency refers to the number of complete oscillations or cycles of the wave per unit of time, typically measured in hertz (Hz). Wavelength represents the distance between two consecutive points in the wave that are in phase, such as the crest or trough of the wave. The product of frequency and wavelength gives the speed at which the wave propagates through the medium.

However, for longitudinal waves, such as sound waves, the correct equation is wave speed = (1/period) x wavelength. Period refers to the time it takes for one complete oscillation or cycle of the wave, and it is the reciprocal of frequency. The wave speed in longitudinal waves can be calculated by multiplying the wavelength by the inverse of the period.

Therefore, the correct equation for wave speed depends on whether the wave is transverse or longitudinal. For transverse waves, it is wave speed = frequency x wavelength, while for longitudinal waves, it is wave speed = (1/period) x wavelength.

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Step-by-step explanation:

when we have multiplications of fractions, we can simply "break" the multiplications apart, simplify every fraction, and then combine the results again.

-9/-15 = 3/5

x^-1/x⁵ = 1/x¹x⁵ = 1/x⁶

y^-9/y^-3 = y³/y⁹ = 1/y⁶

so, when we multiply the 3 fractions again, we get

3/(5x⁶y⁶)

which is the second answer option.

Answer:

sec 0 = 5/(2√6)

Step-by-step explanation:

sin 0 = -1/5

Fourth quadrant Cos positive Rest negative

cos²0 + sin²0 = 1

cos²0 = 1-sin²0

cos²0 = 1 - (1/5)²

cos²0 = 1- 1/25

cos²0 = 24/25

cos0 = ±(2√6)/5

quadrant IV cos is positive.

Therefore cos0 = (2√6)/5

Now, sec0 = 1/cos0

sec0 = 1/{(2√6)/5)}

sec0 = 5/(2√6)

.

Hope it helps

Complete question :

Suppose the average yearly salary of an individual whose final degree is a master's is $55 thousand less than twice that of an individual whose final degree is a bachelor's. Combined, two people with each of these educational attainments earn ?$116 thousand. Find the average yearly salary of an individual with each of these final degrees.

Answer:

Average salary of a bachelor's degree holder = $57,000

Average salary of a master's degree holder = $59,000

Step-by-step explanation:

Let:

Average salary of a bachelor's degree = b

Salary of a master's holder = 2b - 55000

Combined salary of both degrees :

b + (2b - 55000) = 116000

b + 2b - 55000 = 116000

3b = 116000 + 55000

3b = 171000

Divide both sides by 3

3b/3 = 171000/3

b = 57000

Hence,

Average salary of a bachelor's degree holder = $57,000

Average salary of a master's degree holder = 2(57000) - 55000 = 59,000

The required Matlab code to find the greatest common divisor of a number using the Euclidean algorithm is shown.

To find the greatest common divisor (GCD) of two numbers using the Euclidean algorithm in MATLAB, you can use the following code:

% Replace '12345678' with your actual student number

studentNumber = '12345678';

% Extract the first 4 digits as the first number

firstNumber = str2double(studentNumber(1:4));

% Extract the last 3 digits as the second number

secondNumber = str2double(studentNumber(end-2:end));

% Find the GCD using the Euclidean algorithm

gcdValue = gcd(firstNumber, secondNumber);

% Display the result

disp(['The GCD of ' num2str(firstNumber) ' and ' num2str(secondNumber) ' is ' num2str(gcdValue) '.']);

Make sure to replace '12345678' with your actual student number. The code extracts the first 4 digits as the first number and the last 3 digits as the second number using string indexing. Then, the gcd function in MATLAB is used to calculate the GCD of the two numbers. Finally, the result is displayed using the disp function.

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Answer:

when two inscribed angles in one circle both equal 75°, the two angles must intercept the same arc that measures 75°.

Step-by-step Explanation:

The relationship between an intercepted arc and an inscribed angle is given as:

the measure of the intercepted arc = twice the inscribed angle that intercepts it.

Also, by virtue of this, when two inscribed angles intercepts the same arc, both inscribed angles are said to be congruent. And the measure of both angles equal the measure of the arc they both intercept.

Therefore, if the measure of an arc, that is intercepted by 2 inscribed angles, is given as 75°, both inscribed angles equal 75° as well. Thus, each of the inscribed angles is half the measure of the intercepted arc.

Therefore, the statement that is true about inscribed angles is: "when two inscribed angles in one circle both equal 75°, the two angles must intercept the same arc that measures 75°."

Answer:

60 r 56

Step-by-step explanation:

a) The median would be larger than the mean because the life expectancy of some countries may be much lower than the others, thus affecting the mean.

b) The median should be reported as it is a better measure of central tendency, as it is not affected by outliers.

a) The median is expected to be larger than the mean because the life expectancy of some countries may be much lower than the others, thus affecting the mean. The mean is calculated by adding all the values together and dividing by the number of values, and if there are any values that are much lower or higher than the rest, this will affect the mean significantly. The median, however, is the midpoint of the values, so outliers have less of an influence on it.

b) The median should be reported as it is a better measure of central tendency, as it is not affected by outliers. The median is the midpoint of the values, which means that if there are any values that are much lower or higher than the rest, it will not affect the median as much as it does the mean. This makes the median more accurate in representing the life expectancy of countries, as it is not skewed by outliers. Furthermore, the median is generally more reliable when dealing with skewed distributions, which is often the case with life expectancy data.

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Answer:

14

Step-by-step explanation:

5x = 70

x = 14

Answer:

The answer is option 1.

Step-by-step explanation:

Given that total angles in a quadrilateral is 360°. So in order to find x, you have to substract the remaining angles from 360° :

\(5x + 110 + 110 + 70 = 360\)

\(5x + 290 = 360\)

\(5x = 360 - 290\)

\(5x = 70\)

\(x = 70 \div 5\)

\(x = 14\)

To carpet the rectangular floor, it will cost $1,137.6. The result if obtained by multiplying the area of the carpet by the cost per square yard.

To calculate the cost of a product, multiply the product price for one item by the quantity.

We have a rectangular floor with a dimension of 27 feet by 24 feet. The carpet cost is $15.8 per square yard. Find the total cost to carpet it!

Let's change the unit of length.

The area of the carpet is

A = 9 yard × 8 yard

A = 72 square yard

The total cost is

C = A × price/square yard

C = 72 × $15.8

C = $1,137.6

Hence, the total cost to carpet the floor is $1,137.6.

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It will take the Stand family approximately 29.17 hours to reach Disneyland, including the breaks taken every two hours.

The total time taken can be calculated as:

Here, distance = 860 miles, speed = 60 mph, and breaks are taken every two hours, which means 430 miles of driving before each break.

So, the equation becomes:

Simplifying the equation, we get:

Therefore, it will take the Stand family approximately 29.17 hours to reach Disneyland, including the breaks taken every two hours.

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2x +12=-4

2x= -4-12

2x=-16

x=-16/2

x= -8

Step-by-step explanation:

2x+12=-4

2x=-4-12

x=-16/2

x=-8

hope this helps you

have a good day.

Answer:

Step-by-step explanation:

To determine how many roots the function f(x) = x² - 4x - 5 has in common with another function, we need the equation of the other function. Without that information, we cannot determine the number of common roots. Please provide the equation of the other function, and I will be able to assist you further.

Hope this answer your question

Please rate the answer and

mark me ask Brainliest it helps a lot

The decimal fraction that represents the given fraction is: 0.36.

To convert the figure from the given form to the decimal fraction, you can choose to use the long division format or simply divide it with the common factors. Between, 9 and 25, there is no common factor, so the best method to use here will be long division. Thus, we can proceed as follows:

1. 25 divided by 9

This cannot go so, we put a zero and a decimal point as follows: 0.

Then we add 0 to 90

2. Now, 25 divided by 90 gives 3 remainders 15. We add 3 to the decimal: 0.3

3. 90 minus 75 is 15. we add a 0 to this and divide 150 by 25 to get 6. This is added to the decimal to give a final result of 0.36.

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Answer:

Probability of Zach wearing a solid shirt, blue pants, and a bow tie is 1/12.

Step-by-step explanation:

The probability of Zach wearing a solid shirt, blue pants, and a bow tie is equal to the product of the probabilities of each event happening independently.

The probability of Zach wearing a solid shirt is 1/3, since he has 3 shirts and only one of them is solid.

The probability of him wearing blue pants is 1/2, since he has 2 pairs of pants and only one of them is blue.

The probability of him wearing a bow tie is 1/2, since he has 2 ties and only one of them is a bow tie.

Therefore, the probability of Zach wearing a solid shirt, blue pants, and a bow tie is:

P(solid shirt) * P(blue pants) * P(bow tie) = 1/3 * 1/2 * 1/2 = 1/12

So the probability of Zach wearing a solid shirt, blue pants, and a bow tie is 1/12.

Answer:

Feature 1- Statement A, Feature 2-Statement 2, Feature 3- Statement 1

\(2 {x}^{2} - 3x - 5\) ✅

Step-by-step explanation:

\(( {x}^{2} + 3) - [3x + (8 - {x}^{2} )] \\ = {x}^{2} +3 - [3x + 8 - {x}^{2} ] \\ = {x}^{2} + 3 - 3x - 8 + {x}^{2} \\ = 2 {x}^{2} - 3x - 5\)

\(\large\mathfrak{{\pmb{\underline{\orange{Happy\:learning }}{\orange{!}}}}}\)

Answer:

x = +3 and -3

Step-by-step explanation:

Start by solving for |x| as normal:

4 - |x| = 1

- |x| = -3 (subtract 4 from both sides)

|x| = 3 (multiply both sides by -1)

the absolute value of x means it will be positive, so you need to recognize that whatever is in the absolute value bars will be made positive.

this means that x = 3 AND -3, because both |3| and |-3| = 3

check your answer by plugging x = 3 and x = -3 back in:

4 - |3| = 1

4 - 3 = 1

1 = 1

and

4 - |-3| = 1

4 - 3 =  1

1 = 1

Answer: 3 and -3

Step-by-step explanation:

Here's why: normally if this were a normal equation the answer would be -3. But the absolute value sign changes something making it 3 because of the absolute value and -3 because of the original equation answer without the absolute value symbol.

Given:

\(7-2y>3y+13\)

To find:

The whether the value \(y=-1\) is a solution of the given inequality or not.

Solution:

We have,

\(7-2y>3y+13\)

It can be rewritten as

\(-2y-3y>13-7\)

\(-5y>6\)

Divide both sides by -5 and change the inequality sign.

\(y<\dfrac{6}{-5}\)

\(y<-1.2\)

All the value of y less -1.2 are the solutions of the given inequality but -1 is greater than -1.2.

\(-1>-1.2\)

Therefore, \(y=-1\) is not a solution of the given inequality.

The point is located (d) outside the target in relation to the target

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

This means that we substitute (-1,-6) for x and y in the circle equation = (x + 5)² + (y + 5)² = 16.

So, we have the following representation

(x + 5)² + (y + 5)² = 16.

Substitute the known values in the above equation, so, we have the following representation

(-1 + 5)² + (-6 + 5)² = 16.

Evaluate the sum

(4)² + (-1)² = 16.

Evaluate the exponent

16 + 1 = 16.

Evaluate the sum

17 = 16

17 is greater than 16

Hence, the point is not in the target

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Hence, 15 people out of 3 people can be chosen in 35 ways.

It is given that:

The total number of people in a race, n = 15

The number of finalists, r = 3.

Hence, the number of ways in which 3 people out of the 15 people can be finishers are:

\(^{15}C_{3} }\) = \(\frac{15!}{(15-3)!3!}\) = \(\frac{15!}{12!3!}\) = 35.

Hence, 15 people out of 3 people can be chosen in 35 ways.

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The confidence interval to find the margin of error and the sample mean:

(0.256,0.380) The sample mean is the average value obtained from the sample data.

To find the margin of error and the sample mean, we need more information.

The confidence interval (0.256, 0.380) provides the range of possible values for the true population mean.

However, without knowing the sample size or the level of confidence associated with the interval, we cannot calculate the margin of error or the sample mean.

The margin of error is typically calculated by multiplying the standard error by the appropriate critical value, based on the desired level of confidence. The sample mean is the average value obtained from the sample data.

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Answer for this linear differential equation is y(x) = (lnx + 1/x) / 4 + 7/4 × x^-2.

Given first order linear differential equation xy ′+2y=x 2−x+1, x>0, with initial value y(1)= 21​. Let's use the integrating factor method to solve the given differential equation. First, we need to convert the given differential equation into the standard form of a first order linear differential equation:

y ′+P(x)y=Q(x)

Divide both sides of given differential equation by x, we get:

y′+2y/x = x − 1/x + 1/x

Now, we have P(x) = 2/x and Q(x) = (x − 1)/x + 1/xSo, the standard form of the given differential equation is:

y′+ 2y/x = (x − 1)/x + 1/x

Now, we need to find the integrating factor (I.F) = e∫ P(x) dxI.F = e∫ 2/x dxI.F = e²ln|x|I.F = e^(ln|x|²)I. F = x²Therefore, multiply the given differential equation by I.F x²:

xy′(x²) + 2xy(x²)/x = (x − 1)/x (x²) + 1/x (x²)

Simplify xy′x² + 2y = x(x − 1) + x. Integrating factor x² on both sides, we have:

x² y′+2x y=x³ − x² + x⁴/4 + Cx⁴/4

Here, C = y(1)/x¹ = (2/1) / (1) = 2. Therefore, C = 2. Put x = 1 and y = 2 in the above equation. x² y′+2x y=x³ − x² + x⁴/4 + Cx⁴/4x² (y′ + 2y) = 2x² + 1/4x⁴ − x³ + x² + 2x²x² (y′ + 2y) = 3x² + 1/4x⁴y′ + 2y = 3/x² + 1/4x²y′ + 2y = (4x² + 1)/4x². This is the required differential equation. Solve it by using the method of integrating factor as: Apply integrating factor:Multiplying factor:

e^(2lnx) = e^(lnx²) = x²y(x²) = 1/4 ∫ (4x³ + x²)/x⁴ dxy(x²) = 1/4 ∫ (4/x + 1/x²) dxy(x²) = (lnx + 1/x) / 4 + C'

Now, apply initial condition y(1) = 2:

2 = (ln1 + 1) / 4 + C'C' = 2 - 1/4C' = 7/4

Thus, the solution of the given differential equation is: y(x) = (lnx + 1/x) / 4 + 7/4 × x^-2.

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Answer: Winston should invest $75,000 in the high-risk fund and $525,000 in the low-risk fund to achieve his retirement income goal.

Step-by-step explanation:

Let x be the amount of money invested in the high-risk fund, and y be the amount of money invested in the low-risk fund. We know that x + y = $600,000, since that is the total amount Winston plans to invest.

We also know that the high-risk investments should return 12% per year, and the low-risk investments should return 4% per year. Therefore, the total return on his investment will be:

0.12x + 0.04y

Winston wants a supplemental income of $30,000 per year. We can set up an equation for this as well:

0.12x + 0.04y = $30,000

We can use the equation x + y = $600,000 to solve for one of the variables in terms of the other. For example, we can solve for y as follows:

y = $600,000 - x

Substituting this expression for y into the equation for the total return, we get:

0.12x + 0.04($600,000 - x) = $30,000

Simplifying and solving for x, we get:

0.12x + $24,000 - 0.04x = $30,000

0.08x = $6,000

x = $75,000

Winston should invest $75,000 in the high-risk fund and $525,000 in the low-risk fund to achieve his retirement income goal.

Answer in decimal form = -0.2

Answer as a fraction = -1/5

=========================================================

Explanation:

The term "rate of change" is the same as "slope" for linear equations.

Use the slope formula to get the steps shown below.

\((x_1, y_1) = (-3, 3.6) \text{ and } (x_2, y_2) = (5, 2)\\\\m = \frac{y_2 - y_1}{x_2 - x_1}\\\\m = \frac{2-3.6}{5-(-3)}\\\\m = \frac{2-3.6}{5+3}\\\\m = \frac{-1.6}{8}\\\\m = \frac{-16}{80}\\\\m = -\frac{1}{5}\\\\m = -0.2\\\\\)

The decimal value is exact without any rounding done to it.

A slope of -1/5 means we go down 1 unit and to the right 5 units.

slope = rise/run = -1/5

rise = -1 = go down 1

run = 5 = go to the right 5

The complete question is

"Find the general solution of the given differential equation

y''-y=0, y1(t)=e^t , y2(t)=cosht

The function \(y(t)=e^t\)  is the solution of the given differential equation.

The function y(t)=cosht is the solution of given differential equation.

The function is a type of relation, or rule, that maps one input to specific single output.

Given;

\(y_1(t) = e^t\)

Given differential equations are,

y''-y = 0

 So that,  

\(y' (t) = e^t, y'' (t) = e^t\)

Substitute values in the given differential equation.

\(e^t -e^t=0\)

Therefore, the function \(y(t)=e^t\)  is the solution of the given differential equation.

Another function;

\(y(t)=cosht\)  

So that,  

\(y"(t)=sinht\\\\y"(t)=cosht\)

Hence, function y(t)=cosht is solution of given differential equation.

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