help on this of math

Surface Area of cuboid = 2 (lb + bh + hl)

According to the question :

length = x, width = x-5, height = 0.5x

250 = 2 ( x × (x-5) + (x-5) × 0.5x + 0.5x × x )

250 = 2 ( x² - 5x + 0.5x² - 2.5x + 0.5x²)

250 = 2 ( x² - 5x + x² - 2.5x )

250 = 2 ( 2x² - 7.5x )

250 = 4x² - 15 x

4x² - 15x -250 = 0

Jaden's questions about the missing students influence the development of the plot in many ways.

Number is a mathematical object used to count, measure, and label. It is one of the most fundamental concepts in mathematics and is used in all areas of mathematics, including algebra, geometry, calculus, and statistics. Numbers are used to represent quantities and can be represented in a variety of ways, such as numerals, symbols, words, and graphs. Numbers can be used to measure and compare objects, define relationships between objects, and help solve problems.

Firstly, they cause the Puppetmaster to challenge her curiosity. The mysterious disappearances of the students compel the Puppetmaster to find out why they have gone missing, and to take measures to ensure that no one else goes missing. This encourages the Puppetmaster to become more involved in the game, and creates tension between her and the other players.

Secondly, Jaden's questions emphasize the close connection between the players and the Puppetmaster. The players rely on the Puppetmaster for guidance and safety, and her actions in response to Jaden's questions demonstrate her commitment to the players' wellbeing. This serves to strengthen the bond between the players and the Puppetmaster.

Thirdly, Jaden's questions persuade the teachers to begin a search for the missing students. By raising awareness of the situation, Jaden encourages the teachers to take action to investigate the disappearances and to protect the remaining students.

Finally, Jaden's questions highlight the entertainment value that the game provides each player. Her questions demonstrate her enthusiasm for the game, which encourages the other players to play with greater enthusiasm. This serves to increase the intensity of the game, and to make the game more exciting for all involved.

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Answer:

k=77

steps:

k/11=7

k=7*11

k=77

Answer:

Step-by-step explanation:

[tex]\tt \cfrac{k}{11} =7[/tex]

The opposite of division is multiplication, so we need multiply both sides by 11:-

[tex]\tt \cfrac{k}{11}\times 11 =7\times 11[/tex]

[tex]\tt k=7\times 11[/tex]

[tex]\tt k=77[/tex]

______________________

Hope this helps! :)

Using the equation, we found the following:

1) Expected Population in the year 2014 = 41100

2) Predicted year when the population will reach 54000 = 2020

3) The rate of population changes = 2150

4) The number of years for the population doubled since 2008 =9.12

What is a linear equation?

A mathematical equation is a formula that uses the equals sign to represent the equality of two expressions. An equation is said to be linear if the maximum power of the variable is consistently 1. Another name for it is a one-degree equation. A linear equation with one variable has the conventional form Ax + B = 0. In this case, the variables x and A are variables, while B is a constant.

Given,

the population in 2008 = 28,200

the population in 2012 = 36,800

The population is growing linearly.

Assume a linear equation,

p(x) = 36800 + kx

where,

   p(x) = population

  x = years since 2012.

k = increase in population

p(0) = 36800

p(-4) = 36800 - 4k

28200= 36800 -4k

4k = 36800 - 28200

k = 2150

Then the linear equation becomes,

p(x) = 36800 + 2150x

1) Population in 2014

x = 2014 - 2012 = 2

From the equation,

p(2) = 36800 + 2150 * 2 = 41100

2) x when p(x) = 54000

From the equation,

54000  = 36800 + 2150x

2150x = 17200

x = 8

Year = 2012 + 8 = 2020

3) Rate of population change = (population in 2012 - population in 2008) / number of years = 36800-28200 / 4 = 2150

4) Population doubled since 2008

p(x) = 2 * 28200 = 56400

We have to find x , when p(x) = 56400

Using the linear equation,

56400 = 36800 + 2150x

x = 9.12

Therefore using the equation, we found the following:

1) Expected Population in the year 2014 = 41100

2) Predicted year when the population will reach 54000 = 2020

3) The rate of population changes = 2150

4) The number of years for the population doubled since 2008 =9.12

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Answer:

Step-by-step explanation:

To calculate the present value (PV) and future value (FV) of the cash flow stream, we can use the following steps:

Calculate the present value of each cash flow using the formula:

PV = CF / (1 + r)^n

where CF is the cash flow, r is the annual interest rate, and n is the number of years until the cash flow is received.

For the first three cash flows of $150 at the end of each of the next 3 years, assuming a starting point of Year 0, we have:

PV1 = $150 / (1 + 0.11)^1 = $134.59 (Year 1)

PV2 = $150 / (1 + 0.11)^2 = $120.75 (Year 2)

PV3 = $150 / (1 + 0.11)^3 = $107.99 (Year 3)

For the cash flow of $250 at the end of Year 4:

PV4 = $250 / (1 + 0.11)^4 = $165.14

For the cash flow of $300 at the end of Year 5:

PV5 = $300 / (1 + 0.11)^5 = $179.34

For the cash flow of $500 at the end of Year 6:

PV6 = $500 / (1 + 0.11)^6 = $277.12

Add up the present values of each cash flow to find the present value of the entire stream:

PV = PV1 + PV2 + PV3 + PV4 + PV5 + PV6

PV = $134.59 + $120.75 + $107.99 + $165.14 + $179.34 + $277.12

PV = $985.93

Therefore, the present value of the cash flow stream is $985.93.

To find the future value of the cash flow stream, we can simply add up the cash flows and then apply the future value formula:

FV = CF x [(1 + r)^n - 1] / r

where CF is the sum of the cash flows, r is the annual interest rate, and n is the number of years from the present until the future value is calculated.

CF = $150 x 3 + $250 + $300 + $500 = $1,100

n = 6 (assuming a starting point of Year 0)

FV = $1,100 x [(1 + 0.11)^6 - 1] / 0.11

FV = $2,525.72

Therefore, the future value of the cash flow stream is $2,525.72.

The centroid of the region is at the point (0, 2/5).

To find the centroid of the region bounded by the curves y=2-x² and y=x, we first need to find the limits of integration and the expressions for the x-coordinate and y-coordinate of the centroid.

The curves intersect at (1,1) and (-1,1), so we will integrate over the interval [-1,1].

To find the x-coordinate of the centroid, we need to evaluate the following integral:

x' = (1/A) ∫[a,b] xf(x) dx

where;

A = ∫[a,b] (f(x) - g(x)) dx

In this case, f(x) = 2 - x² and g(x) = x, so

A = ∫[-1,1] (2 - x² - x) dx

= [2x - (1/3)x³ - (1/2)x²] | from -1 to 1

= (4/3)

Now we can evaluate the x-coordinate of the centroid:

x' = (1/A)∫[-1,1] x*(2-x²-x) dx

= (1/(4/3))∫[-1,1] (2x - x³ - x²) dx

= (3/4) [(x²/2) - (1/4)x⁴ - (1/3)x³] | from -1 to 1

= 0

So the x-coordinate of the centroid is 0.

To find the y-coordinate of the centroid, we need to evaluate the following integral:

y' = (1/A) ∫[a,b] (1/2) [f(x)² - g(x)²] dx

y' = (1/(4/3)) ∫[-1,1] (1/2)[(2-x²)² - x²] dx

= (3/4)[(8/15)x⁵ - (2/3)x³ + (1/2)x] | from -1 to 1

= (2/5)

So the y-coordinate of the centroid is 2/5.

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The ratio of quarters to the total number of coins is 25:100, or simplified to 1:4.

What is the ratio and proportion ?

A ratio is an ordered pair of numbers a and b, written a / b where b does not equal 0. A proportion is an equation in which two ratios are set equal to each other. For example, if there is 1 boy and 3 girls you could write the ratio as 1 : 3 (for every one boy there are 3 girls).

To find the ratio of quarters to the total number of coins, we need to first calculate the total number of coins.

Total number of coins = number of quarters + number of dimes + number of pennies + number of nickels

Total number of coins = 25 + 20 + 50 + 5

Total number of coins = 100

Therefore, the total number of coins is 100.

The ratio of quarters to the total number of coins is:

Quarters : Total number of coins

= 25 : 100

= 1 : 4

Hence, the answer is option 3. 1/4.

Therefore, the ratio of quarters to the total number of coins is 25:100, or simplified to 1:4.

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Answer:hunger

Step-by-step explanation:

i hungry

Answer:

The product of the matrices A and X is the identity matrix. Therefore, X and A are inverses of each other.

Step-by-step explanation:

Answer: C is less than or equal to 7

Step-by-step explanation: because the numbers of cars are not less nor greater than 7

Answer: 6.5

Step-by-step explanation:

[tex]|-6.5| = 6.5[/tex]

_________

The total amount the mechanic will need in retirement savings to meet their retirement income goa is (B) $950,000, the correct option is B

Simple interest is a method of calculating the interest charge. Simple interest can be calculated as the product of principal amount, rate and time period.

Simple Interest = (Principal × Rate × Time) / 100

We are given that;

Annual gross wage=  $47,500

Percentage saved= 80%

Draw in 1 year=4%

Now,

To calculate the total amount the mechanic will need in retirement savings to meet their retirement income goal, we can follow these steps:

Determine the retirement income goal: The mechanic wants to live off 80% of their current annual gross wage, which is:

0.8 x $47,500 = $38,000 per year

Calculate the amount of savings needed to generate the retirement income: The mechanic wants to draw 4% of their savings in the first year, so the amount of savings needed to generate $38,000 per year is:

$38,000 / 0.04 = $950,000

Therefore, by the given interest rate answer will be $950,000.

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Step-by-step explanation:

a) BD/AD=AB/AC=AD/CD; BD/AB=AB/BC=AD/AC; AD/AB=AC/BC=CD/AC;

b) if BC=2 and DC=10, then it is possbile to write:

BD/AD=AB/AC=AD/10; BD/AB=AB/2=AD/AC; AD/AB=AC/2=10/AC, then

AC/2=10/AC and AC²=20. According to the Pyphagorean's theorem AD²=AC²+CD² and AD=√120≈10.96

The measures of the angles are JKN = 27 degrees and JNK = 126

The complete question is added as an attachment

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

The rectangle

On the rectangle, we have

JKN = NJK

Using the above as a guide, we have the following:

JKN = 27 degrees

Next, we use the sum of angles in a triangle theorem

The sum of angles in a triangle is 180

Mathematically, this is represented as

J + N + K = 180

So, we have the following representation

JNK = 180 - 27 * 2

Evaluate

JNK = 126

Hence, the measure of the angle JNK is 126 degrees

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Xander's ending balance is -$68

Let's start by calculating Xander's balance after each transaction:

Now let's consider the fees and charges:

So the total fees and charges are $20.00 + $15.00 + $1.00 = $36.00.

Therefore, Xander's ending balance is -$32.00 - $36.00 = -$68.00.

So the answer is -$68.00.

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The missing angles inscribed in the circle are

The angles are calculated using the inscribed angle theorem

Inscribed Angle Theorem: The measure of an inscribed angle is half the measure of the intercepted arc.

This is used as follows

∠ C = 52/2 degrees

∠ C = 26 degrees

∠ C = ∠ B = 26 degrees inscribed angle subtended by same arc are equal

∠ BSD + ∠ D + B = 180 degrees sum of angles in a triangle

∠ BSD + 57 + 26 = 180

∠ BSD = 180 - 57 - 26

∠ BSD = 97 degrees

∠ CSE = ∠ BSD vertical angles

∠ CSE = 97 degrees

∠ E = ∠ B = 57 degrees inscribed angle subtended by same arc are equal

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Even though the triangles are all different sizes,the decimal for each ratio are equal.

What is ratio ?

Ratios are commonly used in many different fields, including finance, engineering, and science. They are used to compare quantities or values that are not necessarily in the same units or are not directly comparable.

If the ratios of the corresponding sides of different triangles are equal, then the triangles are said to be similar. In this case, if the ratios of the sides of the different triangles are equal and result in the same decimal value, then it means that the triangles are similar to each other.

When two triangles are similar, it means that their corresponding angles are equal, and the ratios of their corresponding sides are also equal. This is known as the "angle-angle" or "AA" similarity criterion.

Therefore, if the ratios of the sides of different triangles are equal.

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Option A is the correct answer as EF/QR = CE/SQ is not correct, as the triangles contain no vertex C.

Triangles with the same shape but different sizes are said to be similar triangles. Squares with any side length and all equilateral triangles are examples of related objects. In other words, if two triangles are similar, their corresponding sides are proportionately equal and their corresponding angles are congruent.

Although having the same form, each might have different sizes.

There are no matching angles that are not equal.

Similar equivalent side ratios exist.

Given that, EFG and QRS are similar.

We know that for similar triangles the ratio of length of the segments of the corresponding triangle are equal.

Thus, EF/QR = CE/SQ is not correct, as the triangles contain no vertex C.

Hence, option A is the correct answer.

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The True statement is:

All the four function cut the y axis at (0, 3)

The point at which the line or curve crosses the graph's axis is referred to as the intercept. When a point crosses the x-axis, it is referred to as the x-intercept. When a point crosses the y-axis, it is referred to as the y-intercept.

We have Four function

f(x) = 4[tex](2)^x[/tex] -1

g(x) = 3[tex](1/4)^x[/tex]

h(x) = [tex](1/2)^x[/tex] + 2

k(x) = -[tex]3^x[/tex] + 4

We have represented all the graph given below.

First, there is no function whose have negative y intercept.

Only f(x) have negative x intercept.

But all the four function cut the y axis at (0, 3)

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First, we need to find the number of people who went to the pool in the second, third, and fourth weeks.

Number of people in second week = 1,120 - 125 = 995

Number of people in third week = 995 + 145 = 1,140

Number of people in fourth week = 1,140 - 132 = 1,008

To find the percent decrease, we need to find the difference between the number of people in the first week and the fourth week, and then divide by the number of people in the first week.

Difference between first and fourth weeks = 1,120 - 1,008 = 112

Percent decrease = (112/1,120) x 100% = 10%

Therefore, the percent decrease in the number of people who went to the pool over these four weeks is 10%.

The linear equation in this situation is y=20x which will have its solution as per the values of 'x'.

For instance, the cost of a good for a certain amount can be determined using a linear equation.

The linear equation in this situation is y=20x.

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We will make ₹1,048,575 for the month. The solution has been obtained by using the arithmetic operations.

The four basic operations, often referred to as "arithmetic operations", are thought to be able to describe all real numbers. Divide, multiply, add, and subtract are the four mathematical operations that result in the quotient, product, sum, and difference.

We are given that for the first day of each month, a penny is earned. Thereafter, each workday wages will double what they were the day before.

Now, since there are 20 workdays in a month so, the total amount earned is as follows:

⇒ 1 + 2 + 4 + 8 + 16 + 32 + 64 + 128 + 256 + 512 + 1,024 + 2,048 + 4,096 + 8,192 + 16,384 + 32,768 + 65,536 + 131,072 + 262,144 + 524,288

⇒ ₹ 1,048,575

Hence, we will make ₹ 1,048,575 for the month.

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Answer:

(-5, 2)

Step-by-step explanation:

We can see that the g(x) is a translated form of f(x) using the formula:

y = (x - h)³ + k,

where (h, k) is the origin of the graph's translation.

We can assign the following h and k values based on the given g(x):

g(x) = (x + 5)³ + 2

h = -5

k = 2

Finally, we can form an ordered pair (h, k):

(-5, 2)

222 people were influenced by brand.

What is Algebraic expression ?

Algebraic expression can be defined as combination of variables and constants.

To determine how many people were influenced by brand, we need to add up the number of people who said "brand" as one of their influencing factors. However, we need to be careful not to double-count those who selected multiple factors.

Let's start by creating a diagram of the data:

         | Color | Size | Brand | Total

Only      |   5   |  8   |   16  |   29

Color/Size|  20   |  0   |   42  |   62

Size/Brand|   0   |  53  |   42  |   95

All Three |   0   |  0   |  102  |  102

None      |  20   |  20  |   20  |   60

Total     |  45   |  81  |  222  |  348

From this table, we can see that 222 people said that brand influenced their choice of cell phone.

Therefore, 222 people were influenced by brand.

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The quadrilateral is most specifically a D. square, because C. all sides are congruent.

What is a square?

A quadrilateral with four equal edges is called a square. There are numerous items in our environment that have a square form. Equal sides and interior angles that are both 90 degrees distinguish each square form.

A square is a quadrilateral where all sides are congruent and all angles are right angles.

This matches the given description of the figure with 4 vertices, where the diagonal angles are same and all the sides are equal.

Therefore, the correct option for the first blank is D, and the correct options for the second blank is C.

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Answer:

The quadrilateral is most specifically a rhombus because all sides are congruent.

Step-by-step explanation:

From inspection of the given quadrilateral, we can see that:

(This is denoted by the same number of tick marks on each congruent line segment and each congruent angle).

All sides of a square and a rectangle meet at right angles, i.e. their interior angles are congruent. Since the interior angles of the given quadrilateral are not all equal, the figure cannot be a square or a rectangle.

All sides of a rhombus are equal in length, and its opposite angles are congruent. This description matches the given shape. Therefore, the quadrilateral is a rhombus.

√49 is a rational number. √50 is an irrational number. √127 is an irrational number. 125 is a rational number because it is equal to a perfect cube of the whole number 5.

A real number is considered to be irrational if it cannot be written as a simple fraction. It cannot be described using a ratio. When p and q are numbers and q is not identical to 0, N is not equivalent to p/q if N is irrational. An illustration of this is the illogic of the integers

A actual number that's unable to be written as the ratio between two integers—that is, as p/q, where both p and q both are integers—is an irrational number.

√49 is a rational number because it is equal to 7, which is a whole number.

√50 is an irrational number because it cannot be expressed as a fraction of two integers and it is not a perfect square.

√127 is also an irrational number because it cannot be expressed as a fraction of two integers and it is not a perfect square.

125 is a rational number because it can be expressed as 5^3, which is a perfect cube of the whole number 5.

Therefore, the correct statements are:

√49 is a rational number.

√50 is an irrational number.

√127 is an irrational number.

125 is a rational number because it is equal to a perfect cube of the whole number 5.

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The value of x is 54 when measure of arc MLis 76 Degrees and measure of Angle JLK is 54 Degrees.

A circle is a shape consisting of all points in a plane that are at a given distance from a given point, the centre.

Measure of arc ML=76 Degrees and

Measure of Angle JLK = 54 Degrees

We have to find the value of x

O is the centre of the circle.

As we see the figure angle L is corresponding to 54 degrees.

x=54

Hence, the value of x is 54 when measure of arc MLis 76 Degrees and measure of Angle JLK is 54 Degrees.

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A. The price of the bond is $556.25.

B. The yield to maturity expected by investors is 20.36%.

Yield to maturity (YTM) is the total rate of return that will have been earned by a bond when it makes all interest payments and repays the original principal.

here, we have,

A. The price of the bond is calculated using the formula:

P = C × (1 − (1 + YTM/2)−2T ) ÷ (YTM/2) + (1 + YTM/2)−2T

Here, C is the coupon payment, YTM is the yield to maturity and T is the time to maturity in years.

Face value = $1,000

YTM = 8.2%

Time to maturity = 7 years

Coupon payment = 8.2% × $1,000 = $82

Substituting these values in the formula, we get:

P = $82 × (1 − (1 + 0.082/2)−14 ) ÷ (0.082/2) + (1 + 0.082/2)−14

P = $82 × (1 − 0.6774) ÷ 0.041 + 0.6774

P = $556.25

B. The yield to maturity expected by investors is calculated using the formula:

YTM = 2 × (C × (1 + YTM/2)−2T + (FV − P) × (1 + YTM/2)−2T ) ÷ P

Here, C is the coupon payment, YTM is the yield to maturity, FV is the face value of the bond and P is the price of the bond.

Expected face value at maturity = 85% × $1,000 = $850

Substituting these values in the formula, we get:

YTM = 2 × ($82 × (1 + YTM/2)−14 + ($850 − $556.25) × (1 + YTM/2)−14 ) ÷ $556.25

YTM = 2 × ($82 × (1 + YTM/2)−14 + ($293.75) × (1 + YTM/2)−14 ) ÷ $556.25

YTM = 2 × ($82 × 0.6774 + ($293.75) × 0.6774) ÷ $556.25

YTM = 2 × ($55.35 + ($198.57) ) ÷ $556.25

YTM = 2 × $253.92 ÷ $556.25

YTM = 0.2036 = 20.36%

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Answer:

Step-by-step explanation:

We need to divide 8625/1725

I used calculator and got 5.

Kayla has 5 pizzas.

Each pizza has 12 slices so we multiply 5x12.

That is 60.

FAQ:

Why do we multiply 5 by 12?

Answer: Each pizza has 12 slices. If we want to know how many slices 2 pizzas have, we would multiply 12 by 2. The ratio of pizza to slice is 12:1.

Pizza is 12x bigger than individual slice

(I want pizza now)

Answer:

Step-by-step explanation:

To solve the differential equation x^2y'' − 3xy' + 3y = x^4e^x using variation of parameters, we can follow these steps:

Step 1: Find the complementary solution y_c by solving the homogeneous equation:

x^2y'' − 3xy' + 3y = 0

The characteristic equation is r(r-1) - 3r + 3 = 0, which simplifies to r^2 - 4r + 3 = 0. Factoring, we get (r-1)(r-3) = 0, so the roots are r=1 and r=3. Therefore, the complementary solution is:

y_c = c1x + c2x^3

where c1 and c2 are arbitrary constants.

Step 2: Find the particular solution y_p using variation of parameters. We assume that the particular solution has the form:

y_p = u1(x)*y1(x) + u2(x)*y2(x)

where y1 and y2 are solutions to the homogeneous equation (in this case, y1=x and y2=x^3) and u1 and u2 are functions to be determined.

We need to find the derivatives of y1 and y2:

y1' = 1, y1'' = 0

y2' = 3x^2, y2'' = 6x

Substituting into the differential equation and simplifying, we get:

x^2(u1''y1 + u2''y2) + x(u1'y1 + u2'y2) = x^4e^x

Plugging in y1 and y2 and simplifying, we get:

x^2(u1''*x + u2''*x^3) + x(u1'*1 + u2'*3x^2) = x^4e^x

We can write this equation in matrix form as:

[x^2x, x^2x^3] * [u1'', u2''] + [x1, x3x^2] * [u1', u2'] = [0, x^4e^x]

Taking the determinant of the coefficient matrix [x^2x, x^2x^3; x1, x3x^2], we get:

(x^2x)(x3x^2) - (x^2x^3)*x = 2x^4

Therefore, the inverse of the coefficient matrix is:

[3x, -x^3] / (2x^4)

Multiplying by the column vector [0, x^4e^x] gives:

[u1', u2'] = [3x, -x^3] * (1/(2x^4)) * [0, x^4e^x]

Simplifying, we get:

u1' = (3/2)*e^(-x), u2' = -(1/2)xe^(-x)

Integrating u1' and u2' with respect to x, we get:

u1 = -(3/2)*e^(-x), u2 = -(1/2)*xe^(-x) + C

where C is an arbitrary constant.

Therefore, the particular solution is:

y_p = -(3/2)xe^(-x) + Cx^3e^(-x)

where C is an arbitrary constant.

Step 3: The general solution of the differential equation is the sum of the complementary solution and the particular solution:

y = y_c + y_p