16.5 ft tall giraffe casts a 12-ft. shadow. at the same time a zookeeper casts a 4-ft shadow how tall in feet is the zookeeper

We can now use synthetic division or polynomial long division to check which of these values are actually zeros of the polynomial.

To use the rational zero theorem, we need to find all possible rational zeros of the polynomial m(x) = 3x^3 - x^2 - 39x + 13. These are of the form p/q, where p is a factor of the constant term (13 in this case) and q is a factor of the leading coefficient (3 in this case).

The factors of 13 are ±1 and ±13, and the factors of 3 are ±1 and ±3. So the possible rational zeros are:

±1/3, ±1, ±13/3, ±13

We can now use synthetic division or polynomial long division to check which of these values are actually zeros of the polynomial.

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The equation of the tangent is simply x = sin(9t) cos(t).

To find the equation of the tangent to the curve at the point corresponding to the given value of the parameter, we first need to find the derivative of y with respect to x.

dy/dx = (dy/dt)/(dx/dt)

= (-9sin(9t)sin(t) - cos(t)cos(9t)) / (9cos(9t)cos(t) - sin(9t)sin(t))

= -9tan(t) - cot(9t)

Now, we can find the slope of the tangent at the given point by substituting the value of t:

slope = -9tan(t) - cot(9t)

slope at t =

= -9tan() - cot()

= -9(0) - cot(0)

= -∞

This means that the tangent is vertical at the point corresponding to the given value of the parameter.

Therefore, the equation of the tangent is simply x = sin(9t) cos(t).

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Answer: Brenna will install 525 patio stones in 7 hours

Step-by-step explanation:

If it takes 3 hours to install 225 stones then

225/3=75

this means she installs 75 stones per hour. So,

525/75=7

So Brenna will install 525 patio stones in 7 hours.

Answer:

%556

Step-by-step explanation:

278 times 2 cuz its 50 percent off

Answer:

$556

Step-by-step explanation:

There was a 50% sale, so the original price has to be double the sale price.

$278 x 2 = 556

So, the original price is $556

The new mean is 281.

What is mean?

In mathematics, particularly in statistics, there are many different mean types. Each mean aids in the summary of a particular set of data, frequently serving to assess the overall importance of a given data set. The three different varieties of Pythagorean means are the arithmetic mean, geometric mean, and harmonic mean.

Here, we have

Given: You are given the following set of data. Its mean is 306.

250, 295, 315, 325, 345

If 25 is subtracted from each value, then we have to find the new mean.

Here, the number of elements is 5.

If 25 is subtracted from each value, the new mean can be evaluated as below,

New mean = (Old mean × 5 - 25 × 5)/5

⇒ (306 × 5 - 25 × 5)/5

= (1530 - 125)/5

= 281

Hence, the new mean is 281.

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T/F Solution that can be analytically obtained but is not an actual answer to the equation often due to restrictions in the type of function such as a negative in the log

This statement is true.

Because, Sometimes, when solving an equation using analytical methods, we may arrive at a solution that is mathematically correct but is not a valid answer due to the restrictions in the type of function used.

For example, if a negative value appears in the logarithmic function, the solution may not be valid because the logarithmic function is only defined for positive values.

In such cases, we need to go back and recheck our work and take into account the restrictions of the function to arrive at a valid solution.

Sometimes when solving an equation analytically, the resulting solution may not be a valid answer due to restrictions in the domain of the function.

For example, if we solve an equation involving a logarithmic function, we may end up with a negative value inside the logarithm, which is not defined for real numbers. In such cases, the solution obtained analytically is not a valid answer to the equation.

Another example is when solving for the roots of a quadratic equation using the quadratic formula, we may obtain complex solutions even though we are only interested in real solutions.

Thus, it is important to always check the solutions obtained to ensure that they satisfy any domain or range restrictions of the functions involved in the equation.

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The number of total parts in the ratio, given the ratio the line is divided into is a total of 7 parts .

When a line is divided in the ratio 3 : 4 , it means that the line is divided into 3 parts and 4 parts. The total number of parts is 3 + 4 = 7.

For example, if a line segment is 7 units long, then the part that is in the ratio of 3 : 4 would be 3 / 7 of the line segment and the other part would be 4 / 7 of the line segment.

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Full question is:

A line is divided in the ratio 3/4. How many total parts in the ratio?

To find the surface area obtained by rotating the curve y=cosh(x/a) about the x-axis, we can use the formula:

Surface Area = 2π ∫a^b y√(1+(dy/dx)^2) dx

where a and b are the limits of integration, and dy/dx is the derivative of y with respect to x.

In this case, since we are rotating the curve about the x-axis, the formula becomes:

Surface Area = 2π ∫a^b y√(1+(dx/dy)^2) dy

where dx/dy is the derivative of x with respect to y.

To find the derivative of x with respect to y, we can use the inverse function of y=cosh(x/a), which is x=a*cosh^-1(y). Taking the derivative of this with respect to y gives:

dx/dy = a/sqrt(y^2-1)

Substituting this into the formula for surface area, we get:

Surface Area = 2π ∫a^b cosh(x/a)√(1+(a/sqrt(y^2-1))^2) dy

Simplifying the expression inside the square root, we get:

Surface Area = 2π ∫a^b cosh(x/a)√(1+a^2/(y^2-1)) dy

To evaluate this integral, we can make the substitution u^2=y^2-1, which gives:

Surface Area = 2π ∫√(a^2+u^2) cosh(x/a) du

This integral can be evaluated using trigonometric substitution or integration by parts, but the resulting expression is quite complicated. Therefore, we cannot give a simple formula for the surface area in terms of a and b.

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construct concrete relations r, s, t, and u with the specified properties as mentioned below

1) Relation r is not a function:
A concrete relation r that is not a function could have both elements in A related to both elements in B.

For example:
r = {(3, a), (3, b), (4, a), (4, b)}

2) Relation s is a function, but not a function from A to B:
A concrete relation s that is a function but not a function from A to B could include only one element from A.

For example:
s = {(3, a), (4, a)}

3) Relation t is a function from A to B with Rng(t) = B:
A concrete relation t that is a function from A to B with a range equal to B could include one unique element from A related to each unique element in B.

For example:
t = {(3, a), (4, b)}

4) Relation u is a function from A to B with Rng(u) ≠ B:
A concrete relation u that is a function from A to B with a range not equal to B could include both elements from A related to the same element in B.

For example:
u = {(3, a), (4, a)}

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The type of sampling used in this example is B) Cluster sampling.

In this case, an education researcher randomly selects 38 schools from one school district and interviews all the teachers at each of the 38 schools.
Cluster sampling involves dividing the population into separate groups, or clusters, and then randomly selecting entire clusters to be included in the sample. In this case, the schools are the clusters, and the researcher has randomly chosen 38 of them to interview all the teachers within those schools.

The type of sampling used in this example is B) Cluster sampling.

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While there is a positive correlation between clouds and rain, this does not necessarily mean that one variable causes the other.

Correlation is a statistical measure that describes the strength and direction of a relationship between two variables.

The relationship "the more clouds there are, the more rain will fall" is a positive correlation. Positive correlation means that as one variable increases, the other variable also increases.

However, it's important to note that correlation does not imply causation. In this case, the relationship between clouds and rain is not necessarily causal. While it is true that more clouds can lead to more rain, there are also other factors that can influence rainfall, such as temperature, humidity, and wind patterns.

Additionally, it is possible that rain could cause more clouds to form, rather than the other way around.

Therefore, while there is a positive correlation between clouds and rain, this does not necessarily mean that one variable causes the other.

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The volume of the parallelepiped is approximately 130.12 cubic units.

To create the parallelepiped, we need to find the vectors PiP3 and PiP5.

PiP3 = P3 - Pi = (5,1,0) - (0,0,0) = (5,1,0)

PiP5 = P5 - Pi = (1,0,5) - (0,0,0) = (1,0,5)

We can use the cross product of these two vectors to find the area of the base:

PiP3 x PiP5 = (5,1,0) x (1,0,5) = (-5,-25,1)

The magnitude of this cross product gives us the area of the base:

|PiP3 x PiP5| = √(5² + 25² + 1²) = √651

To find the volume of the parallelepiped, we need to multiply the area of the base by the height, which is the length of the PiP5 vector:

Volume = |PiP3 x PiP5| × |PiP5| = √651 × √26 = √16926 ≈ 130.12

Therefore, the volume of the parallelepiped is approximately 130.12 cubic units.

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The measure of the angles and arcs are OLN = 220 deg, OL = 110 degrees deg

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

LMN = 110 degrees

This means that

LN = 110 degrees i.e. angle subtended by the arc equals angle at the center

This also means that

OLN = LMN + LMO

Where LMN = LMO

So, we have

OLN = 110 + 110

OLN = 220

Lastly, we have

OL = LMO

This gives

OL = 110 degrees

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Answer

OLN is 220 degrees and OL is 110 degrees :D please mark as brainliest bye have a great day

Step-by-step explanation:

[tex]|c|^2 + |c'|^2 = 1[/tex]

This is the condition that the complex constants c and c' must satisfy in order for the wave function to be normalized.

To normalize the given wave function, we need to ensure that the total probability of finding the particle in the box is equal to one. Mathematically, this means that the integral of the absolute square of the wave function over the entire box must be equal to one.

The normalized wave function is given by:

Ψ_norm(x) = AΨ(x) = A[cΨn(x) + c'Ψn'(x)]

where A is a normalization constant.

To find the value of A, we use the orthogonality property of the stationary states Ψn(x) and Ψn'(x) of the particle in a box. The property states that:

∫Ψn(x)Ψn'(x) dx = 0 (for n ≠ n')

Using this property, we can calculate the value of A as follows:

1 = ∫|Ψ_norm(x)|² dx

= A²[|c|²∫|Ψn(x)|² dx + |c'|²∫|Ψn'(x)|² dx + cc'∫Ψn(x)Ψn'(x) dx + cc'∫Ψn'(x)Ψn(x) dx]

= A²[|c|² + |c'|² + 2Re(c*c'∫Ψn(x)Ψn'(x) dx)]

= A²[|c|² + |c'|²] (as ∫Ψn(x)Ψn'(x) dx = 0)

Therefore, the normalization constant is:

A = [(|c|² + |c'|²)][tex]^{(-1/2)[/tex]

This means that the complex constants c and c' must satisfy the condition:

|c|² + |c'|² = 1

Interpretation:

The above result means that for the wave function Ψ(x) to be normalized, the complex constants c and c' must satisfy the condition that the sum of the absolute squares of their magnitudes is equal to one. This is a manifestation of the conservation of probability in quantum mechanics. It ensures that the total probability of finding the particle in the box is always equal to one, irrespective of the state of the particle described by the wave function.

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This is the condition that the complex constants c and c' must satisfy in order for the wave function to be normalized. So |c|² + |c'|² + 2Re(c*c') = 1

To obtain this result, we first use the orthogonality of the stationary states Ψn(x) and Ψn'(x), which means that

Then, we normalize the superposition wave function by requiring that

Expanding this expression and using the orthogonality relation, we obtain the above normalization condition.

This result shows that the complex constants c and c' must satisfy a certain constraint in order for the wave function to be normalized. This means that the probability of finding the particle in the box must be equal to 1, which is a fundamental requirement of quantum mechanics. The result also shows that the interference between the two stationary states Ψn(x) and Ψn'(x) is characterized by the phase difference between the complex constants c and c'.

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A bond with higher convexity will experience a greater price increase when interest rates decrease and a smaller price decrease when interest rates increase compared to a bond with lower convexity.

Convexity is a measure of the sensitivity of bond prices to changes in interest rates
Therefore, if Bond A has greater convexity than Bond B and all other factors are equal, Bond A would be preferred because it would provide greater price appreciation in a falling interest rate environment and less price depreciation in a rising interest rate environment compared to Bond B.

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This function returns a list of all numbers with n digits where the digit to the right is greater than the left digit. For example, generate_numbers(3) returns the list ['123', '124', '125', ..., '789'].

To generate all numbers with a number of digits equal to n, where the digit to the right is greater than the left digit, we can use a recursive approach. We can start by generating all possible numbers with one digit less than n and add a digit to the right that is greater than the last digit.

For example, if n=3, we can start with all possible numbers with two digits: 12, 13, 14, ..., 89. Then, for each of these numbers, we can add a digit to the right that is greater than the last digit, so we get:

123, 124, 125, ..., 129
134, 135, 136, ..., 139
145, 146, 147, ..., 149
...
789

We can implement this recursively by defining a function that takes two parameters: n, the number of digits, and last_digit, the last digit of the number generated so far. The function can start by generating all possible numbers with one digit less than n and passing the last digit as the second parameter. Then, for each of these numbers, it can add a digit to the right that is greater than the last_digit and call itself recursively with n-1 and the new last digit.

Here is a Python code example:

def generate_numbers(n, last_digit=0):
   if n == 0:
       return []
   if n == 1:
       return [str(digit) for digit in range(last_digit+1, 10)]
   numbers = []
   for digit in range(last_digit+1, 10):
       numbers.extend([str(digit) + number for number in generate_numbers(n-1, digit)])
   return numbers

This function returns a list of all numbers with n digits where the digit to the right is greater than the left digit. For example, generate_numbers(3) returns the list ['123', '124', '125', ..., '789'].

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To derive the Maclaurin series for the function f(x) = sin(x)/x dx, we can use the Maclaurin series for sin(x), which is:

sin(x) = x - x^3/3! + x^5/5! - x^7/7! + ...

We can then divide both sides by x to get:

sin(x)/x = 1 - x^2/3! + x^4/5! - x^6/7! + ...

This is the Maclaurin series for f(x). To find the first 4 nonzero terms, we can simply truncate the series after the x^4/5! term, since the subsequent terms involve higher powers of x:

f(x) = sin(x)/x = 1 - x^2/3! + x^4/5! - ...

So the Taylor polynomial with 4 nonzero terms is:

P4(x) = 1 - x^2/3! + x^4/5!

I hope this helps! Let me know if you have any further questions.
To derive the Maclaurin series for the function f(x) = sin(x)/x, we'll first recall the Maclaurin series for sin(x), which is:

sin(x) = x - (x^3)/6 + (x^5)/120 - ...

Now, we'll divide this series by x:

f(x) = sin(x)/x = (x - (x^3)/6 + (x^5)/120 - ...)/x

Dividing each term by x, we get:

f(x) = 1 - (x^2)/6 + (x^4)/120 - ...

Now, the Taylor polynomial with 4 nonzero terms can be written as:

f(x) ≈ 1 - (x^2)/6 + (x^4)/120

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The correct answer is C. A 95% confidence interval for μ will exclude the value 1.

A P-value of 0.072 means that if the null hypothesis (H0: μ = 1) is true, there is a 7.2% chance of obtaining a sample mean that is as extreme or more extreme than the one observed in the sample. This is not strong evidence against the null hypothesis at the 5% significance level (which is the standard level of significance used in hypothesis testing).

However, if we construct a 95% confidence interval for μ, we would expect the true population mean to fall within this interval 95% of the time if we were to repeat this study many times. Since the P-value is not less than 0.05, we fail to reject the null hypothesis at the 5% significance level.

Therefore, we can conclude that there is not enough evidence to suggest that the population mean is significantly different from 1.

However, a 95% confidence interval for μ will exclude the value 1, which means that we can be 95% confident that the true population mean is not equal to 1.

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The estimated probability of seeing at most two four of a kinds in 10,000 poker hands is approximately 0.987, using the Poisson approximation.

Let p be the probability of getting a four of a kind in a single hand. To find p, we need to count the number of ways to choose the four of a kind and the fifth card from a deck of 52 cards, and divide by the total number of ways to choose 5 cards from the deck:

p = (13 * C(4,1) * C(48,1)) / C(52,5) ≈ 0.000240096

where C(n,k) is the number of combinations of k items from a set of n items.

Now, let X be the number of four of a kinds in 10,000 hands. X follows a binomial distribution with parameters n = 10,000 and p = 0.000240096. We want to find P(X ≤ 2).

Using the Poisson approximation, we can approximate X with a Poisson distribution with parameter λ = np = 2.40096. Then,

P(X ≤ 2) ≈ P(Y ≤ 2)

where Y is a Poisson random variable with parameter λ = 2.40096. Using the Poisson distribution formula, we get:

P(Y ≤ 2) = e^(-λ) * (λ^0/0! + λ^1/1! + λ^2/2!) ≈ 0.987

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Therefore, the slope of the line passing through the origin which forms an angle of [tex]4\pi /7[/tex] with the positive x-axis is 0.

To find the slope of the line passing through the origin which forms an angle of [tex]4\pi /7[/tex]with the positive x-axis, we need to use trigonometry. The slope of a line is defined as the ratio of the change in y-coordinates to the change in x-coordinates, or rise over run.

Since the line passes through the origin, its y-intercept is zero. This means that we only need to find the x-intercept to determine the slope. We can use the angle formed by the line with the positive x-axis to find the x-intercept.

Let's call the angle formed by the line with the positive x-axis θ. Since the line passes through the origin, we can also say that it passes through the point (0,0). Using trigonometry, we can find the x-coordinate of the point where the line intersects the x-axis:

θ = [tex]4\pi /7[/tex]

cos θ = a/h = x/1

x = cos θ

In this case, θ = [tex]4\pi /7[/tex] so:
[tex]x = 2cos(4\pi /7)[/tex]

Now we can calculate the slope:

slope = rise/run = y-coordinate/x-coordinate = y/x

Since the line passes through the origin, the y-coordinate at the x-intercept is also zero. This means that the slope is simply:

slope = 0/x = [tex]0/cos(4\pi /7)[/tex]= 0

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Answer:

y = 2x + 4

Step-by-step explanation:

The equation is y = mx + b

m = the slope

b = y-intercept

Slope = rise/run or (y2 - y1) / (x2 - x1)

Pick 2 points (-2,0) (0,4)

We see the y increase by 4 and the x increase by 2, so the slope is

m = 4/2 = 2

Y-intercept is located at (0,4)

So, the equation is y = 2x + 4

Every fraction can also be written as a decimal - Knowledge will enable you to work more efficiently and effectively.

Having a strong knowledge of the conversion of fractions to decimals or percentages and vice versa is an important skill to have in many careers.

This is because it is essential to understand and interpret data, statistics, and financial information accurately.

As such, a good understanding of fractions, decimals, and percentages can be a valuable asset in fields such as finance, accounting, marketing, and data analysis.
For instance,

In finance and accounting,

Knowledge of conversions between fractions, decimals, and percentages is critical when calculating interest rates, compound interest, and other financial metrics.

It also enables financial analysts to interpret complex data and reports, calculate percentages and ratios, and make sound investment decisions.
In the field of marketing, fractions, decimals, and percentages are used in analyzing market trends, determining market shares, and calculating the return on investment (ROI).

Understanding the concepts behind these conversions also enables marketers to create compelling sales pitches, product pricing, and promotional strategies that are rooted in data and statistical analysis.
In data analysis,

A good knowledge of fractions, decimals, and percentages is essential in interpreting and presenting data.

It helps to identify trends, make accurate forecasts, and create visual representations of data that can be easily understood by stakeholders.
In conclusion,

Having a strong knowledge of the conversion of fractions to decimals or percentages and vice versa can help you in your future career in many ways.

It enables you to make accurate calculations, interpret complex data, and make informed decisions.  

It is an important skill that can make you stand out in the job market and advance in your career.

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The value of f(2) of the given polynomial by direct substitution is: 45

A polynomial function is defined as a function that involves only non-negative integer powers or only positive integer exponents of a variable in an equation like the quadratic equation, cubic equation, etc. For example, 2x + 3 is a polynomial that has exponent equal to 1.

We are given the polynomial function as:

f(x) = 6x³ - 2x + 1

Now, we want to find f(2) by direct substitution which means we are just going to put 2 for x directly into the polynomial to get:

f(2) = 6(2)³ - 2(2) + 1

f(2) = 48 - 4 + 1

f(2) = 45

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Answer:

Step-by-step explanation:

Flour : sugar : butter

= 6 : 2 : 3

butter = 3 part = 180 g

sugar = 2 part = 180×2/3 = 120 g

flour = 6 part = 180×6/3 = 360 g

If the calculated F-statistic is greater than 2.90, the researcher will conclude that there are significant differences between the means at the α = 0.05 significance level.

The researcher is conducting an analysis of variance (ANOVA) test to determine whether there are significant differences between the means of four different formulations of a new drug.

The null hypothesis in this case is that there are no significant differences between the means of the four formulations. If the calculated F-statistic is large enough to reject the null hypothesis, then the researcher will conclude that there are significant differences between the means.

To determine the range of F-statistic values that would lead to rejecting the null hypothesis at the α = 0.05 significance level, the researcher needs to refer to the F-distribution table.

The degrees of freedom for this test are (4-1) = 3 for the numerator and (10*4-4) = 36 for the denominator. From the F-distribution table, the critical F-value for α = 0.05 with 3 and 36 degrees of freedom is approximately 2.90.

If the calculated F-statistic is less than or equal to 2.90, the researcher will fail to reject the null hypothesis and conclude that there are no significant differences between the means.

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Answer:

1261

Step-by-step explanation:

Correct option is A)

Principal for the first year = Rs.8000, Rate = 5% per annum, T = 1 year

Interest for the first year = =

100

P×R×T

​

=Rs.[

100

8000×5×1

​

]=Rs.400

∴ Amount at the end of the first year = Rs. (8000 + 400) = Rs. 8400

Now principal for the second year = Rs.8400

Interest for the second year =  

100

P×R×T

​

=Rs.[

100

8400×5×1

​

]=Rs.420

∴ Amount at the end of the second year = Rs. (8400 + 420) =Rs.8820

Interest for the third year =  

100

P×R×T

​

=Rs.

100

8820×5×1

​

=Rs.441

∴ Amount at the end of the third year = Rs.(8820 + 441) = Rs. 9261

Now we know that total C.I. = Amount - Principal = Rs. (9261 - 8000) = Rs. 1261

we can also find the C.I. as follows

Total C.I. = Interest for the first year + Interest for the second year + Interest for third year = Rs. (400 + 420 + 441) = Rs.1261

Answer:

  264.5 yd²

Step-by-step explanation:

You want the area of the figure shown.

The given figure can be decomposed into a triangle and two rectangles.

The area of triangle ABH is ...

  A = 1/2bh

  A = 1/2(23 yd)(17 yd) = 195.5 yd²

The area of rectangle CDIH is ...

  A = LW

  A = (9 yd)(5 yd) = 45 yd²

The area of rectangle EFGI is ...

  A = (6 yd)(4 yd) = 24 yd²

The area of the figure is the sum of the areas of its parts:

  total area = triangle area + rectangle CDIH area + rectangle EFGI area

  total area = 195.5 yd² + 45 yd² + 24 yd²

  total area = 264.5 yd²

The value that makes each equation true include the following:

y = 2/7

b = 43

m = 3/7

In this scenario, you are required to determine the value of y, b, and m by evaluating and simplifying the given equation. Therefore, we would subtract 4/7 from both sides of the equation in order to determine the value of y as follows;

y + 4/7 = 6/7

y + 4/7 - 4/7 = 6/7 - 4/7

y = (6 - 4)/7

y = 2/7

17 + b = 60

By subtracting 17 from both sides of the equation, we have the following:

17 + b - 17 = 60 - 17

b = 43.

By subtracting 3/7 from both sides of the equation, we have the following:

6/7 = m + 3/7

6/7 - 3/7 = m + 3/7 - 3/7

m = (6 - 3)/7

m = 3/7.

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Missing information:

The question is incomplete and the complete question is shown in the attached picture.

Selection-sort sorts an array of n elements by repeatedly finding the next smallest/largest item in the array and placing it in its correct position until the entire array is sorted.

Selection-sort is an algorithm for sorting an array of n elements by repeatedly finding the next smallest/largest item in the array and placing it in its correct position.

The algorithm starts by considering the entire array as unsorted and the sorted part of the array as empty.

It then iterates through the unsorted part of the array to find the smallest/largest item, depending on whether it is sorting in ascending or descending order.

Once the smallest/largest item is found, it is swapped with the first element of the unsorted part of the array, effectively placing it in its correct position in the sorted part of the array.

The algorithm then repeats steps 2 and 3, considering the remaining unsorted part of the array until the entire array is sorted.

The process continues until all elements are sorted in their correct positions, resulting in a sorted array.

Therefore, selection-sort sorts an array of n elements by repeatedly finding the next smallest/largest item in the array and placing it in its correct position until the entire array is sorted.

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