Please help with this problem in MATLAB!
P1 20 Array| Given a \( n \times m \) matrix, process it with the following rules: 1. Copy elements greater or equal to 25 in the matrix at original places to generate a new matrix. Elements less than

The transitive theorem is a property of equality that states that if a = b and b = c, then a = c.

This theorem is often used in mathematics to prove equalities between different quantities. For example, if we know that x + y = z and z + a = b, we can use the transitive theorem to conclude that x + y + a = b.

The transitive theorem is based on the idea of transitive relations, which are relationships that hold between three elements in a given set, regardless of their specific values. Equality is a transitive relation because if a is equal to b, and b is equal to c, then a must also be equal to c.

The transitive theorem is an important concept in mathematics and is used in many different contexts, including algebra, geometry, and more. It is a useful tool for proving equalities and can help us solve problems and make deductions about different quantities.

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If two parallel lines are cut by a transversal,

then alternate interior angles are congruent.

Since one alternate interior angle measures 60 degrees,

the other alternate interior angle must also measure 60 degrees.

A simple random sample of 500 voters would be an appropriate method for a pollster to use in this situation.

In this method, each voter in the town is assigned a unique identifier and a list of all unique identifiers is created. Then, using a random number generator or a random number table, 500 unique identifiers are selected and those individuals are surveyed.

This method ensures that each voter in the town has an equal chance of being selected, so that the sample is representative of the population of voters. It also eliminates any potential biases that may be introduced if the pollster were to select individuals based on certain criteria (such as age, gender, or location).

By using a random sample, the pollster can have a good estimate of the true population parameter (voter preferences) with a high degree of confidence.

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Answer:  C

Step-by-step explanation:

If a parabola is given by \(a(x - h)^2 + k\), the focus is at the point \((h, k + 1/4a)\).

We know the focus is \((3, 8)\), so it should look like \(a(x - 3)^2 + k\). We can cross off B and D.

Let's check if A works: \(8 = -9 + 1/(4 \cdot \frac 14) = -8\). Obviously this is false, so we can cross off A.

Thus it's C by process of elimination.

Using the z-distribution, the sample sizes required are given as follows:

a) 822.

b) 1068.

A confidence interval of proportions is given by:

\(\pi \pm z\sqrt{\frac{\pi(1-\pi)}{n}}\)

Then, the margin of error is given by:

\(M = z\sqrt{\frac{\pi(1-\pi)}{n}}\)

In which:

We have a 95% confidence level, hence\(\alpha = 0.95\), z is the value of Z that has a p-value of \(\frac{1+0.95}{2} = 0.975\), so the critical value is z = 1.96.

Item a:

The estimate is of \(\pi = 0.26\), hence we solve for n when M = 0.03.

\(M = z\sqrt{\frac{\pi(1-\pi)}{n}}\)

\(0.03 = 1.96\sqrt{\frac{0.26(0.74)}{n}}\)

\(0.03\sqrt{n} = 1.96\sqrt{0.26(0.74)}\)

\(\sqrt{n} = \frac{1.96\sqrt{0.26(0.74)}}{0.03}\)

\((\sqrt{n})^2 = \left(\frac{1.96\sqrt{0.26(0.74)}}{0.03}\right)^2\)

n = 821.2

Rounding up, a sample of 822 is needed.

Item b:

No prior estimate, hence \(\pi = 0.5\), which is when the largest sample size is needed.

\(M = z\sqrt{\frac{\pi(1-\pi)}{n}}\)

\(0.03 = 1.96\sqrt{\frac{0.5(0.5)}{n}}\)

\(0.03\sqrt{n} = 1.96\sqrt{0.5(0.5)}\)

\(\sqrt{n} = \frac{1.96\sqrt{0.5(0.5)}}{0.03}\)

\((\sqrt{n})^2 = \left(\frac{1.96\sqrt{0.5(0.5)}}{0.03}\right)^2\)

n = 1067.11

Rounding up, a sample of 1068 is needed.

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The slope is approximately -1.28, the intercept is approximately 263.93, and the correlation is approximately -0.92.

To find the slope of the regression line predicting Y from X, we use the formula:

slope = \((nΣ(XY) - ΣXΣY) / (nΣ(X^2) - (ΣX)^2)\)

First, we calculate the necessary summations:

ΣX = 29 + 63 + 67 + 103 + 113 = 375

ΣY = 205 + 221 + 176 + 123 + 112 = 837

ΣXY = (29205) + (63221) + (67176) + (103123) + (113*112) = 71450

\(ΣX^2 = (29^2) + (63^2) + (67^2) + (103^2) + (113^2) = 48114\)

Using these values, we can calculate the slope:

slope = (571450 - 375837) / (5*48114 - (375^2))

= -1.28 (rounded to 2 decimal places)

Next, we find the intercept of the regression line using the formula:

intercept = (ΣY - slope * ΣX) / n

intercept = (837 - (-1.28 * 375)) / 5

= 263.93 (rounded to 2 decimal places)

Lastly, to determine the correlation between X and Y, we calculate the correlation coefficient using the formula:

correlation = \((nΣXY - ΣXΣY) / √((nΣX^2 - (ΣX)^2)(nΣY^2 - (ΣY)^2))\)

correlation =\((571450 - 375837) / √((548114 - (375^2))(5210457 - (837^2)))\)

= -0.92 (rounded to 2 decimal places)

Therefore, the slope of the regression line predicting Y from X is approximately -1.28, the intercept is approximately 263.93, and the correlation between X and Y is approximately -0.92.

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Using the Bayes' theorem, we find the probability that the transferred ball was white given that the second ball drawn was white to be 52/89, or approximately 0.5843.

To solve this problem, we can use Bayes' theorem, which relates the conditional probability of an event A given an event B to the conditional probability of event B given event A:

P(A|B) = P(B|A) * P(A) / P(B)

where P(A|B) is the probability of event A given that event B has occurred, P(B|A) is the probability of event B given that event A has occurred, P(A) is the prior probability of event A, and P(B) is the prior probability of event B.

In this problem, we want to find the probability that the transferred ball was white (event A) given that the second ball drawn was white (event B). We can calculate this probability as follows:

P(A|B) = P(B|A) * P(A) / P(B)

P(B|A) is the probability of drawing a white ball from urn b given that the transferred ball was white and is now in urn b. Since there are now six white balls and three black balls in urn b, the probability of drawing a white ball is 6/9 = 2/3.

P(A) is the prior probability of the transferred ball being white, which is the number of white balls in urn a divided by the total number of balls in urn a, or 6/13.

P(B) is the prior probability of drawing a white ball from urn b, which can be calculated using the law of total probability:

P(B) = P(B|A) * P(A) + P(B|not A) * P(not A)

where P(B|not A) is the probability of drawing a white ball from urn b given that the transferred ball was black and P(not A) is the probability that the transferred ball was black, which is 7/13.

To calculate P(B|not A), we need to first calculate the probability of the transferred ball being black and then the probability of drawing a white ball from urn b given that the transferred ball was black.

The probability of the transferred ball being black is 7/13. Once the transferred ball is moved to urn b, there are now five white balls and four black balls in urn b, so the probability of drawing a white ball from urn b given that the transferred ball was black is 5/9.

Therefore, we can calculate P(B) as follows:

P(B) = P(B|A) * P(A) + P(B|not A) * P(not A)

= (2/3) * (6/13) + (5/9) * (7/13)

= 89/117

Now we can plug in all the values into Bayes' theorem to find P(A|B):

P(A|B) = P(B|A) * P(A) / P(B)

= (2/3) * (6/13) / (89/117)

= 52/89

Therefore, the probability that the transferred ball was white given that the second ball drawn was white is 52/89, or approximately 0.5843.

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Answer:-7

Step-by-step explanation:

Answer:

-7

Step-by-step explanation:

Answer:

$8000

Step-by-step explanation:

For every $1000 Katrina sells, she earns $75. This is becuase when we multiply what she sold by her commision price, we get what she made

If we want to find how much she needs to make to earn $600, we can divide 600 by 75. This gives us 8. So, she will need to sell $8000 in order to earn $600

Answer: 6 x-289

Step-by-step explanation:

Answer:

0.2

Step-by-step explanation:

Random numbers are frequently used in computing and are invaluable tools for applications requiring random outcomes. Random numbers can be used to give random outcomes, such as in a game of chance, where each player has an unpredictable chance of winning. They can also be used to describe the uncertainty of input values, such as when making decisions using probabilistic models.

Random numbers can also be used to assign values to the parameters of a problem, such as in genetic algorithms, where random initial values are used to explore the potential solutions.

Finally, random numbers can also be used to change the problem solution, as in simulated annealing, where a series of random changes is used to find the optimal solution. In conclusion, random numbers can serve many useful and important purposes in computing and are a key part of many problem-solving algorithms.

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Answer:

the measure of angle 1 is 125

Step-by-step explanation:

hope this you the answer to your question

Answer:

pls give image

Step-by-step explanation:

The correct definition of dependent events is two events are dependent if the outcome of the first event affects the outcome of the second event.

Two events are dependent if the outcome of one of the event depends on the outcome of the first event.  An example of a dependent event is if it rains, the floor would be wet.

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Answer:

This equals -9

Step-by-step explanation: Im smart

Answer:

4x

Step-by-step explanation:

Hope this helps☺️

Answer: 4

Step-by-step explanation:

One tablet weighs will be 1.93 pounds.​

Mathematical expression is defined as the collection of the numbers variables and functions by using operations like addition, subtraction, multiplication, and division.

Given that;

The combined weight of 4 identical tablet computers and a 4 3-pound laptop is 10.7 pounds.

Now,

Let the weight of 1 tablet = x

So, We can formulate;

⇒ 4x + 3 = 10.7

Solve for x as;

⇒ 4x = 10.7 - 3

⇒ 4x = 7.7

⇒ x = 7.7 / 4

⇒ x = 1.93 pounds

Thus, One tablet weighs = 1.93 pounds.​

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Answer:

y = -4/5x + 4

General Formulas and Concepts:

Pre-Algebra

Algebra I

Standard Form: Ax + By = C

Slope-Intercept Form: y = mx + b

Step-by-step explanation:

Step 1: Define

Standard Form:   4x + 5y = 20

Step 2: Rewrite

Answer:

Option D

Step-by-step explanation:

Looking at the graph each jump is 2 units on the x-axis and y-axis :

We are looking for a quadratic with x values of 3 and 6 when y=0  

Solving the last quadratic gives us :

(x-3)(x-6)=0

x = 3 , x = 6

Our answer will be Option D

Hope this helped and have a good day  

Answer:

D: \(y=x^{2} -9x+18\\\)

Step-by-step explanation:

x intercept of the curve is 3 and 6

meaning that when y=0, x is either 3 or 6

mathematically stated:

0 = (x - 3)  (x - 6)

0=x(x-6)-3(x-6)

\(0=x^{2} -6x-3x+18\\therefore \ y=x^{2} -9x+18\\\)

The general equation of the plane that passes through the origin and is perpendicular to the line of intersection of the planes -x+y+2=0 and z-3=0 is: x + y = 0.

What is equation?

An equation is a mathematical statement that states the equality of two expressions. It consists of two sides, often referred to as the left-hand side (LHS) and the right-hand side (RHS), separated by an equal sign (=).

To find the general equation of the plane that passes through the origin and is perpendicular to the line of intersection of the planes -x+y+2=0 and z-3=0, we need to determine the normal vector of the plane.

The line of intersection of two planes is perpendicular to the normal vectors of both planes. Therefore, we first find the normal vectors of the given planes.

For the plane -x+y+2=0, the normal vector is [coefficients of x, y, z] = [-1, 1, 0].

For the plane z-3=0, the normal vector is [coefficients of x, y, z] = [0, 0, 1].

To find the normal vector of the plane that is perpendicular to the line of intersection, we take the cross product of the normal vectors of the given planes:

[ -1, 1, 0 ] × [ 0, 0, 1 ] = [ 1, 1, 0 ].

The obtained vector, [1, 1, 0], is the normal vector of the desired plane. Now we can write the general equation of the plane:

Ax + By + Cz = 0,

where A, B, and C are the components of the normal vector.

Substituting the values A=1, B=1, and C=0, the general equation of the plane is:

x + y = 0.

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Answer:

x = -5 and x = -4 are the x-intercepts of this parabola.

To test the hypothesis that the mean weight of two sheets is equal (μ1 - μ2) against the alternative that it is not, and assuming equal variances, we can use a two-sample t-test. The t-statistic can be calculated using the following formula:

t = (x1 - x2) / (s_p * sqrt(1/n1 + 1/n2))

where:

x1 and x2 are the sample means of the two sheets,

s_p is the pooled standard deviation,

n1 and n2 are the sample sizes.

The pooled standard deviation (s_p) can be calculated using the following formula:

s_p = sqrt(((n1 - 1) * s1^2 + (n2 - 1) * s2^2) / (n1 + n2 - 2))

where:

s1 and s2 are the sample standard deviations.

To calculate the t-statistic, we need the sample means, sample standard deviations, and sample sizes.

Once you provide the specific values for these variables, I can assist you in calculating the t-statistic to 3 decimal places.

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To test the hypothesis that the mean weight of the two sheets is equal (μ1 - μ2) against the alternative that it is not, we can use a paired t-test assuming equal variances. The paired t-test is used when we have paired data or measurements on the same subjects or objects.

The t-statistic for a paired t-test is calculated as follows:

t = (X1 - X2) / (s / √n)

where X1 and X2 are the sample means of the two samples, s is the pooled standard deviation, and n is the number of pairs.

Please provide the sample means, standard deviation, and sample size for each sheet so that we can calculate the t-statistic to 3 decimal places.

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Answer:

your writing to read difficult

The function f(x) = x² - 1/x + 1, with domain [0, ∞), does not have an absolute maximum on its domain, but this does not contradict the extreme value theorem.

The extreme value theorem states that if a real-valued function f is continuous on a closed interval [a, b], then f must have both an absolute maximum and an absolute minimum on that interval.

However, the theorem does not apply to functions that have an open interval as their domain, such as f(x) = x² - 1/x + 1 with a domain of [0, ∞).

In this case, f(x) approaches infinity as x approaches 0, but it does not have a maximum value within the given domain. The lack of an absolute maximum for f(x) on [0, ∞) is consistent with the behavior of the function, and it does not violate the extreme value theorem since the domain is not a closed interval.

Therefore, the function f(x) = x² - 1/x + 1, defined on [0, ∞), lacks an absolute maximum, but this does not violate the extreme value theorem.

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Answer:

3

Step-by-step explanation:

5 is a term 6b is a term 3d is a term

Let's call the number of pancake breakfasts the Drama Club needs to sell "x".

The total revenue from selling "x" pancake breakfasts can be calculated by multiplying the number of breakfasts by the price per breakfast:

Total revenue = x * $5.25

The total cost of running the pancake breakfast event includes the rental cost of the facility plus the cost of making the pancakes and other expenses. Since we don't know the exact cost of making the pancakes and other expenses, we'll call the total cost "C".

Total cost = $152 + C

The profit can be calculated as the difference between the total revenue and the total cost:

Profit = Total revenue - Total cost

We want the profit to be $1000, so we can set up the following equation:

$1000 = x * $5.25 - ($152 + C)

To solve for "x", we need to isolate it on one side of the equation. First, we can simplify the equation by combining like terms:

$1000 = $5.25x - $152 - C

Next, we can add $152 and "C" to both sides of the equation:

$1152 + C = $5.25x

Finally, we can divide both sides of the equation by $5.25 to solve for "x":

x = ($1152 + C) / $5.25

Since we don't know the exact cost of making the pancakes and other expenses, we can't solve for "x" exactly. However, we do know that the Drama Club needs to sell enough pancake breakfasts to make a profit of $1000. Therefore, we can set up an inequality to represent this:

Total revenue - Total cost ≥ $1000

x * $5.25 - ($152 + C) ≥ $1000

Simplifying this inequality, we get:

x * $5.25 ≥ $1152 + C + $1000

x * $5.25 ≥ $2152 + C

x ≥ ($2152 + C) / $5.25

This means that the Drama Club needs to sell at least ($2152 + C) / $5.25 pancake breakfasts to make a profit of $1000, where "C" is the cost of making the pancakes and other expenses.

Answer:

\(\sf Tan \ D = \dfrac{4}{3}\)

Step-by-step explanation:

Trigonometry ratios:

       \(\sf \boxed{\bf \tan \ D =\dfrac{opposite \ side \ of \ \angle \ D}{adjacent \ side \ of \ \angle D}}\)

                   \(\sf =\dfrac{BC}{DC}\\\\ =\dfrac{32}{24}\\\\=\dfrac{4}{3}\)

Step-by-step explanation:

IF  x-4   is a factor, then putting in x = + 4    will make the polynomial = 0

5 ( 4^3) - 20 (4^2) - 5(4)  + 20   =   0    Yes...it is a factor

\(x - 4 = 0 \\ x = 4 \\ \)

substitute value of x in the function to see if it equals to zero , if not it won't be a factor of the function

\(5 {x}^{3} - 20 {x}^{2} - 5x + 20 = 0 \\ 5(4) ^{3} - 20( {4})^{2} - 5(4) + 20 = 0 \\ 5(64) - 20(16) - 20 + 20 = 0 \\ 320 - 320 - 20 + 20 = 0 \\ 0 = 0\)

so (x-4) is a factor for the function