Help me please
Surds

The value of d that makes the determinant of A equal to 0 is d = -2.

To find the value of d that makes the determinant of A equal to 0, we need to solve the equation det(A) = 0.

Let's expand the determinant of A using the first row:

det(A) = 5(0(d) - 0(1)) - 0(4(-2) - 0(1)) + 4(2(1) - 0(1))

= 5(0) - 0(0) + 4(2)

= 0 + 8

= 8

Since we want the determinant to be 0, we have the equation 8 = 0. This equation has no solution.

However, we can also observe that when d = -2, the second row of the matrix becomes a multiple of the first row:

2(-2) + (-1)(1) + 1(1) = -4 - 1 + 1 = -4 - 1 + 1 = -4 = 0

This indicates that the rows of the matrix are linearly dependent, resulting in a determinant of 0.

Therefore, the value of d that makes the determinant of A equal to 0 is d = -2.

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Answer:

After reflection over the x-axis, we have the coordinates as follows;

A’ (5,-2)

B’ ( 1,-2)

C’ (3,-6)

Step-by-step explanation:

Here, we want to find the coordinates A’ B’ and C’ after a reflection over the x-axis

By reflecting over the x-axis, the y-coordinate is bound to change in sign

So if we have a Point (x,y) and we reflect over the x-axis, the image of the point after reflection would turn to (x,-y)

We simply go on to negate the value of the y-coordinate

Mathematically if we apply these to the given points, what we get are the following;

A’ (5,-2)

B’ ( 1,-2)

C’ (3,-6)

Step-by-step explanation:

I think mode,range and median dpo ako sure

Answer:

The Mona Lisa

Step-by-step explanation:

Da Vinci?

The point (5, 10) has not been translated in the given figure.Hence this statement is false.

The graph shows five points.

A point has been translated right and up.

Now, the statements that are true based on the graph are as follows:

The point (9, D) has been translated right and up.Answer: False

There is no information given about point (9, D).

So, we cannot say anything about the translation of point (9, D).

The point (1, 8) has been translated right and up.Answer: True

As explained above, the point (1, 8) has been translated 7 units to the right and 2 units up to get the new point (8, 10). So, this statement is true.

The point (2, 9) has been translated right and up.Answer: False

The point (2, 9) has not been translated in the given figure.

So, this statement is false.

Statement 4: The point (8, B) has been translated right and up.Answer: True

The point (8, B) has been translated 1 unit up in the given figure. So, this statement is true.

The point (5, 10) has been translated right and up.Answer: False

The point (5, 10) has not been translated in the given figure.

So, this statement is false.

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the first one is 99 and the second one is 72

Hope this helped

Answer:

33% of 300 is about 99, and 24% of 300 is about 72

Step-by-step explanation:

Hope this helps.

Answer:

Strictly speaking, there is not enough information to solve the problem.

If we assume m<EFY = 90, then:

m<DEY = 29

m<DEF = 58

Step-by-step explanation:

Going by the exact information shown, the answer is really that there isn't enough information to answer the question.

On the other hand, if angle EFY is a right angle, then we have two right triangles that can be proved congruent by HL. Then by CPCTC, angles DEY and FEY are congruent. We set their measures equal and solve for y.

4y - 7 = 2y + 11

2y = 18

y = 9

m<DEY = 4y - 7 = 4(9) - 7 = 36 - 7 = 29

m<DEF = 2m<DEY = 2(29) = 58

The two most generic and widely used valuation multiples in finance and investment analysis are the price-to-earnings (P/E) ratio and the enterprise value-to-earnings before interest, taxes, depreciation, and amortization (EV/EBITDA) multiple.

1. Price-to-Earnings (P/E) Ratio: The P/E ratio is calculated by dividing the market price per share of a company's stock by its earnings per share (EPS). It provides a measure of how much investors are willing to pay for each dollar of earnings generated by the company.

A high P/E ratio suggests that investors have high expectations for future growth and are willing to pay a premium for the stock. On the other hand, a low P/E ratio may indicate that the stock is undervalued or that investors have low expectations for future growth.

2. Enterprise Value-to-EBITDA (EV/EBITDA) Multiple: The EV/EBITDA multiple is calculated by dividing the enterprise value (EV) of a company by its earnings before interest, taxes, depreciation, and amortization (EBITDA).

The EV is the total market value of a company's equity and debt, minus its cash and cash equivalents. EBITDA represents the company's operating earnings before accounting for interest, taxes, depreciation, and amortization.

The EV/EBITDA multiple is commonly used in evaluating the valuation of companies, especially in the context of mergers and acquisitions. It provides a measure of a company's overall value relative to its earnings, without being affected by capital structure or tax considerations.

Both the P/E ratio and EV/EBITDA multiple are widely used because they are relatively easy to calculate and understand. However, it's important to note that these multiples have limitations and should be used in conjunction with other valuation methods and qualitative analysis to make informed investment decisions.

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Answer:

The answer is 5 because it is what it is.

Step-by-step explanation:

Answer:

25

Step-by-step explanation:

Answer:

64 times 7.5 and you will get your answer

Step-by-step explanation:

16*4=64

64*7.5=x

x is what you need to find

Answer:

94.1 cm^3 to nearest tenth.

Step-by-step explanation:

Each hour 100 - 10 = 90% of the gas remains.

90% = 0.90.

At 0 hours the volume = 300 cm^3

The equation is

Amount (V) after x hours = 300(0.90)^x.

The amount after 11 hours:

V = 300(0.90)^11

= 94.14

Answer:

y = 300(0.9)^x

94.1 cm³

Step-by-step explanation:

This is an exponential decay.

y = 300(0.9)^x

where x is the number of hours, and y is the amount after x hours.

y = 300(0.9)^11

y = 94.1

Answer:

C. It is used to find the sum of interior angles

Also , it can be used to find the number of triangles in the polygon,

Step-by-step explanation:

Example :

Find the sum of interior angles whose no of sides is 6 and give the name of the polygon

  Solution

S = (n-2)180°

S = (6-2)180°

S = (4)180°

S = 720°

The polygon is a Hexagon

I hope it helps  :)

S = (n – 2)180° is used to calculate the sum of interior angles of the polygon. Then the correct option is A.

The polygon is a 2D geometry that has a finite number of sides. And all the sides of the polygon are straight lines connected to each other side by side.

The sum of the interior angle of the polygon is given as,

S = (n – 1)180°

Where, n be the number of the sides.

Then the correct option is A.

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The height of the office building casting a shadow of 107ft is approximately 124.83 ft.

A ratio is simply the relation between two amounts showing how many times a value is contained within another value.

Given the data in the question;

Ratio of height of office building and its height = x / 107

Ratio of height of post and its height = 7 / 6

Equate the two to get the height of the office building.

x / 107 = 7 / 6

Solve for x

x × 6 = 7 × 107

6x = 749

x = 746 / 6

x = 124.83 ft

Therefore, the height of the building is 124.83 ft.

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Answer:

perpendicular

Step-by-step explanation:

7y = -x - 3

y = -1/7 x - 3/7

-1/7 is the reciprocal of the opposite, so the lines are perpendicular

Answer:

0.28277

I got this by plugging in 0.2512 for "A" ( A = π r² ) Then I solved the rest ( divide both sides by pie, then taking the square root from that.

Step-by-step explanation:

Cos Milky Said it.

Answer:

12?

Step-by-step explanation:

Answer:The Answer is 10!!!

Step-by-step explanation:

If you plot (1,4) and (-5,-4) on a graph, you can see that you can form a right triangle.

you would count the values on the X-axis and on the Y-axis. The values are 6 and 8 respectively.

You put the values on the second power and add them. So the equation would be 6^2 + 8^2. The answer would be 100.  Because the Pythagorean Theorem is a^2 + b^2= c^2, you would square root would be 10. The distance between the two points is 10.

The force is 1.6N and the distance between them is 1.3 meters

An inverse variation from force to the square of distance is represented s:

k = Fd^2

Where k represents the variation constant

When F = 10, d = 2.

So, we have:

k = 10 * 2^2

k = 40

Substitute k = 40 in k = Fd^2

Fd^2 = 40

When d = 5, we have:

F * 5^2 = 40

This gives

25F = 40

Divide by 25

F = 1.6

Hence, the force is 1.6N

In (a), we have:

Fd^2 = 40

When F = 25, we have:

25 * d^2 = 40

This gives

25d^2 = 40

Divide by 25

d^2 = 1.6

Take the square root of both sides

d = 1.3

Hence, the distance between them is 1.3 meters

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The formula for the number of cells after t days, given that 200 cells are present at t = 0 is \(N(t) = 40(3^t - 1) + 200\;ln(3)\), whereas the number of cells present after 11 days is approximately 7,085,864.

The given differential equation \(N'(t) = Ae^{kt}\) describes the rate of increase in the number of diseased cells N(t) at time t, where A is the rate of increase at time 0 and k is a constant. The solution to this differential equation is  \(N(t) = (A/k) \times e^{kt} + C,\) where C is an arbitrary constant that can be determined from an initial condition.

a. Using the given information, A = 40 and N'(5) = 120. Substituting these values into the equation \(N'(t) = Ae^{kt}\), we get:

\(120 = 40e^{(5k)}\)

Solving for k, we have:

k = ln(3)

Substituting A = 40 and k = ln(3) into the equation for N(t), and using the initial condition N(0) = 200, we get:

\(N(t) = (40/ln(3)) \times e^{(ln(3)t)} + 200\)

Simplifying this expression, we obtain:

\(N(t) = 40(3^t - 1) + 200ln(3)\)

b. To find the number of cells present after 11 days, we substitute t = 11 into the expression for N(t) that we obtained in part a:

\(N(11) = 40(3^{11} - 1) + 200ln(3)\)

Simplifying this expression, we get:

\(N(11) = 40(177146) + 200ln(3) \approx 7,085,864\)

Therefore, the number of cells present after 11 days is approximately 7,085,864.

In summary, the given differential equation \(N'(t) = Ae^{kt}\) describes the rate of increase in the number of diseased cells N(t) at time t, and the solution to this equation is \(N(t) = (A/k) \times e^{kt} + C,\)  where C is an arbitrary constant that can be determined from an initial condition.

We used this equation to find a formula for the number of cells after t days, given A, k, and an initial condition, and used it to find the number of cells present after 11 days.

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The unitary matrix U is

\(\[ U = \begin{bmatrix}\frac{1}{\sqrt{2}} & -\frac{1}{\sqrt{2}} & \frac{1}{\sqrt{3}} \\\frac{1}{\sqrt{2}} & -\frac{1}{\sqrt{2}} & \frac{1}{\sqrt{3}} \\0 & 0 & \frac{1}{\sqrt{3}}\end{bmatrix}\]\)

and the upper triangular matrix T is

\(\[ T = \begin{bmatrix}-1 & 1 & 0 \\0 & -1 & 0 \\0 & 0 & 3\end{bmatrix}\].\)

To find a unitary matrix U and an upper triangular matrix T such that

\(\(U^*AU = T\)\) for the given matrix A, follow these steps:

Step 1: Find the eigenvalues of A.

The eigenvalues of matrix A are obtained by evaluating the characteristic polynomial \(\(\det(A - \lambda I)\):\((\lambda + 1)^2(\lambda - 3)\)\)

The eigenvalues of A are \(\(\lambda_1 = -1\) (with multiplicity 2) and \(\lambda_2 = 3\).\)

Step 2: Find the eigenvectors corresponding to each eigenvalue of A.

For \(\(\lambda_1 = -1\)\), the eigenvectors are obtained by solving the system \(\((A + I)x = 0\)\). The solutions are:

\(\((1, 1, 0)\) and \((-1, -1, 0)\)\)

For\(\(\lambda_2 = 3\)\), the eigenvector is obtained by solving the system \(\((A - 3I)x = 0\).\) The solution is: \(\((1, 1, 1)\)\)

Step 3: Normalize the eigenvectors to obtain orthonormal eigenvectors.

Normalize the eigenvectors obtained in Step 2 to obtain orthonormal eigenvectors.

For \(\(\lambda_1 = -1\),\) the orthonormal eigenvectors are:

\(\(v_1 = \left(\frac{1}{\sqrt{2}}, \frac{1}{\sqrt{2}}, 0\)\) )\)and \(\(v_2 = \left(-\frac{1}{\sqrt{2}}, -\frac{1}{\sqrt{2}}, 0\)\))\)

For \(\(\lambda_2 = 3\)\), the orthonormal eigenvector is:

\(\(v_3 = \left(\frac{1}{\sqrt{3}}, \frac{1}{\sqrt{3}}, \frac{1}{\sqrt{3}}\)\))\)

Step 4: Combine the orthonormal eigenvectors to form a unitary matrix U.

For a 3x3 matrix, there are 3 orthonormal eigenvectors for A. Combine them to form a unitary matrix U as follows:

\(\(U = [v_1 v_2 v_3] = \begin{bmatrix}\frac{1}{\sqrt{2}} & -\frac{1}{\sqrt{2}} & \frac{1}{\sqrt{3}} \\\frac{1}{\sqrt{2}} & -\frac{1}{\sqrt{2}} & \frac{1}{\sqrt{3}} \\0 & 0 & \frac{1}{\sqrt{3}}\end{bmatrix}\)\)

Step 5: Obtain the upper triangular matrix T.

The upper triangular matrix T is obtained as\(\(T = U^*AU\)\). Compute the product:

\(\(T = U^*AU = \begin{bmatrix}-1 & 1 & 0 \\0 & -1 & 0 \\0 & 0 & 3\end{bmatrix}\)\)

Therefore, the unitary matrix U is \(\(\begin{bmatrix}\frac{1}{\sqrt{2}} & -\frac{1}{\sqrt{2}} & \frac{1}{\sqrt{3}} \\\frac{1}{\sqrt{2}} & -\frac{1}{\sqrt{2}} & \frac{1}{\sqrt{3}} \\0 & 0 & \frac{1}{\sqrt{3}}\end{bmatrix}\),\) and the upper triangular matrix T is \(\(\begin{bmatrix}-1 & 1 & 0 \\0 & -1 & 0 \\0 & 0 & 3\end{bmatrix}\).\)

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Answer:

figure b

Step-by-step explanation:

cuz yez

Answer:

40.84 inches

Step-by-step explanation:

C=πd

C=π(13)

C=13π

C=40.84

So the pizza has a circumference of about 40.84 inches.

The required value of the expression at x = 4 and y = 2 is -23.

An algebraic expression can be obtained by doing mathematical operations on the variable and constant terms.

The variable part of an algebraic expression can never be added or subtracted from the constant part.

The given expression is as below,

5(y + 3) - 3x²

In order to find the value of the given expression at x = 4 and y = 2, substitute the corresponding values in the expression to get,

5(y + 3) - 3x²

= 5(2 + 3) - 3 × 4²

= 5 × 5 - 3 × 16

= 25 - 48

= -23

Hence, the given expression can be evaluated as -23.

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Answer:0.375

Step-by-step explanation:

3/4=0.75

0.75/2=0.375

(3/4)/2=0.375

Standard deviation is a statistic that measures the dispersion of a dataset relative to its mean and is calculated as the square root of the variance.

Standard deviation = √ {(xi – x)^2 / (n-1)}

here (xi – x)^ 2 means variance and n is sample size .

so we can say

Standard deviation = √{ (variance / sample size – 1 )}

here variance is 64.58 and sample size is 26 is given.

So stand deviation = √{64.58 / (26-1)}

standard deviation =0.32144673

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the standard deviation will be 0.32144673 for the data having variance as 64.58 and sample size as 26.

Standard deviation is a statistic that measures the dispersion of a dataset relative to its mean and is calculated as the square root of the variance.

Standard deviation = √ {(xi – x)^2 / (n-1)}

here (xi – x)^ 2 means variance and n is sample size .

so we can say

Standard deviation = √{ (variance / sample size – 1 )}

here variance is 64.58 and sample size is 26 is given.

So standard deviation = √{64.58 / (26-1)}

standard deviation = 0.32144673

Therefore, the standard deviation will be 0.32144673 for the data having variance as 64.58 and sample size as 26.

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Answer:

34 miles

Step-by-step explanation:

You just need to add her 9 then the extra 25 miles to find the starting set of miles

Answer:

Elisa ran 34 miles

Step-by-step explanation:

Shawna ran 9 miles which is 25 less than Elisa

Elisa ran 25 miles more than Shawna

equation:

9 = x - 25

add 25 on both sides:

9 + 25 = x - 25 + 25

34 = x

Elisa ran 34 miles