Solve the following Exact Inexact Differential Equation. If it is inexact, then
solve it by finding the Integrating Factor.
(3xy + y^2) dx + (x^2 + xy) dy = 0

Answers

Answer 1

The general solution to the differential equation is, |3x^4/(y(x+y))|x + |x^3| ln|y| + |x^3| ln|x+y| + h(x) = C.

The partial derivative of (3xy + y^2) with respect to y is 6xy + 2y, and the partial derivative of (x^2 + xy) with respect to x is 2x + y. Since these are not equal, the differential equation is not exact.

To make it exact, we need to find an integrating factor μ(x, y) such that μ(x, y)(3xy + y^2) dx + μ(x, y)(x^2 + xy) dy = 0 is exact. We can find μ(x, y) by using the formula:

μ(x, y) = e^(∫(∂M/∂y - ∂N/∂x)/N dx)

where M = 3xy + y^2 and N = x^2 + xy. We have:

(∂M/∂y - ∂N/∂x)/N = (6xy + 2y - 2x - y)/(x^2 + xy) = (6xy - x - y)/(x^2 + xy)

We can now find the integrating factor μ(x, y) by integrating this expression with respect to x:

μ(x, y) = e^(∫(6xy - x - y)/(x^2 + xy) dx) = e^(3ln|x| - ln|y| - ln|x+y| + C) = e^(ln|x^3/(y(x+y))| + C) = |x^3/(y(x+y))|e^C

where C is the constant of integration.

Now we multiply the original differential equation by the integrating factor μ(x, y) to obtain:

|3x^4/(y(x+y))| dx + |x^3/(y(x+y))| dy = 0

This is now an exact differential equation, and we can find its solution by integrating with respect to x or y. Integrating with respect to x, we get:

|3x^4/(y(x+y))|x + g(y) = C

where g(y) is the constant of integration. To find g(y), we integrate the coefficient of dy:

g(y) = ∫|x^3/(y(x+y))| dy = |x^3| ln|y| + |x^3| ln|x+y| + h(x)

where h(x) is another constant of integration. Substituting g(y) back into the solution, we have:

|3x^4/(y(x+y))|x + |x^3| ln|y| + |x^3| ln|x+y| + h(x) = C

This is the general solution to the differential equation.

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Related Questions

7) Compute the derivative of the function m(x) = -5xğ · V(x2 – 9)3. =

Answers

The answer for the derivative of m(x) is:

m'(x) = -10x(x^2 – 9)^(3/2) - 15x^3(x^2 – 9)^(1/2)

This is the final result after applying the product rule and the chain rule.

By use the product rule and the chain rule how we find the derivative?

We can use the product rule and the chain rule to find the derivative of the function

First, let's break down the function as follows:

[tex]m(x) = -5x^2 · V(x^2 – 9)^3[/tex]

[tex]= -5x^2 · (x^2 – 9)^3/2[/tex]

Using the product rule, we have:

[tex]m'(x) = [-5x^2]' · (x^2 – 9)^3/2 + (-5x^2) · [(x^2 – 9)^3/2]'[/tex]

Taking the derivative of the first term:

[tex][-5x^2]' = -10x[/tex]

Taking the derivative of the second term using the chain rule:

[tex][(x^2 – 9)^3/2]' = (3/2)(x^2 – 9)^(3/2-1) · 2x[/tex]

[tex]= 3x(x^2 – 9)^(1/2)[/tex]

Putting it all together:

[tex]m'(x) = -10x · (x^2 – 9)^(3/2) + (-5x^2) · 3x(x^2 – 9)^(1/2)[/tex]

[tex]= -10x(x^2 – 9)^(3/2) - 15x^3(x^2 – 9)^(1/2)[/tex]

To compute the derivative of a function, we need to apply the rules of differentiation, which include the product rule and the chain rule. In this case, we have a product of two functions, [tex]-5x^2[/tex] and [tex]V(x^2 – 9)^3[/tex], where V represents the square root. We apply the product rule to differentiate the two functions.

The product rule states that if we have two functions, u(x) and v(x), then the derivative of their product, u(x) · v(x), is given by u'(x) · v(x) + u(x) · v'(x). We use this rule to differentiate the two terms in the product.For the first term, [tex]-5x^2[/tex], the derivative is straightforward and is simply -10x.

For the second term, [tex]V(x^2 – 9)^3[/tex], we need to use the chain rule because the function inside the square root is not a simple polynomial. The chain rule states that if we have a function g(u(x)), where u(x) is a function of x, then the derivative of g(u(x)) is given by g'(u(x)) · u'(x). In this case, we have [tex]g(u(x)) = V(u(x))^3[/tex], where [tex]u(x) = x^2 – 9[/tex]. We need to apply the chain rule with [tex]g(u) = V(u)^3[/tex] and [tex]u(x) = x^2 – 9[/tex].

To apply the chain rule, we first take the derivative of the function [tex]g(u) = V(u)^3[/tex] with respect to u. The derivative of [tex]V(u) = u^(1/2[/tex]) is [tex]1/(2u^(1/2))[/tex].

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Write a number equivalent to x to the power of -3 using a positive exponent.

Answers

The number equivalent to x to the power of -3 using a positive exponent is 1/x³.

How can we express x to the power of -3 as a positive exponent?

When a number is raised to a negative exponent, it means the reciprocal of that number is being raised to the corresponding positive exponent. In other words, x⁻³ can be written as 1/x³.

To understand why this is the case, consider the following example:

If we have x²/x⁵, we can simplify it by dividing the numerator and denominator by x². This results in 1/x³.

Therefore, any number raised to a negative exponent can be rewritten as its reciprocal raised to the corresponding positive exponent. So, x⁻³ can be rewritten as 1/x³.

When we raise a number to an exponent, we are essentially multiplying that number by itself a certain number of times. For example, 2³ means 2 multiplied by itself 3 times, which is equal to 8.

In mathematics, we can also use exponents to represent the reciprocal of a number.

The reciprocal of a number is simply 1 divided by that number. For example, the reciprocal of 2 is 1/2, and the reciprocal of 5 is 1/5.

Now, when we raise a number to a negative exponent, we are essentially raising its reciprocal to the corresponding positive exponent. This may seem a little confusing at first, but let me explain with an example:

x⁻³ = 1/(x³)

Let's verify this by simplifying the expression 1/(x³):

1/(x³) = 1/(xxx) = (1/x)(1/x)(1/x) = x⁻¹ * x⁻¹ * x⁻¹ = x⁻³

So we can see that x⁻³ is equivalent to 1/(x³), which is the reciprocal of x raised to the power of 3.

This concept of negative exponents is very useful in mathematics, as it allows us to simplify expressions and manipulate them in different ways.

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find the area of the circle
with steps pls

Answers

x = 3/8.

Starting from the left side of the equation:

2(x+1) - 3(x-2) = 7x + 5

Simplify the expressions in parentheses:

2x + 2 - 3x + 6 = 7x + 5

Combine like terms:

x + 8 = 7x + 5

Subtract 7x from both sides:

-8x + 8 = 5

Subtract 8 from both sides:

-8x = -3

Divide both sides by -8:

x = 3/8

Therefore, the solution to the equation is x = 3/8.

Answer:  M=3

Step-by-step explanation:

Given:

tangent =4cm

secant outside of circle = 2 cm

Find:

M   is secant inside of circle

Theorem:

Tangent-Secant Theorem => tangent² =(secant outside)(full secant)

Solution and Set up:

4²=(2)(2+M)              >Set up from theorem, square 4 and distribute

16=4+4M                  >subtract 4 from both sides

12 = 4M                    >divide both sides by 4

M=3

What is 30 players for 10 sports expressed as a rate

Answers

The rate can be expressed as "3 players per sport"

What is rate?

A rate is a ratio that compares two quantities with different units. In this case, we have 30 players and 10 sports. To express this as a rate, we want to compare the number of players to the number of sports. We can write this as:

30 players / 10 sports

To simplify this ratio, we can divide both the numerator (30 players) and denominator (10 sports) by the same factor to get an equivalent ratio. In this case, we can divide both by 10:

(30 players / 10) / (10 sports / 10)

This simplifies to:

3 players / 1 sport

So the rate can be expressed as "3 players per sport" or "3:1" (read as "three to one"). This means that for every one sport, there are three players.

Alternatively, we can express the rate as a fraction or decimal by dividing the number of players by the number of sports:

30 players / 10 sports = 3 players/sport = 3/1 = 3 or 3.0 (as a decimal)

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Find the value of k. Give your answer in degrees ().
k
84°
Not drawn accurately

Answers

Step-by-step explanation:

I had to add some assumed portions to your posted picture. See image.

 The yellow boxed angle is 84 degrees (upper LEFT) due to alternate interior angles of parallel lines transected by another line.

  then, since the triangle is isosceles ....the other (lower LEFT)  angle is 84 degrees also....

      that means that k= 12 degrees    for the triangle interior angles to sum to  180 degrees .

(0,1),(5,2),(2,-3),(-3,-3),(-5,3) range and domain

Answers

The domain of the set of points {(0,1),(5,2),(2,-3),(-3,-3),(-5,3)} is {0, 5, 2, -3, -5}, and the range is {-3, 1, 2, 3}.

What is the range and domain of the relation?

Given the relations in the question:

(0,1), (5,2), (2,-3), (-3,-3), (-5,3)

To determine the domain and range of a set of points, we need to look at the x-coordinates of the points to determine the domain, and the y-coordinates of the points to determine the range.

{(0,1),(5,2),(2,-3),(-3,-3),(-5,3)}

The x-coordinates of these points are: 0, 5, 2, -3, and -5.

Therefore, the domain of this set of points is:

Domain = {0, 5, 2, -3, -5}

The y-coordinates of these points are: 1, 2, -3, and 3.

Therefore, the range of this set of points is:

Range = {-3, 1, 2, 3}

Therefore, the domain is {0, 5, 2, -3, -5}, and the range is {-3, 1, 2, 3}.

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During 2022, each of the assets was removed from service. The machinery was retired on January 1. The forklift was sold on June 30 for $13,000. The truck was discarded on December 31. Journalize all entries required on the above dates, including entries to update depreciation, where applicable, on disposed assets. The company uses straight-line depreciation. All depreciation was up to date as of December 31, 2021

Answers

Loss on disposal of plant assets = $46400 - $32550

Loss on disposal of plant assets = $13850

How to solve

Date Account titles and Explanation Debit Credit

Jan. 01 Accumulated depreciation-Equipment $81000

Equipment  $81000

June 30 Depreciation expense (1) $4000

Accumulated depreciation-Equipment  $4000

(To record depreciation expense on forklift)  

June 30 Cash $13000

Accumulated depreciation-Equipment (2) $28000

Equipment  $40000

Gain on disposal of plant assets (3)  $1000

(To record sale of forklift)  

Dec. 31 Depreciation expense (4) $5425

Accumulated depreciation-Equipment  $5425

(To record depreciation expense on truck)  

Dec. 31 Accumulated depreciation-Equipment (5) $32550

Loss on disposal of plant assets (6) $13850

Equipment  $46400

(To record sale of truck)  

Calculations :

(1)

Depreciation expense = (Book value - Salvage value) / Useful life

Depreciation expense = ($40000 - $0) / 5 = $8000 per year

So, for half year = $8000 * 6/12 = $4000

(2)

From Jan. 1, 2019 to June 30, 2022 i.e 3.5 years.

Accumulated depreciation = $8000 * 3.5 years = $28000

(3)

Gain on disposal of plant assets = Sale value + Accumulated depreciation - Book value

Gain on disposal of plant assets = $13000 + $28000 - $40000

Gain on disposal of plant assets = $1000

(4)

Depreciation expense = (Book value - Salvage value) / Useful life

Depreciation expense = ($46400 - $3000) / 8

Depreciation expense = $5425 per year

(5)

From Jan. 1, 2017 to Dec. 31, 2022 i.e 6 years.

Accumulated depreciation = $5425 * 6 years = $32550

(6)

Loss on disposal of plant assets = Book value - Accumulated depreciation

Loss on disposal of plant assets = $46400 - $32550

Loss on disposal of plant assets = $13850

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Kimi wants to teach her puppy 4 new tricks. in how many different orders can the puppy learn the tricks?

Answers

Answer:

3! = 6

Step-by-step explanation:

Once she teaches the puppy one trick there are 3 possible tricks left. After teaching the second trick there are 2 and after the third there is 1. Therefore, we multiply these numbers together to get 3(2)(1)=6 which is 3!.

Use the Mean Value Theorem to show that if * > 0, then sin* < x.

Answers

According to the Mean Value Theorem, if a function is continuous on the interval [a, b] and differentiable on the open interval (a, b), there exists a point c in (a, b) such that the derivative at c equals the average rate of change between a and b.

To use the Mean Value Theorem to show that if * > 0, then sin* < x, we first need to apply the theorem to the function f(x) = sin x on the interval [0, *].

According to the Mean Value Theorem, there exists a number c in the interval (0, *) such that:

f(c) = (f(*) - f(0)) / (* - 0)

where f(*) = sin* and f(0) = sin 0 = 0.

Simplifying this equation, we get:

sin c = sin* / *

Now, since * > 0, we have sin* > 0 (since sin x is positive in the first quadrant). Therefore, dividing both sides of the equation by sin*, we get:

1 / sin c = * / sin*

Rearranging this inequality, we have:

sin* / * > sin c / c

But c is in the interval (0, *), so we have:

0 < c < *

Since sin x is a decreasing function in the interval (0, π/2), we have:

sin* > sin c

Combining this inequality with the earlier inequality, we get:

sin* / * > sin c / c < sin* / *

Therefore, we have shown that if * > 0, then sin* < x.
I understand that you'd like to use the Mean Value Theorem to show that if x > 0, then sin(x) < x. Here's the answer:

According to the Mean Value Theorem, if a function is continuous on the interval [a, b] and differentiable on the open interval (a, b), there exists a point c in (a, b) such that the derivative at c equals the average rate of change between a and b.

Let's consider the function f(x) = x - sin(x) on the interval [0, x] with x > 0. This function is continuous and differentiable on this interval. Now, we can apply the Mean Value Theorem to find a point c in the interval (0, x) such that:

f'(c) = (f(x) - f(0)) / (x - 0)

The derivative of f(x) is f'(x) = 1 - cos(x). Now, we can rewrite the equation:

1 - cos(c) = (x - sin(x) - 0) / x

Since 0 < c < x and cos(c) ≤ 1, we have:

1 - cos(c) ≥ 0

Thus, we can conclude that:

x - sin(x) ≥ 0

Which simplifies to:

sin(x) < x

This result is consistent with the Mean Value Theorem, showing that if x > 0, then sin(x) < x.

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Use vector notation to describe the points that lie in the given configuration. (Let t be an element of the Reals.) the line passing through (−1,−1,−1) and (8,−1,6)

Answers

As an illustration, at t = 0, we obtain the point (-1, -1, -1), and at t = 1, we obtain the point (8, -1, 6), which are the line's two endpoints.

what is vector ?

A vector is a dimensionless parameter in mathematics that has both its magnitude as well as its direction. A vector can be visualised geometrically as an arrow, with the direction and length of the arrow denoting the magnitude and direction of the vector, respectively. A column can be formally described as a component of a feature space. A vector space is a group of things (referred to as vectors) that may be added to and multiplied by scalars, which are often real numbers, in a way that complies with specific axioms. Flow rates, forces, and fields of electricity and magnetism are only a few of the many different types of quantities that can be represented by vectors.

given

Using vector notation, we can write the following for the line that passes through the points (-1, -1, -1) and (8, -1, 6):

r = (-1, -1, -1) + t(9, 0, 7) (9, 0, 7)

The direction of the line is indicated by the vector (9, 0, 7), which is created by deducting the position vectors of the first and second points. We may generate every point along the line by changing the value of the parameter t.

As an illustration, at t = 0, we obtain the point (-1, -1, -1), and at t = 1, we obtain the point (8, -1, 6), which are the line's two endpoints.

We obtain various places on the line for varying values of t.

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60 juniors and sophomores were asked whether or not they will attend the prom this year. The data from the survey is shown in the table. Find P(will attend the prom|sophomore).

Attend the prom Will not attend the prom Total
Sophomores 10 17 27
Juniors 24 9 33
Total 34 26 60

Answers

The probability of a sophomore attending the prom, given that they were selected from the group of sophomores, is:

P(will attend the prom|sophomore) = (number of sophomores attending the prom) / (total number of sophomores)

From the table, we see that the number of sophomores attending the prom is 10, and the total number of sophomores is 54 (10 + 17 + 27). Therefore:

P(will attend the prom|sophomore) = 10 / 54

Simplifying the fraction, we get:

P(will attend the prom|sophomore) = 5 / 27

So the probability of a sophomore attending the prom is 5/27 (18.519%).

Out of a sample of 760 people, 367 own their homes. Construct a 95% confidence interval for the population mean of people in the world that own their homes. CI = (45. 31%, 51. 27%) CI = (43. 62%, 52. 96%) CI = (44. 74%, 51. 84%) CI = (46. 87%, 52. 56%)

Answers

The correct confidence interval for the population mean of people in the world who own their homes is CI ≈ (45.3%, 51.3%).

To construct a confidence interval for the population mean of people in the world who own their homes, we can use the sample data and calculate the margin of error. The confidence interval will provide an estimated range within which the true population mean is likely to fall.

Given the sample size of 760 people and 367 individuals who own their homes, we can calculate the sample proportion of individuals who own their homes as follows:

Sample proportion (p-hat) = Number of individuals who own their homes / Sample size

p-hat = 367 / 760 ≈ 0.483

To construct the confidence interval, we can use the formula:

CI = p-hat ± Z * sqrt((p-hat * (1 - p-hat)) / n)

Where:

CI = Confidence Interval

p-hat = Sample proportion

Z = Z-score corresponding to the desired confidence level (95% confidence level corresponds to a Z-score of approximately 1.96)

n = Sample size

Plugging in the values, we get:

CI ≈ 0.483 ± 1.96 * sqrt((0.483 * (1 - 0.483)) / 760)

Calculating the expression inside the square root:

sqrt((0.483 * (1 - 0.483)) / 760) ≈ 0.0153

Substituting back into the confidence interval formula:

CI ≈ 0.483 ± 1.96 * 0.0153

CI ≈ (0.483 - 0.0300, 0.483 + 0.0300)

CI ≈ (0.453, 0.513)

Therefore, the correct confidence interval for the population mean of people in the world who own their homes is CI ≈ (45.3%, 51.3%). None of the provided answer choices match the correct confidence interval.

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Note: Figure is not drawn to scale. If the route takes him 10 miles on Forrest Lane and 26 miles up Cedar Drive, how far will Anthony ride down Pine Avenue?

Answers

The distance that Anthony will ride down Pine Avenue would be D.) 24 miles .

How to find the distance ?

Anthony's route distance along Pine Avenue can be calculated using the Pythagorean Theorem. This theorem confirms that in a right triangle, when one angle is 90 degrees, the sum of squares of the lengths of the two non-hypotenuse sides equals the square of length of the hypotenuse or the longest side.

Hypothenuse ² = Forrest Lane ² + Pine Avenue ²

26 ² = 10 ² + x ²

676 = 100 + x ²

x ² = 576

x = 24

In conclusion, Anthony will ride down Pine Avenue for 24 miles.

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Full question is:

Anthony was mapping out a route to ride his bike. The route he picked forms a right triangle, as shown in the picture below. If the route takes him 10 miles on Forrest Lane and 26 miles up Cedar Drive, how far will Anthony ride down Pine Avenue?

A.) 16 miles

B.) 36 miles

C.) 30 miles

D.) 24 miles

Jasmine creates a map of her town on the coordinate plane. The unit on the coordinate plane is one block.

The locations of the school, post office, and library are given. school (-4,1)
post office (2,1)
library (2,-4)
Move the points of each building to its correct location on the coordinate plane. Jasmine walks from the school to the post office and then to the library.

What is the total distance, in blocks, of her walk?

Answers

Jasmine walks from the school to the post office, which is a distance of $2 - (-4) = 6$ blocks horizontally and 0 blocks vertically, so the distance is 6 blocks. Then she walks from the post office to the library, which is a distance of $2 - 2 = 0$ blocks horizontally and $-4 - 1 = -5$ blocks vertically, so the distance is 5 blocks.

The total distance of Jasmine's walk is the sum of the distances of each leg of her journey, which is $6 + 5 = 11$ blocks. Therefore, Jasmine walks 11 blocks in total.

A recipe to make 4 pancakes calls for 6 teaspoon of flour. Tracy wants to make 10 pancakes using thks recipe. What equation will she needs to use to find out how many tablespoons of flour to use?

Answers

Thus, equation that Tracy needs to use to obtain the number of tablespoons of flour to use in making 10 pancakes.

Explain about the unitary method:

The unitary method is a method for determining the value of one unit from the values of several units or the other way around.

The unitary approach is a strategy for problem-solving that involves first determining the value of one unit, then multiplying that value to determine the required value.

Given data:

4 pancakes --->  6 teaspoon of flour.

For 1 pancake, divide above expression with 4 on both side.

1  pancakes --->  6/4 teaspoon of flour.

Now, for 10 pancake, multiply  above expression with 10 on both side.

10  pancakes --->  10* 6/4 teaspoon of flour.

Thus, equation that Tracy needs to use to obtain the number of tablespoons of flour to use in making 10 pancakes.

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Solve for x. Assume that lines which appear tangent are tangent.

Answers

Honestly my best guess is A

I can’t seem to figure out this problem, we were dealing with stretch factors but I don’t see one (correct me if I’m wrong) and we weren’t instructed on how to deal with problems like these so any help would be appreciated!l

Answers

The solution to this quadratic function is the ordered pairs (-2.414, 0) and (0.414, 0).

How to graph the solution to this linear equation?

In order to to graph the solution to the given linear equation on a coordinate plane, we would use an online graphing calculator to plot the given quadratic function and then take note of the x-intercept, zeros, or roots.

In this scenario and exercise, we would use an online graphing calculator to plot the given quadratic function as shown in the graph attached below;

f(x) = (x + 1)² - 2

Based on the graph (see attachment), we can logically deduce that the possible solutions to the given quadratic function is given by the ordered pair (-2.414, 0) and (0.414, 0).

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Complete Question:

Determine the solution to the quadratic function graphically.

Use the Chain Rule to find Oz/as and Oz/ot. sin(e) cos(6), = st*, Q = st дz as az at 1 x

Answers

the Chain Rule to find Oz/as and Oz/ot for the expression sin(e) cos(6), we first need to break it down into its component parts.

Let u = sin(e) and v = cos(6), so that our expression becomes u*v.

Now we can find the partial derivative of Oz/as by using the Chain Rule:

Oz/as = (dOz/du) * (du/as) + (dOz/dv) * (dv/as)

Since Oz = st*, we have dOz/du = st and dOz/dv = t*, so we can substitute those values in:

Oz/as = (st) * (dcos(e)/das) + (t*) * (-sin(6)/das)

To simplify this expression, we need to find the partial derivative of u and v with respect to as:

du/as = (dcos(e)/das)

dv/as = (-sin(6)/das)

Substituting those values back into our original expression for Oz/as, we get:

Oz/as = st * du/as + t* * dv/as

Oz/as = st * (dcos(e)/das) + t* * (-sin(6)/das)

Finally, we can simplify this expression by factoring out the common factor of das:

Oz/as = (st * dcos(e) - t* * sin(6)) / das

To find Oz/ot, we can follow the same steps but with respect to ot instead of as:

Oz/ot = (dOz/du) * (du/ot) + (dOz/dv) * (dv/ot)

Since Oz = st*, we have dOz/du = st and dOz/dv = t*, so we can substitute those values in:

Oz/ot = (st) * (-sin(e)/dot) + (t*) * (-6sin(6)/dot)

To simplify this expression, we need to find the partial derivative of u and v with respect to ot:

du/ot = (-sin(e)/dot)

dv/ot = (-6sin(6)/dot)

Substituting those values back into our original expression for Oz/ot, we get:

Oz/ot = st * du/ot + t* * dv/ot

Oz/ot = st * (-sin(e)/dot) + t* * (-6sin(6)/dot)

Finally, we can simplify this expression by factoring out the common factor of dot:

Oz/ot = (-sin(e)st - 6sin(6)t*) / dot
To find ∂z/∂s and ∂z/∂t using the Chain Rule, let's first define the given functions:

1. z = st (where s and t are variables)
2. s = sin(e) (where e is a variable)
3. t = cos(θ) (where θ is a variable)

Now, apply the Chain Rule to find ∂z/∂s and ∂z/∂t:

Chain Rule states: ∂z/∂x = (∂z/∂s) * (∂s/∂x) + (∂z/∂t) * (∂t/∂x)

1. Find ∂z/∂s:
Since z = st, ∂z/∂s = t

2. Find ∂z/∂t:
Since z = st, ∂z/∂t = s

Now we have ∂z/∂s and ∂z/∂t. You can use these expressions to find the desired derivatives by substituting the given functions for s and t.

∂z/∂s = t = cos(θ)
∂z/∂t = s = sin(e)

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LT 18.1
The radius of Circle A below is 11 millimeters and the measure of < BAC is 60°.

What is the length of Arc BC, to the nearest millimeter?

A. 12 mm
B. 24 mm
C. 6 mm
D. 3 mm

Answers

[tex]\textit{arc's length}\\\\ s = \cfrac{\theta \pi r}{180} ~~ \begin{cases} r=radius\\ \theta =\stackrel{degrees}{angle}\\[-0.5em] \hrulefill\\ r=11\\ \theta =60 \end{cases}\implies s=\cfrac{(60)\pi (11)}{180}\implies s=\cfrac{11\pi }{3}\implies s\approx 12~mm[/tex]

Answer: 12mm

Step-by-step explanation:

Basically, you will find the circumference of the entire circle and then using that find the length of the arc.

So the circumference of the circle is its radius (11) times pi multiplied by 2.

2(11 x 3.14) = 69.08

Now a circle is always 360 degrees and the angle of the sector is 60 degrees.

So we have our circumference and we only need that small portion, so you take and make it a fraction and multiply by the circumference to find the length of that small portion:

60/360 x 69.08 = 11.51

Rounded = 12

7. the interest on a particular savings account is compounded continuously. the account initially had $3500 deposited in it. the worth of the account after t-years can be calculated using the formula: a(t)- 3500041 (a) by what percent will the worth of the account increase per year? round to the nearest hundredth of a percent. (b) to the nearest tenth of a year, how long will it take for the worth of the account to triple?​

Answers

With the given formula  [tex]a(t) = 3500e^{(0.041t)[/tex], the percent increase per year for savings account is 4.1% and it will take about 16.9 years for the worth of the account to triple.

a) The formula given is: [tex]a(t) = 3500e^{({0.041t)[/tex]

To find the percent increase per year, we need to find the annual growth rate. We can do this by taking the derivative of a(t) with respect to t:

[tex]a'(t) = 0.041 * 3500 * e^{(0.041t)[/tex]

The annual growth rate is equal to a'(t)/a(t). Plugging in the formula for a(t) and simplifying, we get:

a'(t)/a(t) = 0.041

So the percent increase per year is 4.1%.

b) We want to find the time it takes for the account to triple in value, so we need to solve for t in the equation:

[tex]3a(0) = 3500e^{(0.041t)[/tex]

Dividing both sides by 3500 and taking the natural logarithm of both sides, we get:

ln(3) = 0.041t

t = ln(3)/0.041

Using a calculator, we get:

t ≈ 16.92 years

So it will take about 16.9 years for the worth of the account to triple.

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Devonte is studying for a history test he uses 1/8 of a side of one sheet of paper to write notes for each history event he fills 2 full sides of one sheet paper. which expression could be used to find how many events

Answers

The expression to find the number of events is: (1 event) / (1/8 side) = (n events) / (1/4 sides).

Devonte is studying for a history test and uses 1/8 of a side of one sheet of paper to write notes for each history event. He fills 2 full sides of one sheet of paper. To find out how many events he wrote notes for, you can set up an expression using the given information.

Since Devonte uses 1/8 of a side for each event, and he fills 2 sides, you can calculate the total amount of space he used by multiplying the fractions: (1/8) * 2. This simplifies to 2/8 or 1/4. Now, you can set up a proportion to find the number of events (n) that Devonte wrote notes for:

(1 event) / (1/8 side) = (n events) / (1/4 sides)

Cross-multiply to solve for n:

1 * (1/4) = n * (1/8)

1/4 = n/8

To find n, multiply both sides by 8:

(8) * (1/4) = n

2 = n

So, Devonte wrote notes for 2 history events using the 2 full sides of one sheet of paper. The expression to find the number of events is: (1 event) / (1/8 side) = (n events) / (1/4 sides).

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Complete Question:

Devonte is studying for a history test. He uses 1/8 of a side of one sheet of paper to write notes for each history event. He fills 2 full sides of one sheet of paper. Which expression could be used to find how many events Devonte makes notes for?

Se van a repartir $10000 entre 3 personas de tal forma q la primera recibe $900 mas q la segunda y esta $200 mas q la tercera.La persona más beneficiada recibe en total: a- $4600. b- $4400. c- $4200. d- $4000

Answers

Answer:

The answer is A

Step-by-step explanation:

Is The number of insects feeding on a tree leaf discrete or continious

Answers

The number of insects feeding on a tree leaf is a discrete variable.

The number of insects feeding on a tree leaf is a countable variable that can only take on integer values (0, 1, 2, 3, etc.). It cannot take on fractional or continuous values. This is because each insect can either feed on the leaf or not, and there cannot be a fractional or continuous number of insects feeding on the leaf.

Therefore, the number of insects feeding on a tree leaf is a discrete variable. This is in contrast to a continuous variable, which can take on any value within a certain range. For example, the weight of the insects on the leaf would be a continuous variable since it can take on fractional values.

In mathematical terms, the number of insects feeding on a tree leaf can be represented as a discrete random variable X, where X can take on any non-negative integer value.

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If a card never cost to ask what the first minimum payment would be for $3000 balance transfer at 4. 99% there is currently no balance on the account and the fee is 4% the minimum payment would be what

Answers

The first minimum payment would be $62.40 as it is higher than $25.

To determine the first minimum payment for a $3000 balance transfer at 4.99% with a 4% fee, you need to first calculate the balance transfer fee and add it to the initial balance. Then, you'll need to determine the minimum payment based on the credit card issuer's policy.

1. Calculate the balance transfer fee: $3000 * 4% = $120
2. Add the balance transfer fee to the initial balance: $3000 + $120 = $3120
3. The minimum payment depends on the credit card issuer's policy. Typically, the minimum payment is a percentage of the balance or a fixed amount, whichever is higher. For example, if the issuer requires a minimum payment of 2% of the balance or $25, whichever is higher:
  - Calculate 2% of the balance: $3120 * 2% = $62.40
  - Since $62.40 is higher than $25, the first minimum payment would be $62.40.

Please note that the actual minimum payment may vary depending on the specific credit card issuer's policy.

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Rebecca folded a piece of notebook paper, as shown below. What is the area of the folded piece of notebook paper?

Answers

The area of the folded piece of paper is 30 inches square

How to find the area of a trapezium?

The paper is folded in the shape of a trapezium. The area of the trapezium can be found as follows:

area of the trapezium = 1 / 2 (a + b)h

where

a = top lengthb = base lengthh = height of the trapezium

Therefore,

a = 4 inches

b = 4 + 2 + 2 = 8 inches

h = 5 inches

area of the trapezium = 1 / 2 (4 + 8)5

area of the trapezium = 1 / 2 (12)5

area of the trapezium = 60 / 2

area of the trapezium = 30 inches square

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Determine whether or not the given set is (a) open, (b) connected, and (c) simply-connected
A. {(x, y) | 0 < y < 3} B. {(x, y) |1

Answers

For set A, (a) it is not open, (b) it is connected, and (c) it is simply-connected. For set B, (a) it is open, (b) it is not connected, and (c) it is not simply-connected.

(a) For set A, any neighborhood around the point (0,3) will contain points outside the set, so it is not open. For set B, any point can be contained in a small ball that is entirely contained in the set, so it is open.

(b) For set A, any two points can be connected by a path within the set, so it is connected. For set B, the set consists of two disjoint open disks, so it is not connected.

(c) For set A, any loop in the set can be continuously shrunk to a point within the set, so it is simply-connected. For set B, there exists a loop that cannot be continuously shrunk to a point within the set (the loop that surrounds the hole in the middle), so it is not simply-connected.

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y were surveyed on questions regarding their educational background (college degree or no college degree) and marital status (single or married). of the 600 employees, 400 had college degrees, 100 were single, and 60 were single college graduates. find the probability that

Answers

The value is calculated by dividing the total number of occurrences by 200 favourable examples that do not possess a college degree is 0.33 is the determined probability value.

The favourable number of cases is 200.

The total number of cases is 600.

The calculation of the required probability is,

Probability = Favourable cases Total number of cases 200 600 = 0.33

Occurrences refer to events or incidents that happen in a particular time or place. These events can be both positive and negative and can occur in various contexts, such as personal experiences, historical events, natural phenomena, and scientific observations.

Occurrences can be significant or insignificant, depending on their impact on individuals or society as a whole. Some occurrences may be routine and expected, while others may be unexpected and unpredictable. The study of occurrences is important in many fields, including history, sociology, psychology, and environmental science. By analyzing past occurrences, researchers can gain insights into patterns of behavior and trends that can inform future decisions and policies.

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Complete Question:-

The employees of a company were surveyed on questions regarding their educational background (college degree or no college degree) and marital status (single or married). Of the 600 employees, 400 had college degrees, 100 were single, and 60 were single college graduates. The probability that an employee of the company does not have a college degree is:

The probability that sue will go to mexico in the winter and to france

in the summer is

0. 40
. the probability that she will go to mexico in

the winter is

0. 60
. find the probability that she will go to france this

summer, given that she just returned from her winter vacation in

mexico

Answers

The  evaluated probability that Sue travel to France this summer is 0.67, under the condition that she just returned from her winter vacation in Mexico.

For the required problem we have to apply  Bayes' theorem.

Let  us consider that A is the event that Sue goes to France in the summer and B be the event that Sue goes to Mexico in the winter.

Now,

P(A and B) = P(B) × P(A|B)

= 0.40

P(B) = 0.60

Therefore now we have to find P(A|B),  which means the probability that Sue traveled to France after coming from Mexico

Applying Bayes' theorem,

P(A|B) = P(B|A) × P(A) / P(B)

It is given that P(B|A) = P(A and B) / P(A), then

P(A|B) = (P(A and B) / P(A)) × P(A) / P(B)

P(A|B) = P(A and B) / P(B)

Staging the values

P(A|B) = 0.40 / 0.60

P(A|B) = 0.67

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The complete question is

The probability that Sue will go to Mexico in the winter and to France in the summer is 0. 40. the probability that she will go to mexico in the winter is 0. 60. find the probability that she will go to France this summer, given that she just returned from her winter vacation in Mexico.

Find the maximum sum of two positive numbers (not necessarily
integers), each of which is in [1,450], and whose product is
450.

Answers

The maximum sum of two positive numbers in the range [1, 450] with a product of 450 is approximately 42.42.

How to find sum of two positive numbers?



1. Let the two numbers be x and y.
2. Given that their product is 450, we have the equation xy = 450.
3. To find the maximum sum, we will use the fact that the sum of two numbers is maximum when they are equal. So, x = y.
4. From the product equation, we get x * x = 450, which implies x^2 = 450.
5. Taking the square root of both sides, we have x = √450 ≈ 21.21 (approximately).
6. Since x = y, the maximum sum is x + y = 21.21 + 21.21 ≈ 42.42.

Therefore, the maximum sum of two positive numbers in the range [1, 450] with a product of 450 is approximately 42.42.

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6 cm
4.4 cm
2 cm


determine the total surface area of the figure.

Answers

The total surface area of the given cuboid is 94.4 square centimeter.

Given that, the dimensions of box are length=4.4 cm, breadth=2 cm and Hight=6 cm.

We know that, the total surface area of cuboid = 2(lb+bh+lh)

= 2(4.4×2+2×6+4.4×6)

= 2×47.2

= 94.4 square centimeter

Therefore, the total surface area of the given cuboid is 94.4 square centimeter.

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