A bored college student on top of a 6-story tall building drops a water balloon on his friends directly below. In one second it falls one story down from the top. In one more second it will be:

Answer:

134

Step-by-step explanation

The  absolute maximum value of f(x) on the interval [-3,9] is approximately 1.3 x 10^9 and the absolute minimum value of f(x) on the interval [-3,9] is 0.

To find the absolute maximum and minimum values of the function f(x) = x^8e^(-x) on the interval [-3, 9], we first need to find the critical points and endpoints of the function on the interval.

Taking the derivative of the function, we get:

f'(x) = x^7e^(-x)(8-x)

Setting f'(x) equal to zero, we get critical points at x=0 and x=8. We also need to check the endpoints of the interval, x=-3 and x=9.

Now we need to evaluate the function at these points to find the absolute maximum and minimum values.

f(-3) ≈ 3.3 x 10^5
f(0) = 0
f(8) ≈ 1.3 x 10^9
f(9) ≈ 4.4 x 10^8

Therefore, the absolute maximum value of f(x) on the interval [-3,9] is approximately 1.3 x 10^9 and the absolute minimum value of f(x) on the interval [-3,9] is 0.

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The values of the sides and the angle in the triangle will be:

AB = 15

m∠A = 53.1°

m∠B = 36.9°

It should be noted that a triangle is a three-sided polygon that consists of three edges and three vertices. The most important property of a triangle is that the sum of the internal angles of a triangle is equal to 180 degrees

From the picture attached,

By Applying Pythagoras theorem,

AB² = AC² + BC²

AB² = 9² + (12)²

AB² = 81 + 144

AB = √225

AB = 15

tan(B) = opposite / adjacent

         = 12/9

         = 1.3333

B will be inverse of town (1.333)

  = 53.13

  ≈ 53.1°

Since, m∠A + m∠B + m∠C = 180°

m∠A + 53.1° + 90° = 180°

m∠A = 180°- 143.1°

       = 36.9°

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The probability that the sample mean would be less than 23,013 dollars if a sample of 134 persons is randomly selected is approximately 0.0000397.

We can use the central limit theorem to approximate the distribution of the sample mean as a normal distribution, with a mean of μ = 23,037 dollars and a standard deviation of σ/√n = √(149,769/134) = 33.23 dollars.

Then we can standardize the sample mean using the z-score formula:

z = ([tex]\bar{X}[/tex] - μ) / (σ/√n)

where [tex]\bar{X}[/tex] is the sample mean.

Plugging in the given values, we get:

z = (23,013 - 23,037) / 33.23 ≈ -0.722

Using a calculator, we can find that the probability of getting a z-score less than -0.722 is approximately 0.0000397.

Therefore, the probability that the sample mean would be less than 23,013 dollars if a sample of 134 persons is randomly selected is approximately 0.0000397.

This is a very small probability, indicating that it is unlikely to obtain a sample mean this low if the true population mean is 23,037 dollars.

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Answer:

(−2,5)

Step-by-step explanation:

If you want to find x and y in this system of equations:

2x − 3y = −19

4x + 5y = 17

You can use elimination to get rid of one variable. Here's how:

First, double the first equation so that x has the same coefficient in both equations.

4x − 6y = −38

4x + 5y = 17

Then, subtract the first equation from the second equation to cancel out x and get a new equation with only y .

(4x + 5y) − (4x − 6y) = 17 − (−38)

11y = 55

Next, divide both sides by 11 to find the value of y .

y = 5

Now, plug in y = 5 into any of the original equations and solve for x .

2x − 3(5) = −19

2x = −4

x = −2

Finally, check that (−2,5) is the correct solution by substituting x = −2 and y = 5 into both original equations.

2(−2) − 3(5) = −19

−19 = −19

4(−2) + 5(5) = 17

17 = 17

So, the answer is (−2,5).

To find the solution for this system of equations, we can use either substitution or elimination method.

1. Multiply the first equation by 5 and the second equation by 3 to eliminate y:

  10x - 15y = -95

  12x + 15y = 51

2. Add the two equations to eliminate y:

  22x = -44

3. Divide both sides by 22 to solve for x:

  x = -2

4. Substitute x = -2 into one of the equations to solve for y. Let's use the first equation:

  2(-2) - 3y = -19

  -4 - 3y = -19

  -3y = -15

  y = 5

Therefore, the ordered pair (-2, 5) is the solution for the system of equations 2x − 3y = −19 and 4x + 5y = 17.

Based on the information given in (6), we know that the mean is 65 and the standard deviation is 3. we can use the empirical rule to estimate the probability of the sample mean being within one standard deviation away from the mean in either the positive or negative direction.

According to the empirical rule, approximately 68% of the sample means will fall within one standard deviation away from the mean in either direction. Therefore, the probability of the sample mean being within one standard deviation away from the mean in either the positive or negative direction is approximately 0.68 or 68%.

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The answer is B, which is to find the common denominator.

In solving a rational equation, the first step is usually to find a common denominator for all the fractions in the equation. This allows us to combine the fractions into a single fraction and simplify the equation.

To find the common denominator, we need to identify the factors of the denominators and determine the least common multiple (LCM) of these factors. Then, we multiply each fraction by the appropriate factor(s) to get the common denominator. For example, if we have the equation:

(3/x) + (4/2x) = 1/4

The denominators are x and 2x, which have factors of x and 2. The LCM of these factors is 2x, so we need to multiply the first fraction by 2 and the second fraction by 1 to get:

(6/2x) + (4/2x) = 1/4

Then we can combine the fractions and simplify the equation to get:

(10/2x) = 1/4

From here, we can continue to solve for x by cross multiplying and manipulating the equation.

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To find the measure of angle BOC, set the expressions for m∠AOD and m∠BOC equal and solve for x. Then substitute the value of x back into the expression for m∠BOC to find its measure, which is 30°.

To find the measure of angle BOC, we can set the expressions for m∠AOD and m∠BOC equal to each other and solve for x.

7x - 5 = 3x + 15

Subtract 3x from both sides: 4x - 5 = 15

Add 5 to both sides: 4x = 20

Divide both sides by 4: x = 5

Now that we know x = 5, we can substitute it back into the expression for m∠BOC to find its measure.

m∠BOC = (3x + 15)° = (3*5 + 15)° = 30°

Therefore, the measure of ∠BOC is 30°, which corresponds to option B.

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The probability of Suzan getting one of each color other than fluorescent pink, given that she gets the fluorescent pink one, is 108/1001 or approximately 0.108.

To find the probability of Suzan getting one of each color other than fluorescent pink, given that she gets the fluorescent pink one, we can use counting techniques.

First, we need to find the total number of ways Suzan can choose four marbles out of the 14 in the bag. This can be calculated using combinations, which is 14 choose 4 or (14!)/(4!10!) = 1001.

Next, we need to find the number of ways Suzan can choose one of each color other than fluorescent pink, given that she already picked the fluorescent pink one. There are three red, three green, three yellow, and four orange marbles left in the bag. Suzan needs to choose one from each color, which can be done in (3x3x3x4) = 108 ways.

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Answer: x=8

Step-by-step explanation: to get the answer you try to isolate the x you do this by multiplying both side by 10 which you get x= 40/5 which you can simplify so 8

Answer:

The answer to your problem is,

Step-by-step explanation:

So in this problem we will solve for ‘ x ‘

We will make equivalent fraction on the way.

The problem; [tex]\frac{4}{5}[/tex] = [tex]\frac{?}{10}[/tex]

How to find equivalent fractions:

First in order to find equivalent fractions do as I follow:

1. Multiply by 2 for the denominator and numerator

Make it into this fraction, [tex]\frac{4*2}{5*2}[/tex].

2. Solve:

4 × 2 = 8[tex]\frac{8}{10}[/tex]

5 × 2 = 10

3. Make into fraction, [tex]\frac{8}{10}[/tex]

[tex]\frac{8}{10}[/tex] is the answer

Thus the answer to your problem is, [tex]\frac{8}{10}[/tex]

The df value for Monica's analysis is 98.

To calculate the degrees of freedom (df) for the Pearson correlation

coefficient, we need to know the sample size, which is the number of

observations or pairs of scores.

In this case, the sample size is 100 because Monica collected data from

100 people.

The formula for calculating the degrees of freedom for the Pearson

correlation coefficient is:

df = n - 2

where n is the sample size.

So, in this case, the degrees of freedom (df) would be:

df = 100 - 2 = 98

Therefore, the df value for Monica's analysis is 98.

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A researcher collected data on the age, in years, and the growth of sea turtles. The following graph is a residual plot of the regression of growth versus age. No, the residual plot does not support the appropriateness of a linear model because the graph displays a U -shaped pattern.

Researchers are employed in practically every industry or are paid to find, examine, and interpret data as well as identify patterns. They are employed in a variety of industries, including academics, science, medicine, and finance. Their workload is influenced by and dependent on their research objectives.

Through the use of the internet, books, articles in the press, surveys, and interviews, they develop information and collect data. No, the residual plot does not support the appropriateness of a linear model because the graph displays a U -shaped pattern.

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The absolute minimum value of f on the given interval is 8+4π and the absolute maximum value of f on the given interval is 15.

To find the absolute maximum and absolute minimum values of f on the given interval [0,15], we need to first find the critical points of the function and then evaluate the function at those critical points as well as at the endpoints of the interval.

To find the critical points of f, we need to find the values of x where f'(x) = 0 or f'(x) does not exist.

f'(x) = 3x^2 - 1 - 25 = 3x^2 - 26

Setting f'(x) = 0, we get:

3x^2 - 26 = 0

x^2 = 26/3

x = ± √(26/3)

Since √(26/3) is not in the interval [0,15], we only need to consider x = - √(26/3) as a critical point.

Next, we evaluate the function f at the critical point and at the endpoints of the interval:

f(0) = 0(0)^2 - 0 - 25 = -25

f(15) = 15(15)^2 - 15 - 25 = 3375 - 15 - 25 = 3335

f(-√(26/3)) = (-√(26/3))(√(26/3))^2 - (-√(26/3)) - 25

= 26/3 + √(26/3) - 25

To compare these values and find the absolute maximum and minimum, we can use the following observations:

- If the critical point or an endpoint gives the largest value of f, then that is the absolute maximum.
- If the critical point or an endpoint gives the smallest value of f, then that is the absolute minimum.

Comparing the values we found, we can see that:

- The absolute minimum value of f on [0,15] is 26/3 + √(26/3) - 25 ≈ 8 + 4π
- The absolute maximum value of f on [0,15] is 15

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The rate of decay, denoted as 'r,' is a key factor in exponential functions, particularly when modeling real-world scenarios such as population decrease, radioactive decay, and depreciation of assets.

In an exponential decay function, the form is y = ab^(rt), where 'y' represents the remaining quantity, 'a' is the initial quantity, 'b' is the base, 'r' is the rate of decay expressed as a decimal, and 't' is the time elapsed.

The rate of decay, r, is a constant value that determines how rapidly the quantity decreases over time. It is expressed as a decimal (e.g., 0.2 for a 20% decay rate) and should be between 0 and 1 for decay scenarios. When determining the rate of decay, it is essential to gather data points that can be plotted on a graph to create an exponential curve, allowing you to estimate the decay rate accurately.

In some cases, the exponential decay equation can be written as y = ae^(-rt), where 'e' is the base of natural logarithms, approximately equal to 2.718. This is another representation of the same decay process and follows the same principles in terms of decay rate calculations.

To find the rate of decay for a specific dataset, you can use various techniques, including curve fitting or regression analysis, which help to find the best match between the data points and the exponential decay function.

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The type of study described in the question is an observational study.

Specifically, it is a cross-sectional study because data was collected at a single point in time from a representative sample of the population of interest. In this study, the researcher used existing data from the 2014 U.S. National Health Interview Study to explore the relationship between smoking and depression.

The study did not involve manipulating any variables or assigning participants to different groups, which are characteristics of experimental studies. Instead, the researcher examined data on smoking and depression status to see if there was a correlation between the two variables.

Since the study was observational, it is not possible to establish causality or determine the direction of the relationship between smoking and depression. However, the results may be useful for generating hypotheses for further research or informing public health policies related to smoking and mental health.

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Answer:

Step-by-step explanation:

You want to know the number of 5-letter combinations of 3 consonants and 2 vowels can be formed from the letters of "FORMULATED", and the number that have a vowel at each end.

Since the problem statement uses the word "combinations" instead of "permutations", we take it to mean that "FORMU" is to be considered the same as "FOMRU" and "FUMRO", which have the same letters.

Since the position of the vowels seems to matter, either of the above is considered different from "FORUM" where the vowels are in different places.

The number of combinations of 3 consonants from the 6 in "FORMULATED" is 6C3 = 6!/(3!(6 -3)!) = 20, and the number of combinations of 2 vowels of the 4 given is 4C2 = 4!/(2!(4-2)!) = 6.

The possible arrangements of 2 vowels and 3 consonants in a group of 5 letters is 5C2 = 5!/(2!(5-2)!) = 10.

So, the combinations of 3 consonants and 2 vowels in with vowels in the different possible positions is ...

  20·6·10 = 1200

There can be 1200 different 5-letter combinations.

There is only one of the 10 possible arrangements of consonants and vowels that has the vowels at each end. The number of such arrangements is 1/10 of the total, or (1/10)(1200) = 120.

120 of the letter combinations will have a vowel at each end.

__

Additional comment

More often, we're interested in the number of "words", where letter order matters. If that is intended to be the case, then the number of 5-letter "words" is 6P3·4P2·5C2 = 14400, and the number that have vowels at each end is 1440.

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The quantity of the substance left at any time t > 0 can be found using the formula q(t) = 20 * 2^(-t/3200).The half-life of a radioactive substance is the time it takes for half of the original amount of the substance to decay. In this case, the half-life is 3200 years, which means that after 3200 years, half of the substance will have decayed.

After another 3200 years, half of the remaining substance will have decayed, and so on.

To find the quantity q(t) of the substance left at time t > 0, we can use the formula q(t) = q(0) * 2^(-t/h), where q(0) is the initial quantity of the substance, t is the time elapsed, and h is the half-life of the substance.

In this case, q(0) = 20 g and h = 3200 years. So, the formula becomes q(t) = 20 * 2^(-t/3200).

For example, if t = 3200 years, then q(t) = 20 * 2^(-3200/3200) = 10 g, which means that half of the substance has decayed. If t = 6400 years, then q(t) = 20 * 2^(-6400/3200) = 5 g, which means that three-quarters of the substance has decayed.

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The height of the structure is 15 feet.

We have,

Hypotenuse = √261 feet

Base= 6 feet

Using Pythagoras theorem

H² = P² + B²

(√261)² = P² + 6²

261 = P² + 36

261 - 36 = P²

P² = 225

P = 15 unit

Thus, the height of the structure is 15 feet.

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The amount of milk Jonah bring is 8 quarts of milk

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

Jonah brought 16 pints of milk to share with his soccer teammates at halftime.

This means that

Milk = 16 pints of milk

By the metric units of conversion, we have

1 pint of milk = 0.5 quart of milk

Substitute the known values in the above equation, so, we have the following representation

Milk = 16 quarts of milk * 0.5

Evaluate

Milk = 8 quarts of milk

Hence, the amount of milk is 8 quarts of milk

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The , th only eigenvalue for the transformation that rotates points by 90 degrees about some axis through the origin is 1.

Let's assume that the transformation rotates points by 90 degrees about some axis through the origin. We can represent this transformation by a matrix A, and the eigenvectors of A will be the axis of rotation. Since the rotation is by 90 degrees, the eigenvectors will be orthogonal to the axis of rotation.

To find the eigenvalues of A, we can use the characteristic equation:

det(A - λI) = 0

where λ is the eigenvalue and I is the identity matrix. Since A is a rotation matrix, its determinant is equal to 1, and we can write:

det(A - λI) = det(A) - λ det(I) = 1 - λ

To find the eigenvalues, we need to solve the equation:

1 - λ = 0

which gives us λ = 1. Therefore, the only eigenvalue for the transformation that rotates points by 90 degrees about some axis through the origin is 1.

Note that the eigenvectors associated with this eigenvalue will be any two orthogonal vectors in the plane perpendicular to the axis of rotation.

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The area of a regular octagon with sides 1/3 the length of sides of the larger octagon is 173.82 ft sq.

The area of a polygon = n side^2 / (4 tan(180/n))

where "n" is the number of sides

To calculate area for side = 2

area = 8 x 2^2 / (4  tan(180/8))

area = 32 / (4  tan(22.5))

area = 32 / 4 x 0.41421

area = 19.3138746047

To calculate area for side = 6

area = 8*6^2 / (4 * tan(180/8))

area = 288 / 1.65684

area = 173.824871442

173.824871442 / 19.3138746047 =  9

So, the area would be 9 times larger.

Therefore, if we increase the side length is increased by 1/3, then the area increases by 1/9.

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The maximum clearance for the bridge is 16 ft using the formula for parabolic arch.

Parabolic arches are well-known for their superior strength compared to other types of arches. These arches distribute weight more evenly, reducing the amount of stress that is placed on any given point. As a result, parabolic arches are commonly used in the construction of bridges.

In the case of a bridge with a supporting parabolic arch spanning 60 ft with a 30 ft wide road passing underneath, the minimum clearance needed is 16 ft. This means that the maximum height of the arch can be calculated by subtracting 16 ft from the height of the bridge.

To find the height of the bridge, we need to consider the formula for a parabolic arch: y = ax^2. Here, y is the height of the arch at any given point, x is the distance from the center of the arch, and a is a constant. The value of a will depend on the specific dimensions and properties of the arch.

In this case, we know that the span of the arch is 60 ft, so x = 30 ft at the halfway point. We also know that the height of the arch at this point is 16 ft + y, which gives us the equation [tex]16 ft + y = a(30 ft)^2[/tex].

Simplifying this equation, we get:

16 ft + y = 900a

To find the maximum clearance, we need to solve for y when a is at its maximum value. We can do this by finding the maximum value of a, which occurs at the apex of the arch.

The apex of a parabolic arch is located at the halfway point of the span, so x = 30 ft. We also know that the height of the arch at this point is 0 (since it is the highest point of the arch), so we can substitute these values into the formula to find the value of a:

[tex]0 = a(30 ft)^2[/tex]
a = 0

Now that we know that a = 0 at the apex of the arch, we can substitute this value into the equation we derived earlier:

16 ft + y = 900a
16 ft + y = 0
y = -16 ft

This means that the maximum clearance for the bridge is 16 ft, since the height of the arch at the apex is -16 ft (or 16 ft below the height of the bridge).

In conclusion, parabolic arches are known for their superior strength and are commonly used in bridge construction. By using the formula for a parabolic arch, we can calculate the maximum clearance for a bridge with a supporting parabolic arch. In this case, the maximum clearance is 16 ft, since the height of the arch at the apex is -16 ft.

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If 400 hypothesis tests are conducted with a null hypothesis assumed to be true and using a significance level of 1%, approximately 4 tests will incorrectly find significance. This is because 1% of 400 is 4 (0.01 x 400 = 4).

If the null hypothesis is true, then we would expect approximately 1% of the tests to result in a Type I error, which is incorrectly rejecting the null hypothesis. Therefore, out of the 400 tests conducted at a significance level of 1%, we would expect approximately 4 tests to incorrectly find significance.

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The estimate of the standard error of the mean (SE) is approximately 0.359 lb.

The standard error of the mean (SE) is a measure of the precision of the sample mean as an estimate of the population mean. It tells us how much variability there is in the sample means that we would expect if we took many random samples from the same population.

The formula for the SE is the standard deviation of the sample divided by the square root of the sample size.

In this case, we are given the sample mean = 10.85 lb, the sample standard deviation (s) = 4.25 lb, and the sample size (n) = 140 cats.

Using the formula, SE = s/√n, we can calculate the estimate of the SE to be:

SE = 4.25/√140 ≈ 0.359 lb

Therefore, we can estimate that the standard error is 0.359 lb.

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Thus, the ladder reaches up approximately 11.28 feet of length up the side of the house.

The ladder represents the hypotenuse of a right triangle, the distance up the side of the house represents the opposite side, and the distance from the base of the ladder to the house represents the adjacent side.

Now, we can use the trigonometric function sine to find the length of the opposite side.

sin(70) = opposite/hypotenuse

sin(70) = x/12

x = 12sin(70)

Using a calculator, we can find that sin(70) is approximately 0.9397.

x = 12(0.9397)

x = 11.2764

Therefore, the ladder reaches up approximately 11.28 feet up the side of the house.

In summary, to find the distance up the side of the house that the ladder reaches, we used trigonometry and the sine function. The long answer to this problem explains the steps in detail and provides the numerical solution.

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Jim and Mary, both from Berkeley and of the same age, take separate trips to Los Angeles. Jim travels at a velocity of 65 miles per hour and reaches his destination, where he waits for Mary. The next day, Mary begins her journey, driving at a faster velocity of 70 miles per hour.

Upon arriving in Los Angeles, both Jim and Mary are still the same age. This is because age is a function of time, and both individuals have aged the same amount of time since the start of their journeys. While their respective velocities and travel times may differ, their ages remain equal as they are both progressing through time at the same rate.

In conclusion, Jim and Mary will be the exact same age when they meet in Los Angeles, regardless of their differing travel velocities. The difference in speed does not affect their aging process, as time progresses at the same rate for both of them.

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To the nearest tenth, the approximate volume of a roll of pennies is 21650.0 mm³.

To find the approximate volume of a roll of pennies, we'll first calculate the volume of a single penny and then multiply that by the number of pennies in a roll (usually 50).

We will use the terms diameter and thickness in the calculation. Here are the steps:
Calculate the radius of the penny by dividing the diameter by 2:
Radius = Diameter / 2

= 19.05 mm / 2

= 9.525 mm.

Calculate the volume of a single penny using the formula for the volume of a cylinder (Volume = π × Radius² × Thickness):
Volume = π × (9.525 mm)² × 1.52 mm ≈ 433.0 mm³
Calculate the volume of a roll of 50 pennies:
Roll Volume = Single Penny Volume × Number of Pennies.

= 433.0 mm³ × 50 ≈ 21650 mm³.

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The value of c depends on the initial conditions x0 and y0. For example, if we are given x0 = 1 and y0 = 2, then c = 1. If we are given x0 = 2 and y0 = 5, then c = 8/3. To solve this problem, we first need to find the derivative of y with respect to x. Using the quotient rule, we get:

y' = (2x^(-3))(cx^4 - 2)

Next, we substitute y and y' into the differential equation and simplify:

xy' + 2y = 4x^2
x(2x^(-3))(cx^4 - 2) + 2(x^2 + c/x^2) = 4x^2
2cx - 2x^(-2) + 2x^2 + 2c/x^2 = 4x^2
2cx + 2c/x^2 = 6x^2
2c(x^3 + 1) = 6x^4
c = 3x/(x^3 + 1)

To satisfy the initial condition, we need to find the value of c that makes y(x) equal to some given value y0 when x = x0. Plugging in x0 and y0 into the equation for y, we get:

y0 = x0^2 + c/x0^2
c = x0^2(y0 - x0^2/x0^2)

In summary, the value of c that satisfies the given differential equation and initial condition depends on the specific values of x0 and y0. We can find c by plugging in these values into the equation for y and solving for c.

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The total amount owed by the students for the week is $[tex]$28[/tex].

An amount owed refers to total of the money a person owe us from time to time which can include loan and any unpaid interest, fees and expenses. It can also be an ordinal expenses such as school fee etc.

The total amount owed by the student will be:

= $3.00 + $8.00 + $7.00 + $10.00

= $28

Full question "On the first Monday of each month, the school sends home a note that includes each student's lunch account balance. These students owe money. Student 1 =$3.00, Student 2 - $8.00, Student 3 - $7.00, Student 4 - $10.00. What is the total amount owed by the student?".

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If the sand falls at a rate of 16 cubic millimeters per second, a player would have approximately 6.25 seconds for their turn.

The rate of sand falling from the hourglass is given as 16 cubic millimeters per second. We need to find out the time available for a turn. Let's assume that the hourglass is filled with 'x' cubic millimeters of sand.

We can use the formula:

Volume = Rate x Time

Here, the volume of sand is 'x' cubic millimeters, the rate is 16 cubic millimeters per second, and we need to find the time available for a turn, which we can represent as 't' seconds.

So,

x = 16t

We can rearrange this equation to find 't':

t = x/16

This means that the time available for a turn is equal to the volume of sand in the hourglass divided by the rate at which the sand falls.

We don't know the exact volume of sand in the hourglass, but let's assume it's 100 cubic millimeters.

Then,

t = 100/16

t = 6.25 seconds

So, in this case, a player would have approximately 6.25 seconds for their turn before all of the sand falls to the bottom of the hourglass.

To know more about rate, refer to the link below:

https://brainly.com/question/31768964#

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