An incomplete contingency table is provided. Use this table to complete the following.a. Fill in the missing entries in the contingency table. b. Determine ​P(Upper C 1​), ​P(Upper R 2​), and ​P(Upper C 1 ​& Upper R 2​). c. Construct the corresponding joint probability distribution. Upper C 1 Upper C 2 Total Upper R 1 4 12 Upper R 2 8 Total 30 a. Complete the contingency table. Upper C 1 Upper C 2 Total Upper R 1 4 8 12 Upper R 2 10 8 18 Total 14 16 30 ​(Type whole​ numbers.) b. Find each probability. ​P(Upper C 1​)equals nothing ​(Type an integer or decimal rounded to two decimal places as​ needed.) ​P(Upper R 2​)equals nothing ​(Type an integer or decimal rounded to two decimal places as​ needed.) ​P(Upper C 1 ​& Upper R 2​)equals nothing ​(Type an integer or decimal rounded to two decimal places as​ needed.) c. Complete the joint probability distribution. Upper C 1 Upper C 2 Total Upper R 1 nothing nothing nothing Upper R 2 nothing nothing nothing Total nothing nothing nothing ​(Type integers or decimals rounded to two decimal places as​ needed.)

The oscillator frequency is 0.5 MHz (megahertz).

In digital electronics, an oscillator is a circuit that generates a continuous and repetitive waveform at a specific frequency.

This frequency is usually determined by the machine cycle, which is the time it takes for a single machine cycle to execute in a computer system.

The oscillator frequency can be calculated as the reciprocal of the machine cycle time.

If the machine cycle is given as 2 μs (microseconds), then the oscillator frequency is:

f = 1 / T

where T is the machine cycle time.

Substituting the given value of T, we get:

f = 1 / (2 μs)

To simplify this expression, we can convert microseconds to seconds by dividing by [tex]10^6:[/tex]

[tex]f = 1 / (2 \times 10^-6 s)[/tex]

Simplifying further, we get:

[tex]f = 0.5 \times 10^6 Hz[/tex]

Therefore, the oscillator frequency is 0.5 MHz (megahertz).

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We need to use at least 21168 terms of the series to estimate its value with an error at most 0.000001.

Explanation: -

To estimate the value of the convergent series ∑n=1[infinity] 2 n^(-1.1) with an error at most 0.000001, we need to use a partial sum that is close enough to the actual value of the series.

One way to approach this is to use the error bound formula for a convergent series:

|S - Sn| ≤ a_n+1/(1 - r),

where S is the actual sum of the series, Sn is the sum of the first n terms of the series, an+1 is the (n+1)th term of the series, and r is the common ratio (in this case, r = 1/2^(1.1)).

We want to find the value of n such that the error |S - Sn| is at most 0.000001.

Plugging in the given values, we get:

0.000001 ≤ 2(n+1)^(-1.1)/(1 - 1/2^(1.1))

Solving for n using a calculator or computer algebra system, we get n ≈ 21168.

Therefore, we need to use at least 21168 terms of the series to estimate its value with an error at most 0.000001.

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Answer:

Every day, 33% of locusts are added to the locust population

The distance travelled by the jet in 25 minutes found using area covered under the graph is 3.7 miles.

What is area?

The size of a surface or the area that any two-dimensional object or figure covers is known as its area.

Area of triangle = [tex]\frac{bh}{2}[/tex]

Area of rectangle=l x w

The area covered under graph= area of triangle+ area of rectangle

                                                   = [tex]\frac{bh}{2}[/tex] + l x w

Dimension of triangle:

base(time on x-axis)=5 seconds

height(speed on y-axis)= 600 miles per hour

                                      =600÷3600 miles per seconds

                                       =0.167 miles per seconds

Dimensions of rectangle:

length(time on x-axis):25-5 =20 seconds

width(speed on y-axis)= 600 miles per hour

                                      =600÷3600 miles per seconds

                                       =0.167 miles per seconds

Distance = The area covered under graph

              = area of triangle+ area of rectangle

               = [tex]\frac{bh}{2}[/tex] + l x w

               =[tex]\frac{5(0.167)}{2}[/tex] + 20(0.167)

               =0.4175 + 3.34

                =3.7575

Distance ≈3.7 miles

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The derivative of x = 2 of the given function its value is -13/4.

To query the result of a function at x = 2, we must first use the division rule. The quotient law is a formula that calculates the derivative of a function that can be expressed as the quotient of two functions. Let

f(x) = h(x) and g(x) = x. We can express the function h(x)/x as f(x)/g(x). Now we can use the quotient rule like this:

d/dx(h(x)/x)) = d/dx(f(x)/g(x))

= [( g(x) * f '(x) )) - (f(x) * g'(x))] / (g(x))^2

= [(x * h'(x)) - (h (x) * 1) ] / x ^2

Now we can put the values ​​given as x = 2 and h(2) = 9 and h'(2) = -2 into the formula:

d /dx(h(x)/ x) ) x = 2 = [ (2 * (-2)) - (9 * 1)] / 2^2

= (-4 - 9) / 4

= -13/4

Therefore, the derivative of x = 2 of the given function its value is -13/4.

That is, the function h(x) / x has a change of -13/4 at x = 2, so if we make a small change in x around x = 2, the function h(x ) / x changes units at x for each of 13 There is a /4 unit reduction. The negative sign indicates that the function decreases at x = 2; this is based on the fact that the number h(x) decreases less than the number x as x approaches 2.

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Factors (1) x² - 11x + 28 = (x-4)(x-7), (2) 2x² + 8x + 6 = 2(x+1)(x+3), (3) k² - 25 = (k+5)(k-5), (4) a² - 9a + 20 = (a-5)(a-4), (5) 7x² - 11x - 6 = (7x+2)(x-3) , (6) 14x² - 52x + 30 = 2(7x-3)(x-5), (7) 6n³ - 8n² + 3n - 4 = (2n-1)(3n²-2n+4), (8) 15y³ - 3v² + 20v - 4 = (5y-1)(3y²+1)(4-v)

Factorization is a process of finding the factors of a given mathematical expression, which can be a number, polynomial, or algebraic expression. In other words, factorization involves breaking down a mathematical expression into simpler terms that multiply together to give the original expression. For example, the factors of the expression x^2 - 4 are (x + 2)(x - 2).

In algebra, factorization is an important tool for solving equations and simplifying expressions. By factoring, we can often simplify complex expressions, making them easier to work with and understand. In addition, factorization plays an important role in number theory, where it is used to find prime factors and calculate the greatest common divisor and least common multiple of numbers.

(1) x² - 11x + 28 = (x-4)(x-7)

(2) 2x² + 8x + 6 = 2(x+1)(x+3)

(3) k² - 25 = (k+5)(k-5)

(4) a² - 9a + 20 = (a-5)(a-4)

(5) 7x² - 11x - 6 = (7x+2)(x-3)

(6) 14x² - 52x + 30 = 2(7x-3)(x-5)

(7) 6n³ - 8n² + 3n - 4 = (2n-1)(3n²-2n+4)

(8) 15y³ - 3v² + 20v - 4 = (5y-1)(3y²+1)(4-v)

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Answer:

A: What are the coordinates of point W'?

The coordinates of point W' are (6, 6).

B: What are the coordinates of point V'?

The coordinates of point V' are (6, 2).

maybe i think so

(a) To be a probability density function, f(x) must satisfy two conditions: f(x) ≥ 0 for all x. The total area under the curve of f(x) must be equal to 1.

We have:[tex]f(x) = c/(1 + x^2)[/tex]

For f(x) to be non-negative, we need c > 0. To find the value of c such that the total area under the density function of f(x) is equal to 1, we integrate f(x) from −∞ to +∞ and set the result equal to 1:

∫(−∞ to +∞) f(x) dx = ∫(−∞ to +∞) c/(1 + x^2) dx = cπ = 1

Therefore, c = 1/π, and f(x) = 1/(π(1 + x^2)) is a probability density function.

(b) We want to find [tex]P(−9 < X < 9) for X ~ f(x) = 1/(π(1 + x^2))[/tex]

Using the cumulative distribution function (CDF), we have:

[tex]F(x) = P(X ≤ x) = ∫(−∞ to x) f(t) dt = ∫(−∞ to x) 1/(π(1 + t^2)) dt[/tex]

[tex]= (1/π) tan^−1(x) + (1/2)[/tex]

So, using the CDF, we have:

[tex]P(−9 < X < 9) = F(9) − F(−9) =[/tex] [tex][tan^−1(9)/π + 1/2] − [tan^−1(−9)/π + 1/2][/tex]

=[tex][tan^−1(9) − tan^−1(−9)]/π[/tex]

=[tex](1/π) tan^−1(9/−1)[/tex]

= 0.499 (rounded to three decimal places)

Therefore, P[tex](−9 < X < 9) ≈ 0.499.[/tex]

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The equation to show how to find the product of 1,000,000 and 1,000,000 using scientific notation can be expressed as (10^6 * 10^6).

A number can be written in scientific notation  in a case whereby the number is greater than or equal to 1  however not up to 10 multiplied by a power of 10.

Given that 1,000,000 and 1,000,000 which can be written in scientific notation as 1.0 * 10^6 and 1*10^6, then th product can be written as (10^6 * 10^6) = 10^12.

Hence, the product is 10^12.

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The package weighs 6.86 102 N.

We must apply the formula for the mechanical advantage of a lever in order to get the weight of the crate:

Input force minus output force is the mechanical advantage.

When the weight of the crate acts as the output force and the force supplied to the lever acts as the input force.

If we rearrange the formula, we obtain:

Mechanical advantage times input force equals output force.

Inputting the values provided yields:

Output Force is equal to 3.43 x 2.0 102 N.

Force at output: 6.86 102 N.

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Question: what do negative exponents do?

Answer: (B)

Step-by-step explanation: I believe

The probability that a randomly selected individual does not have the disease but gives a positive result in the screening test is 33.8%.

The probability of having the disease is P(A) = 0.15, so the probability of not having the disease is P(~A) = 1 - P(A) = 0.85.

Using Bayes' theorem:

P(~A|B) = P(B|~A) * P(~A) / [P(B|A) * P(A) + P(B|~A) * P(~A)]

= 0.1 * 0.85 / [0.7 * 0.15 + 0.1 * 0.85]

= 0.338

Therefore, the probability that a randomly selected individual does not have the disease but gives a positive result in the screening test is 0.338, or about 33.8%.

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A) Length A = 5 ft and width B= 4 ft

B) Volume of the water though = 88 [tex]ft^3[/tex]

What is volume?

The space taken up by any three-dimensional solid constitutes a volume, to put it simply. A cube, cuboid, cone, cylinder, or sphere can be one of these solids. Cubic units are used to measure the volume of solids. The volume will be given in cubic metres, for instance, if the dimensions are given in metres.

Here consider the prism plane figure the dotted lines are equal to the width,

Then width B= 8-4 = 4 ft

Length A = 8-3 = 5 ft

B) Now volume of rectangular prism = lwh cubic unit.

Volume of big prism = 8*2*3=48 [tex]ft^3[/tex]

Volume of small prism = 5*4*2 = 40 [tex]ft^3[/tex]

Then Total volume = 48+40 = 88  [tex]ft^3[/tex]

Hence in the rectangular prisms,

A) Length A = 5 ft and width B= 4 ft

B) Volume of the water though = 88 [tex]ft^3[/tex]

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Based on the terms you provided, I can help you identify the true statement(s):

1. As the sample size n increases, the distribution of the sum of the observations approaches a normal distribution.
2. The sample mean varies from sample to sample.
3. If the underlying population is not normal, the Central Limit Theorem (CLT) states that the distribution of the sample mean X approaches a normal distribution as the sample size n increases.
These statements are true. Note that the statement "As the sample size n increases, the variance of the sample mean X also increases" is incorrect, as the variance of the sample mean actually decreases when the sample size increases. Additionally, the statement "The distribution of the mean X is never exactly normal" is not universally true, as the distribution of the mean can be exactly normal under specific circumstances.

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Answer:

A formula that uses one or more previous terms to find the next term is a recursive formula.

Step-by-step explanation:

A recursive formula is a formula that defines any term of a sequence in terms of its preceding term(s).

We need to check the success/failure condition to ensure that the sampling distribution is approximately normal.

For the sampling distribution of S², we need to assume that the population follows a normal distribution in order to convert S² to a chi-square random variable.

To determine how many people we need to sample to reduce the standard deviation of the mean to 2.6, we found n=217.7515.

To use the t-distribution when finding P(Xˉ < some number), we need to assume that the population is normally distributed or approximately normal.

(c) In the Central Limit Theorem for 1 Proportion, we need to check the success/failure condition to ensure that the sampling distribution is approximately normal. This is because the theorem states that as the sample size increases, the sampling distribution of the proportion approaches a normal distribution, provided that the success/failure condition (np ≥ 10 and n(1-p) ≥ 10) is met. This allows us to make valid inferences about the population proportion.

(d) For the sampling distribution of S², we need to assume that the population follows a normal distribution in order to convert S² to a chi-square random variable. This is because the chi-square distribution is derived from the normal distribution, and using it assumes that the underlying population is normally distributed.

(e) To determine how many people we need to sample to reduce the standard deviation of the mean to 2.6 from a sample size of 92 with a standard deviation of 4, we found n=217.7515. Since we cannot sample a partial person, we need to round up to the nearest whole number, which is 218 people.

(f) To use the t-distribution when finding P(Xˉ < some number), we need to assume that the population is normally distributed or approximately normal. This is important because the t-distribution is derived from the normal distribution and is used when estimating population parameters, especially when the sample size is small and the population standard deviation is unknown.

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The simplified expression for f(x+h) is, f(x+h) = x^3 + 3x^2h + 3xh^2 + h^3 - 5x - 5h + 8. This corresponds to option d in your list of choices.

It is given the function f(x) = x^3 - 5x + 8, we want to find f(x+h) and simplify the result.

1. Replace x with (x+h) in the function f(x) = x^3 - 5x + 8.
2. f(x+h) = (x+h)^3 - 5(x+h) + 8

Now, we will simplify the expression,

3. Expand (x+h)^3 using the binomial theorem or by multiplying (x+h) by itself three times: x^3 + 3x^2h + 3xh^2 + h^3
4. Distribute -5 to the terms inside the parenthesis: -5x - 5h
5. Combine the terms obtained in steps 3 and 4 with the constant 8: x^3 + 3x^2h + 3xh^2 + h^3 - 5x - 5h + 8

So, the simplified expression for f(x+h) is,

f(x+h) = x^3 + 3x^2h + 3xh^2 + h^3 - 5x - 5h + 8

This corresponds to option d in your list of choices.

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The leading coefficient of the term with the highest power (6y⁴) is 6.

The degree of the polynomial is 4 because the highest power of y is 4 in the term 6y⁴.

The constant term is 2, which is the term without any variable (y) raised to a power.

The degree of a polynomial is the highest power of its variable. For example, in the polynomial expression 2x³ + 4x² - x + 1, the degree is 3, because the highest power of x is 3.

The given expression is:

4y + 3y³ + 6y⁴ - 3y³ - 7y + 2

To find the coefficient, degree, and constant of this polynomial, we can simplify it by combining like terms:

-4y + (3y³ - 3y³) + 6y⁴ - 7y + 2

= -4y - 7y + 6y⁴ + 2

= 6y⁴ - 11y + 2

Therefore, the coefficient of the term with the highest power (degree) is 6, the degree of the polynomial is 4, and the constant term is 2.

Coefficients:

The coefficient of the term with the highest power (6y⁴) is 6.

The coefficient of the y-term (-11y) is -11.

The coefficient of the constant term (2) is 2.

Degree:

The degree of the polynomial is 4 because the highest power of y is 4 in the term 6y⁴.

Constant:

The constant term is 2, which is the term without any variable (y) raised to a power.

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It can be used to partition the nodes of the graph into two sets. This partition may suggest the existence of two distinct communities or groups within the graph.

To find the second-smallest eigenvalue and its eigenvector for the Laplacian matrix constructed in (1), we need to compute the eigenvalues and eigenvectors of the matrix. Once we have obtained the eigenvalues and eigenvectors, we can sort them in ascending order and select the second-smallest eigenvalue and its corresponding eigenvector.

The Laplacian matrix constructed in (1) is a symmetric matrix, which means that all its eigenvalues are real. The eigenvectors of the Laplacian matrix are orthogonal, which means that they form an orthonormal basis for the space spanned by the rows of the matrix.

Once we have computed the eigenvectors and eigenvalues of the Laplacian matrix, we can use them to partition the nodes of the graph into two sets. The partition is obtained by splitting the nodes based on the sign of the components of the eigenvector corresponding to the second-smallest eigenvalue. If the components are positive, we assign the nodes to one set, and if the components are negative, we assign them to the other set.

The partition suggested by the second-smallest eigenvalue and its eigenvector can give us insight into the structure of the graph. For example, if the graph is a community graph, the partition may suggest the existence of two distinct communities within the graph. If the graph is a social network, the partition may suggest two groups of people with different interests or affiliations.

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The MLE for u is the sample mean and the MLE for 02 is the sample variance.

To find the maximum likelihood estimators (MLEs) for both u and 02, we need to first write down the likelihood function.

The likelihood function for a normal distribution with unknown mean u and unknown variance 02 is given by:

L(u,02|X1,X2,...,Xn) = (2π02)^(-n/2) exp[-1/(2*02) Σ(Xi-u)^2]

Taking the natural logarithm of the likelihood function, we get:

log L(u,02|X1,X2,...,Xn) = -n/2 log(2π02) - 1/(2*02) Σ(Xi-u)^2

To find the MLE for u, we differentiate the log likelihood function with respect to u and set it equal to zero:

d/d u log L(u,02|X1,X2,...,Xn) = 1/(2*02) Σ(Xi-u) = 0

Solving for u, we get:

u = ΣXi / n

Therefore, the MLE for u is simply the sample mean.

To find the MLE for 02, we differentiate the log likelihood function with respect to 02 and set it equal to zero:

d/d(02) log L(u,02|X1,X2,...,Xn) = -n/(2*02) + 1/(2*02^2) Σ(Xi-u)^2 = 0

Solving for 02, we get:

02 = Σ(Xi-u)^2 / n

Therefore, the MLE for 02 is simply the sample variance.

In summary, the MLE for u is the sample mean and the MLE for 02 is the sample variance.

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Answer:

3x=12

divide boths by the coefficient of x

and x= 4

The volume of the empty portion of container B is 6104.2 ft³(nearest tenth)

A word problem in maths is a maths question written as one sentence or more. This statements are interpreted into mathematical equation or expression.

volume of empty space in container B = volume of B - volume of A

volume of A = πr²h

= 3.14 × 12² × 18

= 8138.88ft³

volume of B = πr²h

= 3.14 × 18² × 14

= 14243.04ft³

Therefore volume of empty space in B = 14243.04 - 8138.88

= 6104.2 ft³(nearest tenth)

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8 is the value of x in parallel lines.

With an example, what is a parallel line?

Two lines in the same plane that are equally spaced apart and never meet are known as parallel lines in geometry. They can be either vertical or horizontal.

                      Examples of parallel lines in our everyday lives include zebra crossings, notebook lines, and railway tracks all around us. No matter how far apart they are on either side, two lines on the same plane are considered parallel if they never cross.

given

      m ║n

 8x - 10 + 126 = 180°

  8x + 116 = 180°

  8x  = 180° - 116

    8x = 64

      x = 64/8

       x = 8

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Based on the provided image, it appears that the distribution is skewed to the right. This is indicated by the fact that the tail of the distribution extends further to the right than to the left, and the majority of the data points are concentrated on the left side of the distribution. Therefore, the answer would be B, it is skewed.

Answer: You would need to hold a membership for at least 17 months.

Step-by-step explanation:

The total number of prizes awarded in a year for each member is given by:

Monthly prizes = 12 x (1 + 1 + 1) = 36

Annual prizes = 2

Therefore, the total number of prizes awarded in a year is 38.

The probability of not winning any prize in a given month is (197/200) * (196/199) * (195/198) = 0.942

Therefore, the probability of winning at least one prize in a given month is 1 - 0.942 = 0.058.

The probability of not winning any prize in 12 months is (0.942)^12 = 0.399

Therefore, the probability of winning at least one prize in 12 months is 1 - 0.399 = 0.601.

To be confident of winning at least one prize, we want the probability to be greater than 0.5.

So, we want (1 - 0.942)^n < 0.5, where n is the number of months of membership.

Solving for n gives n > 16.4, which means we need to hold a membership for at least 17 months to be confident of winning at least one prize.

a. To find the value of c, we need to ensure that the total area under the density function is equal to 1. Therefore, the variance is: Var(Y) =[tex]0.129 - (0.307)^2[/tex] ≈ 0.051 and the standard deviation is: SD(Y) = [tex]\sqrt{Var(Y) ≈ 0.226}[/tex]

Therefore, we need to solve for c:[tex]∫0^1 cy^2(1-y)^4 dy = 1[/tex]

Using integration by parts and simplifying, we get:

Therefore, the density function is:[tex]f(y) = 252y^2(1-y)^4, 0 < y < 1[/tex]

[tex]f(y) = 0[/tex], elsewhere.

b. To find E(Y), we use the formula:[tex]E(Y) = ∫0^1 yf(y) dy[/tex]

Substituting the density function, we get:[tex]E(Y) = ∫0^1 252y^3(1-y)^4 dy[/tex]

This integral is not easy to solve analytically, so we use numerical integration. Using a calculator or software, we get:[tex]E(Y) ≈ 0.307[/tex]

c. To find the standard deviation of Y, we first need to find the variance:

[tex]Var(Y) = E(Y^2) - [E(Y)]^2[/tex]

To find, we use the formula:[tex]E(Y^2) = ∫0^1 y^2 f(y) dy[/tex]

Substituting the density function, we get: [tex]E(Y^2) = ∫0^1 252y^4(1-y)^4 dy[/tex]

Again, we use numerical integration to get:[tex]E(Y^2) ≈ 0.129[/tex]

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The coefficients on both sides of the equation do not match, hence the given integro-differential equation cannot have a solution.

a). ƒ(t) = inverse Laplace transform of ƒ(s) = 1/55

b). y(t) = ƒ(t).

c). There is no answer to the given equation.

A mathematical statement that establishes the equality of two expressions is known as an equation. It can be used to find a desired unknown quantity and is commonly written using symbols and numbers. Equations are useful for solving a wide range of issues as well as for describing links between various physical and chemical processes. Along with numerous other scientific and mathematical disciplines, programming is another area where equations are used.

Utilising Laplace transforms, the given integro-differential equation can be solved,

Let ƒ(t) = Laplace transform of ƒ(t).

Then,

(1) + (1 - 55°(E)) dě = 1

⇒ (1) + (1 - 55ƒ(s)) ƒ(s) = 1

⇒ ƒ(s) = [1 + (1 - 55ƒ(s)]/55

⇒ ƒ(s) = 1/55

Therefore, ƒ(t) = inverse Laplace transform of ƒ(s) = 1/55

The integro-differential equation is transformed into an initial value issue.

Let y(t) = ƒ(t).

Then,

(1) + (1 - 55°(E)) dě = 1

(1) + (1 - 55y(t)) y′(t) = 1

Considering t differently for each side,

y′′(t) = (1 - 55y(t))/55

Differentiating again,

y′′′(t) = -55y′(t)/55

Differentiating once more,

y(4)(t) = -55y′′(t)/55

We require four beginning values to solve this fourth order differential equation because of its complexity. Therefore,

y(0) = 0, y′(0) = 0, y′′(0) = 0, y′′′(0) = 1

c).The starting value problem's resolution

By varying the settings, we can use this strategy to address the initial value problem.

Let y1(t) = e2t, y2(t) = te2t, y3(t) = t2e2t, y4(t) = t3e2t.

Then,

y′1(t) = 2e2t, y′2(t) = e2t + 2te2t, y′3(t) = 2te2t + t2e2t, y′4(t) = 3t2e2t + t3e2t

y′′1(t) = 4e2t, y′′2(t) = 2e2t + 4te2t, y′′3(t) = 4te2t + 2t2e2t, y′′4(t) = 6t2e2t + 3t3e2t

y′′′1(t) = 6e2t, y′′′2(t) = 2e2t + 6te2t, y′′′3(t) = 6te2t + 2t2e2t, y′′′4(t) = 12t2e2t + 3t3e2t

By including these in the calculation,

[6e2t + 2e2t + 6te2t] + [-55(e2t + 2te2t + t2e2t + t3e2t)] = 1

8e2t + (-55te2t - 110t2e2t - 55t3e2t) = 1

Putting like terms' coefficients on both sides in equal amounts,

8 + (-55) = 1

-47 = 1

This cannot be done. As a result, the following equation cannot be solved.

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Answer: 410

Step-by-step explanation: 2870/7 = 410