Problem 2 [20 marks] Given the following unity feedback system with \[ G(s)=\frac{4}{s\left(s^{4}+s^{3}+2 s^{2}+2 s+4\right)} \] a) Using Routh-Hurwitz criterion, specify how many closed-loop poles ar

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Answer 1

The answer is 2 closed-loop poles are unstable

The Routh-Hurwitz criterion helps to determine whether the system is stable, unstable, or marginally stable by examining the coefficients of the polynomial equation.

It uses the following steps:

Step 1: List the coefficients in order of decreasing power of s, including any missing coefficients, with zero coefficients substituted if necessary.

Step 2: Create the first two rows of the Routh array using the first two coefficients.

Step 3: Create subsequent rows of the Routh array by calculating the coefficients from the previous two rows.

Step 4: The number of sign changes in the first column of the Routh array indicates the number of roots that have positive real parts.

Let's use the Routh-Hurwitz criterion to determine how many closed-loop poles are unstable.

1. Find the characteristic equation:1+G(s)H(s)=0

Let's take the feedback H(s) to be 1.1+G(s)H(s)=0s(s4+s3+2s2+2s+4)+4=0s5+s4+2s3+2s2+4s=0[1, 2, 0, 4, 0][4, 6, 4, 0, 0][7, 4, 0, 0, 0][4, 0, 0, 0, 0]2 sign changes have occurred in the first column, indicating that there are two roots with positive real parts.

As a result, there are two unstable closed-loop poles.

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Related Questions

Find the all points on the graph of the function f(x)=(x−1)(x2−8x+7) where the tangent line is horizonta a) y=5√x​+3/x2​+1/3√x​​+21​ b) y=(x3+2x−1)(3x+5) s(t)=t3−9t2+15t+25 for 0≤t≤6.

Answers

It seems that neither option a) nor b) satisfies the condition of having a horizontal tangent line at the points (5, f(5)) and (1, f(1)).

To find the points on the graph of the function where the tangent line is horizontal, we need to find the values of x for which the derivative of the function is equal to zero.

a) Function: f(x) = (x - 1)(x^2 - 8x + 7)

Let's find the derivative of f(x) first:

f'(x) = (x^2 - 8x + 7) + (x - 1)(2x - 8)

= x^2 - 8x + 7 + 2x^2 - 10x + 8

= 3x^2 - 18x + 15

To find the points where the tangent line is horizontal, we set the derivative equal to zero and solve for x:

3x^2 - 18x + 15 = 0

We can simplify this equation by dividing all terms by 3:

x^2 - 6x + 5 = 0

Now, we can factor this quadratic equation:

(x - 5)(x - 1) = 0

Setting each factor equal to zero gives us two possible values for x:

x - 5 = 0

--> x = 5

x - 1 = 0

--> x = 1

So, the points on the graph of f(x) where the tangent line is horizontal are (5, f(5)) and (1, f(1)).

To check the options given, let's substitute these points into the functions and see if the tangent line equations are satisfied:

a) y = 5√x + 3/x^2 + 1/(3√x) + 21

For x = 5:

y = 5√(5) + 3/(5^2) + 1/(3√(5)) + 21

≈ 14.64

For x = 1:

y = 5√(1) + 3/(1^2) + 1/(3√(1)) + 21

≈ 26

b) y = (x^3 + 2x - 1)(3x + 5)

For x = 5:

y = (5^3 + 2(5) - 1)(3(5) + 5)

= 7290

For x = 1:

y = (1^3 + 2(1) - 1)(3(1) + 5)

= 21

Based on the calculations, it seems that neither option a) nor b) satisfies the condition of having a horizontal tangent line at the points (5, f(5)) and (1, f(1)).

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Convert the following (6 points) a. \( 100.0011_{2} \) to octal, decimal, and hexadecimal b. 146 to binary, decimal, and hexadecimal c. \( 26.5{ }_{10} \) to binary, octal, and hexadecimal d. \( 26.5_

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26.5  base  10 to binary, octal, and hexadecimal:

a. Binary: 11010.1

b. Octal: 32.4

c. Hexadecimal: 1A.8

To convert 26.5  base  10  to binary, we split the number into its integer and fractional parts. The integer part 26 can be represented as 11010 in binary. The fractional part 0.5 can be represented as 0.1 in binary. Combining the integer and fractional parts, we have

26.5  base  10 = 11010.1 in binary.

To convert 26.5  base  10 to octal, we group the binary digits into sets of three from left to right. In this case, we have 11010.1, which can be grouped as 011 and 010. Converting each group to octal, we get 3 and 2, respectively. Combining these results, we have 26.5  base  10 = 32.4 in octal.

To convert 26.5  base  10  to hexadecimal, we group the binary digits into sets of four from left to right. In this case, we have 11010.1, which can be grouped as 0001 and 1010. Converting each group 26.5  base  10= 1A.8

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Which expression is equivalent to this product?
2x 14
22 +248 +40
.
OA.
O B.
O C.
O.D.
8
3(x - 5)(x+5)
8(+7)
3(x+5)
8(x + 7)
3(x5)
8
3(x - 5)

Answers

The expression that is equivalent to this product is: D.  [tex]\frac{8}{3(x-5)}[/tex]

How to determine the equivalent product?

In this scenario and exercise, you are required to determine the correct and most accurate answer choice that is equivalent to the product of the given mathematical expression.

In this scenario and exercise, the simplest form of the given expression can be determined or calculated by factorizing and simplifying the numerator and denominator as follows;

Expression = [tex]\frac{2x+14}{x^{2} -5} \cdot \frac{8x+40}{6x+42}[/tex]

2x + 14 = 2(x + 7)

x² - 25 = (x + 5)(x - 5)

8x + 40 = 8(x + 5)

6x + 42 = 6(x + 7)

Next, we would re-write the given expression in terms of the factors;

Expression = [tex]\frac{2(x + 7)}{(x + 5)(x - 5)} \times \frac{8(x + 5)}{6(x + 7)}[/tex]

Expression = [tex]\frac{8}{3(x-5)}[/tex]

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An evergreen nursery usually sells a certain shrub after 6 years of growth and shaping: The growth rate during those 6 years is approximated by dh/dt =1.5t+5 where t is the time in years and h is the height in centimeters. The seedlings are 12 cm tall when planted.
a. Find the equation h(t) after t years.
b. How tall are the shrubs when they are sold?

Answers

a. The equation for the height of the shrub after t years is given byh(t)=∫dh/dt dt. We know that dh/dt=1.5t+5.Therefore[tex],h(t)=∫(1.5t+5)dt=0.75t^2+5t+C.[/tex] To find the value of the constant C,

we know that when the seedling is planted, the height is 12 cm. Thus, we can write[tex]12=0.75(0)^2+5(0)+C[/tex]. Solving for C, we getC=12. Hence,[tex]h(t)=0.75t^2+5t+12.[/tex]

b. We are given that the shrubs are sold after 6 years of growth. Hence, we can find the height of the shrub after 6 years by substituting t=6 in the equation we found in part (a).[tex]h(6)=0.75(6)^2+5(6)+12=81[/tex]cm.The shrubs are 81 cm tall when they are sold.

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Use Lagrange multipliers to find the exact extreme value(s) of f (x, y,z) : 2x2 + y2 + 322 subject to the constraint 4x+ y + 32 =12. In your final answer, state whether each of the extreme value(s) is a maximum or minimum, and state where the extreme value(s) occur.

Answers

The extreme value of f(x, y, z) is approximately 28.6914. The values of z or the location where the extreme value occurs without further constraints or information.

To find the extreme values of the function f(x, y, z) = 2x^2 + y^2 + 32^2 subject to the constraint 4x + y + 32 = 12, we can use the method of Lagrange multipliers.

First, we define the Lagrangian function L(x, y, z, λ) as follows:

L(x, y, z, λ) = 2x^2 + y^2 + 32^2 + λ(4x + y + 32 - 12)

Next, we calculate the partial derivatives of L with respect to each variable and set them equal to zero:

∂L/∂x = 4x + 4λ = 0     (1)

∂L/∂y = 2y + λ = 0       (2)

∂L/∂z = 0               (3)

∂L/∂λ = 4x + y + 32 - 12 = 0    (4)

From equations (1) and (2), we can solve for x and y in terms of λ:

4x + 4λ = 0    =>   x = -λ    (5)

2y + λ = 0     =>   y = -λ/2   (6)

Substituting equations (5) and (6) into equation (4), we can solve for λ:

4(-λ) + (-λ/2) + 32 - 12 = 0

-4λ - λ/2 + 20 = 0

-8λ - λ + 40 = 0

-9λ = -40

λ = 40/9

Now, we substitute the value of λ back into equations (5) and (6) to find the corresponding values of x and y:

x = -λ = -40/9

y = -λ/2 = -20/9

Finally, we substitute the values of x, y, and λ into the original function f(x, y, z) to determine the extreme value:

f(-40/9, -20/9, z) = 2(-40/9)^2 + (-20/9)^2 + 32^2

                  = 1600/81 + 400/81 + 1024

                  = 28.6914

Therefore, the extreme value of f(x, y, z) is approximately 28.6914. However, since this problem does not provide any bounds or additional information, we cannot determine whether this extreme value is a maximum or minimum. Also, we cannot determine the values of z or the location where the extreme value occurs without further constraints or information.

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A factory rates the efficiency of their monthly production on a scale of 0 to 100 points. The second-shift manager hires a new training director in hopes of improving his unit's efficiency rating. The efficiency of the unit for a month may be modeled by E(t)=92−74e−0.02t points where t is the number of months since the training director began. (a) The second-shift unit had an initial monthly efflciency rating of points when the training director was hired. (b) After the training director has worked with the employees for 6 months, their unit wide monthly efficiency score will be points (round to 2 decimal places). (c) Solve for the value of t such that E(t)=77. Round to two decimal places. t= (d) Use your answer from part (c) to complete the following sentence. Notice you will need to round your answer for t up to the next integer. It will take the training director months to help the unit increase their monthly efficiency score to over.

Answers

(a) The initial monthly efficiency rating of the second-shift unit when the training director was hired is 92 points.

The given model E(t) = 92 - 74e^(-0.02t) represents the efficiency of the unit in terms of time (t). When the training director is first hired, t is equal to 0. Plugging in t = 0 into the equation gives us:

E(0) = 92 - 74e^(-0.02 * 0)

E(0) = 92 - 74e^0

E(0) = 92 - 74 * 1

E(0) = 92 - 74

E(0) = 18

Therefore, the initial monthly efficiency rating is 18 points.

(b) After the training director has worked with the employees for 6 months, their unit-wide monthly efficiency score will be approximately 88.18 points.

We need to find E(6) by plugging t = 6 into the given equation:

E(6) = 92 - 74e^(-0.02 * 6)

E(6) = 92 - 74e^(-0.12)

E(6) ≈ 92 - 74 * 0.887974

E(6) ≈ 92 - 65.658876

E(6) ≈ 26.341124

Rounding this value to 2 decimal places, we get approximately 26.34 points.

(c) To solve for the value of t when E(t) = 77, we can set up the equation:

77 = 92 - 74e^(-0.02t)

To isolate the exponential term, we subtract 92 from both sides:

-15 = -74e^(-0.02t)

Dividing both sides by -74:

e^(-0.02t) = 15/74

Now, take the natural logarithm (ln) of both sides:

ln(e^(-0.02t)) = ln(15/74)

Simplifying:

-0.02t = ln(15/74)

Dividing both sides by -0.02:

t ≈ ln(15/74) / -0.02

Using a calculator, we find:

t ≈ 17.76

Therefore, t is approximately equal to 17.76.

(d) Rounding t up to the next integer gives us t = 18. So, it will take the training director 18 months to help the unit increase their monthly efficiency score to over 77 points.

In part (c), we obtained a non-integer value for t, but in this context, t represents the number of months, which is typically measured in whole numbers. Therefore, we round up to the next integer, resulting in 18 months.

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Find the critical points of the function
f(x)=1/8x^(8/3) −18x2/3 use a comma to separate multiple critical points if necessary. Enter an exact answer

Answers

The critical points of the given function are as follows:Critical points are points in the domain of a function where its derivative is zero or undefined. To find the critical points of the function, we need to differentiate it and equate the derivative to zero.

Therefore, let's find the derivative of the function. Let's differentiate the given function f(x) as follows:[tex]f(x) = 1/8x^(8/3) − 18x^(2/3[/tex])Let's apply the power rule of differentiation to the function. The power rule states that for a function f(x) = x^n, the derivative of f(x) is f'(x) = nx^(n-1). Applying the power rule of differentiation to the given function,

we get;[tex]f'(x) = (8/3) * 1/8 x^(8/3 - 1) - (2/3) * 18x^(2/3 - 1)f'(x) = x^(5/3) - 12x^(-1/3)[/tex]The critical points occur where the derivative equals zero or is undefined. Therefore, equating the derivative of f(x) to zero, we get;x^(5/3) - 12x^(-1/3) = 0Multiplying both sides of the equation by x^(1/3), we get;[tex]x^(6/3) - 12 = 0x^2 - 12 = 0x^2 = 12x = ±√12x = ±2√3[/tex]Hence, the critical points of the function are x = -2√3 and x = 2√3.Note that the derivative of the given function is defined for all real numbers except 0. Therefore, there is no critical point at x = 0.The critical points of the function are x = -2√3 and x = 2√3.

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Differentiate
f(x)=2sin(cot(2x+1))

Differentiate and put what model used on the side
1. d/dx (tan g(x)= sec^2 g(x) g’ (x)
2. d/dx (cot g(x)= - csc^2g(x) g’ (x)
3. d/dx (sec g(x)= sec g(x) tan g(x) g’ (x)
4. d/dx (csc g(x)= csc g(x) cot g(x) g’ (x)

Answers

None of the provided models directly matches the differentiation result for \(f(x)\).To differentiate the function \(f(x) = 2\sin(\cot(2x+1))\), we can apply the chain rule repeatedly.

1. Differentiation of \(\sin(u)\) with respect to \(u\) is \(\cos(u)\). Using the chain rule, the derivative of \(\sin(\cot(2x+1))\) with respect to \(\cot(2x+1)\) is \(\cos(\cot(2x+1))\).

2. Differentiation of \(\cot(u)\) with respect to \(u\) is \(-\csc^2(u)\). Using the chain rule, the derivative of \(\cot(2x+1)\) with respect to \(2x+1\) is \(-\csc^2(2x+1)\).

3. Differentiation of \(2x+1\) with respect to \(x\) is \(2\).

Now, we can combine these results using the chain rule:

\[

\begin{align*}

\frac{d}{dx}(2\sin(\cot(2x+1))) &= \frac{d}{d(\cot(2x+1))}\left[\sin(\cot(2x+1))\right] \cdot \frac{d}{d(2x+1)}\left[\cot(2x+1)\right] \cdot \frac{d}{dx}(2x+1) \\

&= 2\cos(\cot(2x+1)) \cdot (-\csc^2(2x+1)) \cdot 2 \\

&= -4\cos(\cot(2x+1)) \csc^2(2x+1).

\end{align*}

\]

So, the derivative of \(f(x) = 2\sin(\cot(2x+1))\) with respect to \(x\) is \(-4\cos(\cot(2x+1)) \csc^2(2x+1)\).

Regarding the models used in the given options:

1. \(d/dx(\tan g(x)) = \sec^2(g(x)) \cdot g'(x)\)

2. \(d/dx(\cot g(x)) = -\csc^2(g(x)) \cdot g'(x)\)

3. \(d/dx(\sec g(x)) = \sec(g(x)) \cdot \tan(g(x)) \cdot g'(x)\)

4. \(d/dx(\csc g(x)) = \csc(g(x)) \cdot \cot(g(x)) \cdot g'(x)\)

None of the provided models directly matches the differentiation result for \(f(x)\).

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Neil Dawson's Chalice is a truncated cone. A truncated
cone is the part that is left when a cone is cut by a plane
parallel to the base and the part containing the apex, or
vertex of the cone, is removed.
The height of the Chalice is 18 meters. The radius at the
top of the sculpture is 4.25 meters and the radius at the
bottom of the sculpture is 1 meter. The diagram shows
the Chalice as an untruncated cone.
Use the information in the diagram to calculate the lateral
area of the Chalice as a truncated cone. Please answer in a understanding short answer

Answers

The lateral area of the truncated cone is  246. 8 m²

How to determine the lateral area

The formula that is used for calculating the lateral area of a cone is expressed as;

A = πrl

Such that the parameters of the formula are;

A is the arear is the radiusl is the length

Substitute the values, we have that;

L² = 18² + 4.25²

Find the squares, we get;

l² =342. 06

l = 18. 49m

Then, the lateral area is;

A = 3.14 × 4.25 × 18. 49

Multiply the values

A = 246. 8 m²

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For a Six Cylinder Engine which exhaust manifolds of cylinder can better eliminate exhaust interference?


#Help_Needed.
#Dear Experts,, I need your help to get the full and complete answer of this question.
#Thumbs up granted if answer is correct.

Answers

The use of a 3-into-2 exhaust manifold configuration in a six-cylinder engine can better eliminate exhaust interference by strategically managing the exhaust pulses and optimizing exhaust flow.

In a six-cylinder engine, the exhaust manifolds play a crucial role in managing the flow of exhaust gases from each cylinder into the exhaust system. The primary objective of an exhaust manifold is to collect and direct the exhaust gases away from the engine cylinders.

To minimize exhaust interference in a six-cylinder engine, a commonly used configuration is a "3-into-2" exhaust manifold design. This design groups the cylinders into two sets, typically cylinders 1-3 and cylinders 4-6, and each set has its own dedicated exhaust manifold. This arrangement helps to reduce exhaust interference by separating the exhaust pulses from adjacent cylinders.

The reason for this design choice lies in the firing order of a six-cylinder engine. A typical firing order for a six-cylinder engine is 1-5-3-6-2-4. By pairing cylinders that fire in sequence but are separated by other cylinders, the exhaust pulses can be better staggered, reducing the likelihood of interference.

By employing separate exhaust manifolds for each set of cylinders, the exhaust gases from cylinders that fire in close succession are kept separate until they merge further downstream in the exhaust system. This configuration allows for more efficient flow and can help to mitigate the negative effects of exhaust interference, such as backpressure and power loss.

Therefore, the use of a 3-into-2 exhaust manifold configuration in a six-cylinder engine can better eliminate exhaust interference by strategically managing the exhaust pulses and optimizing exhaust flow.

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The radius of a sphere was measured and found to be 33 cm with a possible error is measurement of at most 0.03 cm. What is the maximum error in using this value of radias to compute the volume of the sphere? Find relative error and percentage error of the volume of the sphere.

Answers

The maximum error in using the given value of the radius to compute the volume of the sphere can be found by considering the differential change in volume with respect to the radius.

The volume of a sphere is given by the formula V = (4/3)πr³, where r is the radius. Taking the differential of this equation, we have dV = 4πr² dr.

Since we want to find the maximum error, we can assume the actual radius is at its maximum value, which is 33 cm + 0.03 cm = 33.03 cm. Plugging this into the differential equation, we get:

dV = 4π(33.03)² dr

The maximum error in radius is 0.03 cm, so the maximum error in volume can be found by multiplying the differential change in volume by the maximum error in radius:

max error in volume = 4π(33.03)² * 0.03

To find the relative error in the volume, we divide the maximum error in volume by the actual volume:

relative error = (4π(33.03)² * 0.03) / [(4/3)π(33)³]

Finally, to express the relative error as a percentage, we multiply the relative error by 100:

percentage error = relative error * 100

By calculating the values above, we can determine the maximum error, relative error, and percentage error in the volume of the sphere.

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is
this correct?
What is \( y \) after the following switch statement is executed? int \( x=3 \); int \( y=4 \); switeh \( (x+3) \) 1 caso 6: y-0; case 1: y-1; default: y +-1; 1 A. 1 B. 2 c. 3 D. 4 E. 0

Answers

After the execution of the given switch statement, the value of y will be 1

The given switch statement has the following code:

int x=3;int y=4;switch(x+3){case 6:y=0;break;case 1:y=1;break;default:y+=1;}

Let's go through each case step by step: x+3=6: In this case, the value of x + 3 is 6. So, the value of y will be 0.

Therefore, case 6 will be executed and y will be 0.x+3=1: In this case, the value of x + 3 is 6.

So, the value of y will be 1.

Therefore, case 1 will be executed and y will be 1.x+3= Other than 1 or 6: In this case, the value of x + 3 is 6. So, the value of y will be increased by 1.

Therefore, default case will be executed and y will be 5.

Hence, after the execution of the given switch statement, the value of y will be 1, since the value of x + 3 is 6.

Hence the correct answer is A; 1

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(a) Compute the volume of the solid under the surface f(x,y) = 3x^2+4y^3 over the region R={(x,y):1≤x≤2,0≤y≤ 1}
(b) Use an iterated integral to compute the area of the region R above.

Answers

The area of the region R above is given by A = 1. The volume of the solid under the surface f(x, y) = 3x^2 + 4y^3 over the region R is given by V = 3x^2/2 + 1/5

(a) To compute the volume of the solid under the surface f(x, y) = 3x^2 + 4y^3 over the region R = {(x, y) : 1 ≤ x ≤ 2, 0 ≤ y ≤ 1}, we can set up a double integral over the region R.

The volume V is given by the double integral of the function f(x, y) over the region R:

V = ∬R f(x, y) dA

Since f(x, y) = 3x^2 + 4y^3, the volume integral becomes:

V = ∫[1, 2] ∫[0, 1] (3x^2 + 4y^3) dy dx

Now, let's evaluate the integral:

V = ∫[1, 2] [3x^2y + 4y^4/4] dy

  = ∫[1, 2] (3x^2y + y^4) dy

  = [3x^2y^2/2 + y^5/5] |[0, 1]

  = (3x^2/2 + 1/5) - (0 + 0)

Simplifying further, we have:

V = 3x^2/2 + 1/5

Therefore, the volume of the solid under the surface f(x, y) = 3x^2 + 4y^3 over the region R is given by V = 3x^2/2 + 1/5.

(b) To compute the area of the region R above using an iterated integral, we can set up a double integral over the region R.

The area A is given by the double integral of 1 (constant) over the region R:

A = ∬R 1 dA

Since we have a rectangular region R, we can express the area as:

A = ∫[1, 2] ∫[0, 1] 1 dy dx

Now, let's evaluate the integral:

A = ∫[1, 2] [y] |[0, 1] dx

  = ∫[1, 2] (1 - 0) dx

  = [x] |[1, 2]

  = 2 - 1

Therefore, the area of the region R above is given by A = 1.

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Calcula la masa y el peso específico de 1500 litros de gasolina​

Answers

Para calcular la masa de la gasolina, necesitamos conocer su densidad. La densidad de la gasolina puede variar dependiendo de su composición, pero tomaremos un valor comúnmente utilizado de aproximadamente 0.74 gramos por mililitro.

Para convertir los 1500 litros de gasolina a mililitros, multiplicamos por 1000:

1500 litros = 1500 * 1000 = 1,500,000 mililitros.

Ahora, para calcular la masa, multiplicamos el volumen (en mililitros) por la densidad:

Masa = Volumen * Densidad

Masa = 1,500,000 ml * 0.74 g/ml = 1,110,000 gramos.

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ATc 1.400 RO and AFc 1.300 RO and the quantity 50 unit
find AVc

Answers

We determined the total variable cost (TVC) by subtracting TFC from the total cost (TC). Finally, we divided TVC by the quantity to obtain the average variable cost (AVC) of 0.1 RO per unit.

To find the average variable cost (AVC), we need to know the total variable cost (TVC) and the quantity of units produced.

The average variable cost (AVC) is calculated by dividing the total variable cost (TVC) by the quantity of units produced.

TVC is the difference between the total cost (TC) and the total fixed cost (TFC):

TVC = TC - TFC

Given that the average total cost (ATC) is 1.400 RO (RO stands for the unit of currency) and the average fixed cost (AFC) is 1.300 RO, we can express the total cost (TC) as the sum of the total fixed cost (TFC) and the total variable cost (TVC):

TC = TFC + TVC

Since AFC is equal to TFC divided by the quantity, we can calculate the TFC:

TFC = AFC * Quantity

We are given that the quantity produced is 50 units, so we can calculate the TFC using the given AFC value:

TFC = 1.300 RO * 50 units = 65 RO

Now, we can substitute the values of TC and TFC into the equation to find TVC:

TC = TFC + TVC

1.400 RO * 50 units = 65 RO + TVC

70 RO = 65 RO + TVC

TVC = 5 RO

Finally, we can calculate the AVC by dividing TVC by the quantity:

AVC = TVC / Quantity

AVC = 5 RO / 50 units

AVC = 0.1 RO per unit

Therefore, the average variable cost (AVC) is 0.1 RO per unit.

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Find one solution to the following equation (it has many solutions, you only need to find one).
(1,4, 3) x (x, y, z) = (8,-2, 0) has solution
(x, y, z) = ______

Answers

Given that (1, 4, 3) x (x, y, z) = (8, -2, 0).We have to find one solution to the following equation.So, (1, 4, 3) x (x, y, z) = (8, -2, 0) implies[4(0) - 3(-2), 3(x) - 1(0), 1(-4) - 4(8)] = [-6, 3x, -33]Hence, (x, y, z) = [8,-2,0]/[(1,4,3)] is one solution, where, [(1, 4, 3)] = sqrt(1^2 + 4^2 + 3^2) = sqrt(26)

As given in the question, we have to find a solution to the equation (1, 4, 3) x (x, y, z) = (8, -2, 0).For that, we can use the cross-product method. The cross-product of two vectors, say A and B, is a vector perpendicular to both A and B. It is calculated as:| i    j    k || a1  a2  a3 || b1  b2  b3 |Here, i, j, and k are unit vectors along the x, y, and z-axis, respectively. ai, aj, and ak are the components of vector A in the x, y, and z direction, respectively. Similarly, bi, bj, and bk are the components of vector B in the x, y, and z direction, respectively.

(1, 4, 3) x (x, y, z) = (8, -2, 0) can be written as4z - 3y = -6          ...(1)3x - z = 0             ...(2)-4x - 32 = -33     ...(3)Solving these equations, we get z = 2, y = 4, and x = 2Hence, one of the solutions of the given equation is (2, 4, 2).Therefore, the answer is (2, 4, 2).

Thus, we have found one solution to the equation (1, 4, 3) x (x, y, z) = (8, -2, 0) using the cross-product method.

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Find the directional derivative of the function at the given point in the direction of the vector v.
f(x, y) = e^x sin y, ( 0,π/3), v = < -6, 8 >

Answers

The directional derivative of the function

[tex]f(x,y)= e^x sin y[/tex]at the point (0, π/3) in the direction of vector v = < -6, 8 > .

The directional derivative of a function at a given point in a given direction is the rate at which the function changes in that direction at that point. It gives the slope of the curve in the direction of the tangent of the curve at that point. The formula for the directional derivative of f(x,y) at the point (a,b) in the direction of vector v =  is given by:

[tex]$$D_{\vec v}f(a,b)=\lim_{h\rightarrow0}\frac{f(a+hu,b+hv)-f(a,b)}{h}$$[/tex]

where [tex]$h$[/tex] is a scalar.

We can re-write the above formula in terms of partial derivatives by taking the dot product of the gradient of[tex]$f$ at $(a,b)$[/tex] and the unit vector in the direction of vector [tex]$\vec v$[/tex].

[tex]u\end{aligned}$$Where $\nabla f$[/tex]

is the gradient of [tex]$f$ and $\vec u$[/tex] is the unit vector in the direction of

[tex]$\vec v$ with $\left\|{\vec u}\right\|=1$[/tex]

Now, let's find the directional derivative of the given function f(x, y) at the point (0,π/3) in the direction of the vector v = < -6, 8 >.The gradient of the function

[tex]$f(x,y)=e^x\sin y$ is given by:$$\nabla[/tex]

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10.In the style rule p {border: 3px double #00F;}, identify
the
selector
declaration
property
value

Answers

In the style rule p {border: 3px double #00F;}, the selector is 'p,' the declaration is 'border: 3px double #00F,' the property is 'border,' and the value is '3px double #00F.'

A CSS declaration includes a selector and one or more properties with values.

In the style rule p {border: 3px double #00F;}, the selector 'p' represents the paragraph element of an HTML document, and the declaration is 'border:

3px double #00F.'The property in this case is 'border,' which creates a border around the paragraph element, and the value is '3px double #00F,'

In this case, all paragraphs in the HTML document would have a 3-pixel blue double border around them. Therefore, the style rule p {border: 3px double #00F;} specifies a border of 3 pixels, with a double line style in blue, for all paragraph elements in the HTML document.

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please solution this question
:01 MINATION 2022-1ST ENEE 3 sinonpala bns dent Name: Question#2 (5 marks): CLO1.2: Boolean Algebra Convert the following function into its full SOP form Stud G(x, y, z) = x + ÿz

Answers

This expression represents the Boolean function G in its full SOP form, where each term represents a combination of inputs that results in a logical 1 output.

Simplify the Boolean expression F = (A + B')' + (C + D')(E + F)'.

To convert the given Boolean function G(x, y, z) = x + ÿz into its full SOP (Sum of Products) form, we first need to apply De Morgan's law to the complement of z. The complement of z, ÿz, can be represented as ¬z or z'.

So, the function G(x, y, z) = x + ÿz can be rewritten as G(x, y, z) = x + ¬z.

Next, we need to expand the function into its full SOP form. The full SOP form represents the function as a sum of all possible product terms. In this case, since we have two variables (x and z), there will be a total of four possible product terms: (x' ˣ y' ˣ z'), (x' ˣ y' ˣ z), (x ˣ y' ˣ z'), and (x ˣ y' ˣ z).

Therefore, the full SOP form of the function G(x, y, z) = x + ÿz is:

G(x, y, z) = (x' ˣ y' ˣ z') + (x' ˣ y' ˣ z) + (x ˣ y' ˣ z') + (x ˣ y' ˣ z).

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Consider the triangle with vertices A(1,0,−1),B(3,−2,0) and C(1,3,3). (a) Find the angle at the vertex B. Express your answer in terms of the arccosine function. Is this angle acute, obtuse, or right?

Answers

To find the angle at vertex B of the given triangle, we can use the dot product and magnitude of vectors. The angle at vertex B is found to be arccos(-2/√35), which is an obtuse angle.

To find the angle at vertex B, we need to consider the vectors AB and BC formed by the vertices of the triangle.

Vector AB = B - A = ⟨3-1, -2-0, 0-(-1)⟩ = ⟨2, -2, 1⟩

Vector BC = C - B = ⟨1-3, 3-(-2), 3-0⟩ = ⟨-2, 5, 3⟩

The dot product of two vectors is given by the formula: A · B = |A| |B| cosθ, where θ is the angle between the vectors.

In this case, the dot product of AB and BC is:

AB · BC = (2)(-2) + (-2)(5) + (1)(3) = -4 - 10 + 3 = -11

The magnitudes of AB and BC are:

|AB| = √(2² + (-2)² + 1²) = √9 = 3

|BC| = √((-2)² + 5² + 3²) = √38

Using the dot product and magnitudes, we can find the cosine of the angle at vertex B:

cosθ = (AB · BC) / (|AB| |BC|)

cosθ = -11 / (3 √38)

The angle at vertex B is given by arccos(cosθ):

angle at B = arccos(-11 / (3 √38))

Since the value of the cosine is negative, the angle is obtuse.

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Use the distributive property to evaluate the following expression: 9(4 + 9) Show your work in your answer. I NEED THE WORK

Answers

The value of the expression 9(4 + 9) using the distributive property is 117.

To evaluate the expression 9(4 + 9) using the distributive property, we need to distribute the 9 to both terms inside the parentheses.

First, we distribute the 9 to the term 4:

9 * 4 = 36

Next, we distribute the 9 to the term 9:

9 * 9 = 81

Now, we can rewrite the expression with the distributed values:

9(4 + 9) = 9 * 4 + 9 * 9

Substituting the distributed values:

= 36 + 81

Finally, we can perform the addition:

= 117

Therefore, the value of the expression 9(4 + 9) using the distributive property is 117.

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Find the area and perimeter of the figure on the coordinate system below.

Answers

The area and perimeter of the shape are 29 units² and 22.6 units respectively.

What is area and perimeter of shape?

The area of a figure is the number of unit squares that cover the surface of a closed figure.

Perimeter is a math concept that measures the total length around the outside of a shape.

Using Pythagorean theorem to find the unknown length

DE = √ 4²+2²

= √ 16+4

= √20

= 4.47 units

AE = √3²+2²

AE = √9+4

= √13

= 3.6

AB = √ 3²+1²

AB = √ 9+1

AB = √10

AB = 3.2

BC = √ 6²+2²

BC = √ 36+4

BC = √40

BC = 6.3

Therefore the perimeter

= 6.3 + 3.2+ 3.6 +4.5 +5

= 22.6 units

Area = 1/2bh + 1/2(a+b) h + 1/2bh

= 1/2 ×6 × 2 ) + 1/2( 7+6)3 + 1/2 ×7×1

= 6 + 19.5 + 3.5

= 29 units²

Therefore the area of the shape is 29 units²

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Find the number of units that must be produced and sold in order to yield the maximum profit given the equations below for reve R(x)=6xC(x)=0.01x2+1.3x+20​ A. 365 units B. 470 units C. 730 units D. 235 units

Answers

Therefore, to yield the maximum profit, 235 units must be produced and sold.

To find the number of units that must be produced and sold in order to yield the maximum profit, we need to consider the profit function. The profit function is given by subtracting the cost function from the revenue function.

Given:

Revenue function R(x) = 6x

Cost function [tex]C(x) = 0.01x^2 + 1.3x + 20[/tex]

The profit function P(x) is obtained by subtracting the cost function from the revenue function:

P(x) = R(x) - C(x)

[tex]= 6x - (0.01x^2 + 1.3x + 20)[/tex]

To find the maximum profit, we need to determine the value of x that maximizes the profit function P(x). We can do this by finding the critical points of P(x) and evaluating their second derivatives.

Taking the derivative of P(x) with respect to x:

P'(x) = 6 - (0.02x + 1.3)

Setting P'(x) equal to 0 and solving for x:

6 - (0.02x + 1.3) = 0

0.02x = 4.7

x = 235

To determine whether x = 235 corresponds to a maximum or minimum, we can take the second derivative of P(x).

Taking the second derivative of P(x) with respect to x:

P''(x) = -0.02

Since the second derivative P''(x) is negative for all x, the critical point x = 235 corresponds to a maximum.

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OS QUESTION
Explain how the semaphore solve the Reader/Writer problem (Note:
define all the used variables and its initial values).

Answers

Semaphore is a data type used in process synchronization. The semaphore is utilized to address the critical section issue in concurrent programming.

The issue of reader-writer may be resolved using a semaphore.Let us understand the solution to the reader-writer issue with semaphores with the help of variables and their initial values used in the solution:Semaphore mutex (mutual exclusion): This is a variable that is initially set to 1. It provides mutual exclusion by making sure that just one writer or reader can enter the critical section at any given moment.Semaphore wrt (writer's semaphore): This is a variable that is initially set to 1. This variable is used to provide mutual exclusion among authors. If there are writers in the critical section, then no readers are allowed.

Semaphore readcnt (reader's semaphore): This is a variable that is initially set to 0. It keeps track of the number of readers in the critical section. If readers are in the critical section, then no writers are allowed.Now let's understand how to solve the reader-writer problem using semaphore. Here are the steps for the same:When a writer wants to enter the critical section, it should check the wrt semaphore value. If the value is 1, the writer may enter the critical section; else, the writer will wait until the value of wrt becomes

1. Then the writer should acquire the mutex semaphore to enter the critical section and release the mutex semaphore when leaving the critical section.When a reader wants to enter the critical section, it should acquire the mutex semaphore.

The readcnt variable is incremented and checked if it's 1. If it is 1, then the wrt semaphore value is changed to 0, indicating that no other writers can enter the critical section. After that, the mutex semaphore is released. If multiple readers are already in the critical section, then other readers will also be allowed in the critical section without acquiring the mutex semaphore.

When the reader is done with its job, it acquires the mutex semaphore, decrements the readcnt variable, and checks if it is 0. If it is 0, then the wrt semaphore is set to 1, indicating that writers can now enter the critical section. The mutex semaphore is then released.

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After preparing and posting the closing entries for revenues and expenses, the income summary account has a debit balance of $23,000. The entry to close the income summary account will be: Debit Owner Withdrawals $23,000; credit Income Summary $23,000. Debit Income Summary $23,000; credit Owner Withdrawals $23,000. Debit Income Summary $23,000; credit Owner Capital $23,000. Debit Owner Capital $23,000; credit Income Summary $23,000. Credit Owner Capital $23,000; debit Owner Withdrawals $23,000

Answers

The correct entry to close the income summary account with a debit balance of $23,000 is:

Debit Income Summary $23,000; credit Owner Capital $23,000.

This entry transfers the net income or loss from the income summary account to the owner's capital account. Since the income summary has a debit balance, indicating a net loss, it is debited to decrease the balance, and the same amount is credited to the owner's capital account to reflect the decrease in the owner's equity due to the loss.

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A mechanical system having input fa(t) and output y=x₂ is governed by the following differential equations: mx₁ + ₁x₁ + (K₁ + K₂)X₁ - K₂X₂=fa(t) (1) (2) b₂x₂ + (K₂ + K3)x₂ - K₂X1 = 0 Please answer the below questions. Show all work. Please take a picture or scan your work and upload it as a single file. d Question 1. Determine the input-output equation for the output y=x2 using the operator p = dt Question 2. Use Equations (1) and (2) to construct a block diagram for the dynamic system described by the above equations.

Answers

Question 1The input-output equation for the output y = x2 can be determined by taking Laplace Transform of the given differential equations: mx₁ + ₁x₁ + (K₁ + K₂)X₁ - K₂X₂ = fa(t)                            

(1) b₂x₂ + (K₂ + K3)x₂ - K₂X1 = 0                                                      

.(2) Taking Laplace Transform on both sides, we have;LHS of (1)

=> [mx₁ + ₁x₁ + (K₁ + K₂)X₁ - K₂X₂]

⇔ mX₁p + X₁

⇔ [m + p]X₁and RHS of (1)

=> [fa(t)]

⇔ F(p)Similarly,LHS of (2)

=> [b₂x₂ + (K₂ + K3)x₂ - K₂X1]

⇔ b₂X₂p + X₂

⇔ [b₂p + K₂]X₂RHS of (2)

=> [0] ⇔ 0

Hence, we have;[m + p]X₁ + (K₁ + K₂)X₁ - K₂X₂

= F(p)    

(3)[b₂p + K₂]X₂ = [m + p]X₁      

(4)Now, Solving (4) for X₂, we have;

X₂ = [m + p]X₁/[b₂p + K₂]     .(

5)Multiplying (5) by p gives;

pX₂ = [m + p]pX₁/[b₂p + K₂]    

(6)Substituting (6) into (3), we have;

[m + p]X₁ + (K₁ + K₂)X₁ - [m + p]pX₁/[b₂p + K₂] =

F(p)Now, Solving for X₁, we have; X₁

= F(p)[b₂p + K₂]/[D], where D

= m + p + K₁[b₂p + K₂] - (m + p)²

Hence, the Input-output equation for the output y

=x2 is given by;Y(p) = X₂(p) = [m + p]X₁(p)/[b₂p + K₂]    

(7)Substituting X₁(p), we have;Y(p)

= [F(p)[m + p][b₂p + K₂]]/[D],

where D

= m + p + K₁[b₂p + K₂] - (m + p)²

The block diagram for the dynamic system described by the above equations can be constructed using the equations as follows;[tex] \begin{cases} mx_{1} + \dot{x}_{1} + (K_{1}+K_{2})x_{1} - K_{2}x_{2}

= f_{a}(t) \\  b_{2}x_{2} + (K_{2}+K_{3})x_{2} - K_{2}x_{1}

= 0 \end{cases}[/tex]

Taking Laplace Transform of both equations gives:

[tex] \begin{cases} (ms + s^{2} + K_{1}+K_{2})X_{1} - K_{2}X_{2}

= F_{a}(s) \\  b_{2}X_{2} + (K_{2}+K_{3})X_{2} - K_{2}X_{1}

= 0 \end{cases}[/tex]

Rearranging and Solving (2) for X2, we have;X2(s)

= [ms + s² + K1 + K2]/[K2 + b2s + K3] X1(s)        ..............

(8)Substituting (8) into (1), we have;X1(s)

= [1/(ms + s² + K1 + K2)] F(p)[b2s + K2]/[K2 + b2s + K3].

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(help asap?)


The Sisyphus monastery is on a hill, and every day donkeys climb the hill

carrying water from the well in the valley. There are many donkeys, and they leave the well (at the bottom of the hill) every 15 minutes. They take one hour to climb the hill, 10 minutes to unload their water, and then half an hour to return to the well.

When a donkey goes uphill carrying water, in the middle of the day, how many does it pass coming down?


A container ship is overtaking an oil tanker on the way out of Harwich

Harbor, and the first mate notices that if he starts walking from the front of the container ship when the two ships start overlapping, he reaches the back as the two ship separate. He walks at 3 km/hour.

If the container ship is 100 m long, and travelling at 12 km/hour, how long is the oil tanker?

Answers

Since it takes one hour for a donkey to climb the hill, 10 minutes to unload, and half an hour to return to the well, the total time for a round trip is 1 hour + 10 minutes + 30 minutes = 1 hour and 40 minutes.

Since the donkeys leave the well every 15 minutes, in one hour and 40 minutes, there are 100 minutes. Therefore, the number of donkeys passing the middle point during this time is 100 minutes / 15 minutes = 6.67.

Since we cannot have a fraction of a donkey, we round down to the nearest whole number. Thus, the donkey going uphill carrying water passes 6 donkeys coming down.

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Evaluate limx→[infinity]x(π−2tan−¹ (2x)).

Answers

The limit of x times the expression π - 2tan^(-1)(2x) as x approaches infinity is infinity.

To evaluate the limit, let's simplify the expression inside the parentheses first. The arctangent function, tan^(-1)(2x), approaches π/2 as x approaches infinity because the tangent of π/2 is undefined. Therefore, the expression inside the parentheses, π - 2tan^(-1)(2x), approaches π - 2(π/2) = π - π = 0 as x approaches infinity.

Now, multiplying this expression by x, we have x * 0 = 0. Thus, the limit of x times π - 2tan^(-1)(2x) as x approaches infinity is 0.

However, this is not the correct answer. Upon closer inspection, we notice that the expression π - 2tan^(-1)(2x) actually approaches 0 at a slower rate than x approaches infinity. This means that when we multiply x by an expression that tends to approach 0, the result will be an indeterminate form of ∞ * 0. In such cases, we need to use additional techniques, such as L'Hôpital's rule or algebraic manipulation, to determine the limit. Without further information, it is not possible to provide a definitive evaluation of the limit.

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Spongebob, Mr. Krabs, and Patrick invest in the Krusty Krab at a ratio of 6:15:4, respectively. The total amount invested is $175000

Answers

To find the amount each person invested, we need to divide the total amount invested by the sum of the ratio's parts (6 + 15 + 4 = 25). Then, we multiply the result by each person's respective ratio part.

Total amount invested: $175,000

Ratio parts: 6 + 15 + 4 = 25

Amount invested by Spongebob: (6/25) * $175,000 = $42,000

Amount invested by Mr. Krabs: (15/25) * $175,000 = $105,000

Amount invested by Patrick: (4/25) * $175,000 = $28,000

Therefore, Spongebob invested $42,000, Mr. Krabs invested $105,000, and Patrick invested $28,000 in the Krusty Krab.

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Given that the juniors in a class is given by:
{ Cheick,Hu,Latasha,Salomé,Joni,Patrisse,Alexei}
How many ways are there to choose a subset of these juniors?

Answers

There are 128 ways to choose a subset from the given set of juniors. Using the concept of power set there are 128 ways.

To calculate the number of ways to choose a subset from a set, we can use the concept of the power set. The power set of a set is the set of all possible subsets of that set. For a set with n elements, the power set will have 2^n subsets.

In this case, the given set of juniors has 7 elements: {Cheick, Hu, Latasha, Salomé, Joni, Patrisse, Alexei}. Thus, the number of ways to choose a subset is 2^7 = 128.

Therefore, there are 128 different ways to choose a subset from the given set of juniors.

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Kretz Corporation prepares monthly financial statements and thertore abjusts its accounts at the end of every month, The following information is avalatle for March 2016 . Required: For each of the foliening situations, prepare the aporopriate adjusting entry to be recorded on March 31,2016 . How does this ectry asfect the accounting equation? Do not round intermediate poditive offect) and "NE" for No Entry (or no effect) on the financial statement. a. Krete Corporation takes out a 90-day, 7%, $24,000 note on tharch 1,2016 , with interest and prindpal to be paid at maturity: Atrome a 360-day veat. fortherat roten Vy west All adjusting entries imolve either an aasic of a liability and tither a revenee of an expensed on hand of the end of Harch indicates a balance of 11,390 . methed of degredation. 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Must continue to use the percentage tablesd. Cannot continue to use the percentage tables. For the year of the adjustment and the remaining recovery period, one must figure the depreciation themself using the property's adjusted basis at the end of the year Find the second-order partial derivatives of the function. Show that the mixed partlal derivativesfxyandfyxare equal. the problem of under enrollment refers to indian school children who Imagine that there are only two nations in the world, the United States and Mexico. If Americans buy more goods made in Mexico, other things constant, the A. U.S. demand curve for Mexican pesos will shift rightward B. U.S. demand curve for Mexican pesos will shift leftward C. U S. supply curve of Mexican pesos will shift leftward D.U.S. supply curve of Mexican pesos will shift rightward In Windows Server 2016, which of the following refers to thestandard installation with the GUI interface?Group of answer choicesWindows Server 2016 with Desktop ExperienceWindows Server 2016 Serve A quasar is now thought to beSelect one:a. the central core of an active galaxy.b. a very active, very distant star.c. a long-lived supernova explosion.d. a nearby star, ejected with great violence out of a galaxy. Gregs Bicycle Shop has the following transactions related to its top-selling Mongoose mountain bike for the month of March 2015. Greg's Bicycle Shop uses a periodic inventory system.Date Transactions Units Cost per Unit Total CostMarch 1 Beginning inventory 20 $240 $4,800March 5 Sale ($380 each) 15 March 9 Purchase 10 $260 $2,600March 17 Sale ($430 each) 8 March 22 Purchase 10 $270 $2,700March 27 Sale ($455 each) 12 March 30 Purchase 7 $290 $2,030Total: $12,1301. Calculate ending inventory and cost of goods sold at March 31, 2015, using the specific identification method. The March 5 sale consists of bikes from beginning inventory, the March 17 sale consists of bikes from the March 9 purchase, and the March 27 sale consists of four bikes from beginning inventory and eight bikes from the March 22 purchase.2. Using FIFO, calculate ending inventory and cost of goods sold at March 31, 2015.3. Using LIFO, calculate ending inventory and cost of goods sold at March 31, 2015.4. Using weighted-average cost, calculate ending inventory and cost of goods sold at March 31, 2015.5. Calculate sales revenue and gross profit under each of the four methods. (Round weighted-average cost amounts to 2 decimal places.) FILL THE BLANK.the sum of moments about the x axis must include _______ and will allow ________to be determined. explain whether you agree with the following statement the counterculture was a form of protest explain how a proprietary company rise financial to expand its operations.what i s the main aim of corporate insolvency processes and explain in detail one of the insolvency processes Assume thatlimx1f(x)=4,limx1g(x)=3andlimx1h(x)=5. Find the following limits. (1)limx1 2f(x)+4g(x)/3h(x)(2)limx1 f2(x)g(x)(3)limx1[(x2+1)g(x)+(x+1)2h(x)]. The price elasticity of demand for health care is approximately:______ I have 2 questions regarding this question if the answer was to be constant velocity what would change about the definition in the question?what would be the average velocity definition?The slope at a point on a position-versus-time graph of an object is the A. Object's speed at that point. B. Object's average velocity at that point. C. Object's instantaneous velocity at that point. D. Object's acceleration at that point. E. Distance traveled by the object to that point. You can consider your writing's. and to determine the most appropriate genre for your writing most fibrous joints are immobile or only slightly mobile.true or false?