George is randomly selecting an outfit from his dresser. He has two pair of blue pants and four pair of black pants. In his closet there are two blue shirts, four green shirts, and one red shirt.
1. what is the probability he selects black pants and a green shirt?
2. what is the probability he selects a green or blue shirt?
3. what is the probability he does not choose a blue shirt?​

Tara's average heart rate from C. 1/30 ∫[30 to 60] h'(t) dt during the interval [30, 60] .

Average, also known as mean, is a measure of central tendency that represents the sum of a set of values divided by the number of values in the set. It is commonly used to represent the "typical" or "average" value in a set of data.

An interval refers to a range of values that lies between two endpoints. It represents a continuous set of values that falls within a specified range or interval. An interval can be either open or closed, depending on whether or not the endpoints are included in the set of values.

According to the given information:

The average rate of change of a function over an interval [a, b] is given by the integral of the derivative of the function over that interval divided by the length of the interval (b - a).

In this case, Tara's average heart rate from t = 30 to t = 60 is represented by the integral of the derivative of her heart rate function h(t) with respect to t, denoted as h'(t), over the interval [30, 60], divided by the length of the interval, which is 60 - 30 = 30.

So, the correct expression for Tara's average heart rate during the interval [30, 60] is 1/30 ∫[30 to 60] h'(t) dt.

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The σx (standard deviation) for this sample with n = 6 scores and a mean (m) of 24 cannot be determined without the individual scores or variance.

To calculate the standard deviation (σx) for a sample, we need the individual scores or at least the variance of the sample. The given information only provides the sample size (n = 6) and the mean (m = 24), which is insufficient to determine σx.

If we have the individual scores, we can follow these steps:

1. Calculate the mean (m) of the sample.
2. Subtract the mean from each score and square the result.
3. Find the average of these squared differences.
4. Take the square root of this average to get the standard deviation (σx).

Alternatively, if we have the variance (s²), we can simply take the square root of the variance to obtain the standard deviation (σx). In this case, without the necessary information, we cannot calculate the standard deviation.

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The domain would only include positive numbers.

Explanation:

The domain of a function represents the set of all possible input values for which the function is defined. In this case, the function represents the miles per gallon your car gets, which is a ratio of distance (miles) to fuel consumption (gallons).

Since distance and fuel consumption can both be expressed as positive real numbers, the domain of the function should include only positive real numbers. Integers and positive integers are too restrictive for the domain since it is possible to get non-integer values for miles per gallon, such as 24.5 miles per gallon. Therefore, the correct answer is that the domain would only include positive numbers.

The 99% confidence interval for the proportion of voters in the county who plan to vote for Ms. Miller is (0.652, 0.748).

A parameter, or fixed value calculated from each member of the population, is the population standard deviation.

A statistic is the sample standard deviation. This indicates that it is calculated using data from a small portion of the population. The sample standard deviation has greater fluctuation because it is dependent on the sample. As a result, the sample's standard deviation is higher than the population's.

The confidence interval for a proportion is given by the formula:

CI = p ± z*√(p(1-p)/n)

a) For 99% we have critical value is z = 2.576:

CI = 0.7 ± 2.576*√(0.7(1-0.7)/500)

CI = 0.7 ± 0.048

Therefore, the 99% confidence interval for the proportion of voters in the county who plan to vote for Ms. Miller is (0.652, 0.748).

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If the investment earns 5.3% income compounded monthly over 15 years, the money will increase to $2078.80.

We may use the compound interest calculation to determine the investment's future value:

FV = PV x (1 + r/n)^(n*t)

Where

Using the given values, we can plug them into the formula and solve for FV:

FV = $1000 x (1 + 0.053/12)^(12*15)

FV = $1000 x (1.0044167)^(180)

FV = $1000 x 2.0788

FV = $2078.80

Therefore, If the investment earns 5.3% income compounded monthly over 15 years, the money will increase to $2078.80.

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If the investment earns 5.3% income compounded monthly over 15 years, the money will increase to $2078.80.

We may use the compound interest calculation to determine the investment's future value:

FV = PV x (1 + r/n)^(n*t)

Where

Using the given values, we can plug them into the formula and solve for FV:

FV = $1000 x (1 + 0.053/12)^(12*15)

FV = $1000 x (1.0044167)^(180)

FV = $1000 x 2.0788

FV = $2078.80

Therefore, If the investment earns 5.3% income compounded monthly over 15 years, the money will increase to $2078.80.

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A filtered search can be considered a non-trivial step because it involves using specific criteria or parameters to narrow down the search results and retrieve more relevant information. This process helps users save time and effort by eliminating unrelated data and focusing on their desired content.

A filtered search can be considered a non-trivial step, depending on the context and the complexity of the filtering criteria. In general, a filtered search involves applying a set of parameters or criteria to refine and narrow down the results of a search query. This can require some level of expertise or knowledge about the data being searched, as well as the tools and methods used for filtering. Additionally, if the filtering criteria are highly specific or require a significant amount of customization, the process of designing and implementing the filter can be time-consuming and challenging. Therefore, while filtered searches are a common and essential feature of many search tools, they may still be considered a non-trivial step depending on the circumstances.

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The limit exists and its value is 5/2522.

To find the limit of the given function as (x,y) approaches (0,0), we can simplify the expression using algebraic manipulation and then substitute the values of x and y with 0. Here, we can use the difference of squares identity to simplify the expression as follows:

[tex](-2x^2 + 9y^2)(-2x^2 + 9y^2 + 1) - 1 = [(9y^2 - 2x^2)(2x^2 + 1 - 9y^2)] - 1[/tex]

[tex]= [18x^4 - 81y^4 + 4x^2 - 18x^2y^2 + 2x^2 - 9y^2] - 1[/tex]

[tex]= 20x^4 - 81y^4 - 18x^2y^2 - 9y^2[/tex]

Now, substituting x = 0 and y = 0 in the expression, we get:

lim (x,y)→(0,0) [tex][(-2x^2 + 9y^2)(-2x^2 + 9y^2 + 1) - 1]/(-2x^2 + 9y^2)[/tex]

= lim (x,y)→(0,0)[tex][20x^4 - 81y^4 - 18x^2y^2 - 9y^2]/(-2x^2 + 9y^2)[/tex]

= lim (x,y)→(0,0) [tex][(2x^2 + 9y^2)(10x^2 - 81y^2 - 9)]/(-2x^2 + 9y^2)[/tex]

Since the denominator approaches 0 as (x,y) approaches (0,0) but the numerator does not approach 0, the limit does not exist. Therefore, the answer is DNE.

To find the limit of the given function as (1,y,z) approaches (0,0,0), we can substitute the given values of x, y, and z in the expression and simplify it.

lim (1,y,z)→(0,0,0) [tex](3cy + 4y^2 + 5x^2)/(9x^2 + 16y^2 + 2522)[/tex]

[tex]= (3c0 + 40^2 + 51^2)/(91^2 + 16*0^2 + 2522)[/tex]

= 5/2522

Therefore, the limit exists and its value is 5/2522.

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In terms of the cosine of a positive acute angle, we can write cos(47π/36) as cos(13π/36).

To use a reference angle to write cos(47π/36) in terms of the cosine of a positive acute angle, follow these steps:

1. Determine the coterminal angle that lies in the first rotation (0 to 2π):

47π/36 = 13π/36 + 2π (since 2π = 72π/36)
So, the coterminal angle is 13π/36.

2. Identify the reference angle by finding the smallest positive angle between the coterminal angle and the x-axis:

Since 13π/36 lies in the first quadrant (0 to π/2), the reference angle is the same as the coterminal angle:
Reference angle = 13π/36.

3. Write cos(47π/36) in terms of the cosine of the positive acute angle:

cos(47π/36) = cos(13π/36).

So, the expression is cos(47π/36) = cos(13π/36).

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The vertex form tells us that the parabola opens upwards and its vertex is located at (-3, 4).

A parabola is a symmetrical U-shaped curve that is formed by the intersection of a plane parallel to the axis of a circular conical surface and a plane that cuts the cone.

The equation [tex]y - 4 = 2(x + 3)^2[/tex] is in vertex form, which is given by:

[tex]y - k = a(x - h)^2[/tex]

where (h, k) is the vertex of the parabola and "a" determines whether the parabola opens upwards or downwards.

Comparing the given equation to the vertex form, we can see that the vertex is located at (-3, 4), which means that the parabola is shifted 3 units to the left and 4 units up from the origin (0, 0).

The coefficient "a" is positive, which means that the parabola opens upwards. This can also be determined by noticing that the coefficient of the squared term (2) is positive. Therefore, the vertex form tells us that the parabola opens upwards and its vertex is located at (-3, 4).

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The values of b, angle C and angle A are 6.3, 49° and 80° respectively

The Cosine Rule says that the square of the length of any side of a given triangle is equal to the sum of the squares of the length of the other sides minus twice the product of the other two sides multiplied by the cosine of angle included between them.

b² = c²+a²-2abcos C

b² = 5²+8²-2(5)(8)cos 51

b² = 25+64-80cos51

b² = 89-50.35

b² = 39.35

b = 6.3

Using sine rule

8/sinA = 6.3/sin51

8× sin51 = 6.3sinA

6.2 = 6.3sin A

sinA = 6.2/6.3

sinA = 0.984

A = sin^-1( 0.984)

A = 80°( nearest degree)

angle C = 180-(51+80)

= 180-131

= 49°

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To find the radius (r) and height (h) of a cone using the slant height (l), you can use the Pythagorean Theorem and the formula for the lateral surface area of a cone.

The Pythagorean Theorem states that for a right triangle, the sum of the squares of the two shorter sides (legs) is equal to the square of the longest side (hypotenuse). In the case of a cone, the slant height (l) is the hypotenuse of a right triangle formed by the height (h) and the radius (r).

Therefore, we can write:

l^2 = r^2 + h^2

In addition, the lateral surface area of a cone can be calculated using the formula:

L = πrl

where L is the lateral surface area, π is the constant pi, r is the radius, and l is the slant height.

From this equation, we can solve for either r or h in terms of the other variable and the slant height l. For example, solving for r, we have:

r = L / (πl)

Substituting this expression for r into the Pythagorean Theorem equation, we get:

l^2 = (L^2 / π^2l^2) + h^2

Simplifying this equation, we get:

h^2 = l^2 - (L^2 / π^2l^2)

Taking the square root of both sides, we can solve for h:

h = √(l^2 - (L^2 / π^2l^2))

Similarly, we could solve for r using the equation for h instead.

In summary, to find the radius and height of a cone given the slant height, you can use the Pythagorean Theorem and the lateral surface area formula to derive equations for r and h in terms of the slant height l and the lateral surface area L.

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The measure of angle θ from the given right triangle is 65 degree.

In the given right triangle the legs of triangle are 9 units and 4.2 units.

We know that, tanθ = Opposite/Adjacent

tanθ = 9/4.2

tanθ = 2.14

θ = 64.98

θ ≈ 65°

Therefore, the measure of angle θ from the given right triangle is 65 degree.

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Here we have to prove the assumption that S not being a member of S leads to a contradiction.

Proof: -

We start by assuming that S is not a member of S. By definition, S is the set of all sets that do not contain themselves as a member. Therefore, if S is not a member of S, it means that it must contain itself as a member, since all sets in S do not contain themselves as a member. This leads to a contradiction, as it is impossible for a set to both contain and not contain itself as a member.

Hence, we can conclude that the assumption that S is not a member of S leads to a contradiction, and therefore, by definition of S, S is in S. This proves that S is a member of S and verifies the statement.

In summary, the assumption that S is not a member of S leads to a contradiction because it contradicts the definition of S as the set of all sets that do not contain themselves as a member. Hence, we can conclude that S is indeed a member of S.

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Here we have to prove the assumption that S not being a member of S leads to a contradiction.

Suppose S is not in S. By definition of S, if S is not in S, then S must be in S. Therefore, S is in S. However, we initially assumed that S is not in S. This creates a contradiction, as we have concluded that S is both in S and not in S simultaneously. Thus, the assumption that S is not a member of S leads to a contradiction.

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The boundedness and monotonicity of the sequence with a_n = (0.35)^n|. a) decreasing: bounded below by 0 and above by 0.35.

The given sequence is a_n = (0.35)^n. To determine its boundedness and monotonicity, let's analyze the terms and their progression.

Boundedness:
Since 0 < 0.35 < 1, raising 0.35 to increase powers will result in terms that are smaller than the previous term but always greater than 0. Thus, the sequence is bounded below by 0. The first term of the sequence is (0.35)^1 = 0.35, and all subsequent terms are smaller. Therefore, the sequence is also bounded above by 0.35.

Monotonicity:
As we established, each term in the sequence is smaller than the previous one, as we are multiplying by a factor between 0 and 1. This means that the sequence is decreasing.

Putting these two findings together, the correct answer is:

a) decreasing: bounded below by 0 and above by 0.35.

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The zeros of the polynomial are: , 3, and -23/2. Therefore, the y-intercept is (0, -15).

From the given information, we know that x= and x=3 are two zeros of the polynomial f(x) = 2x³ – 9x² + 17x – 19x – 15.

To find the remaining complex zeros, we can use polynomial long division or synthetic division. However, we first need to use the two zeros to factor the polynomial.

We can start by writing the polynomial in factored form as:

f(x) = (x - )(x - 3)(ax + b)

where (ax + b) represents the remaining factor.

To find the values of a and b, we can expand the above expression and compare the coefficients with the original polynomial:

f(x) = (x - )(x - 3)(ax + b)

= (ax² + bx - 3ax - 3b)x + (3abx - ab)

= (a)x³ + (b - 3a)x² + (3a - b)x - 3b

Comparing coefficients with the given polynomial, we get:

a = 2

b - 3a = 17

3a - b = -19

-3b = -15

Solving for these equations, we get:

a = 2

b = 23

Therefore, the remaining factor is (2x + 23).

Thus, the complete factorization of the polynomial is:

f(x) = (x - )(x - 3)(2x + 23)

Now, we can find the zeros of the polynomial by setting each factor equal to zero:

x - = 0 => x =

x - 3 = 0 => x = 3

2x + 23 = 0 => x = -23/2

Hence, the zeros of the polynomial are: , 3, and -23/2.

To sketch the graph of the polynomial, we can plot the x-intercepts (, 3, and -23/2) on the x-axis and the y-intercept (which we can find by setting x = 0) on the y-axis.

When x = 0, we get:

f(0) = 2(0)³ - 9(0)² + 17(0) - 19(0) - 15

= -15

Therefore, the y-intercept is (0, -15).

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The limit, lim (x,y)--(0,0)  (7x^3+8y^3)/(x^2+y^2) is 0.

Using polar coordinates, we have:

x = r cosθ and y = r sinθ

As (x, y) → (0, 0), we have r → 0 and 0 ≤ θ < 2π.

So we can write:

(7x^3 + 8y^3)/(x^2 + y^2) = (7r^3 cos^3θ + 8r^3 sin^3θ)/(r^2) = 7r cos^3θ + 8r sin^3θ

Since 0 ≤ cos^3θ ≤ 1 and 0 ≤ sin^3θ ≤ 1, we have:

-8r ≤ 7r cos^3θ + 8r sin^3θ ≤ 7r

By the squeeze theorem, as r → 0, the limit of the above expression is 0.

Therefore, the limit of the function as (x, y) approaches (0, 0) is 0.

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Answer:

we use the following Formula to anwer the above mentioned question;

(x - m)/given standard deviation =

Here,

x = 46

M = given mean value ( 52)

Now, put the given values in the above formula;

Hence the answer will be

(46 - 52) / 5 = - 1.2



Answer = -1.

Step-by-step explanation:

Paired data refers to a type of data analysis where two sets of data are paired together based on some criteria or characteristic.

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(a) The area of each rectangular room is given by the formula:

Area = length x width

Since the area of each room is 240 m², and the length of one room is x m, we can write:

240 = x × width of the first room

Therefore, the width of the first room is:

width of the first room = 240 / x m

The length of the other room is 4 m longer than x, so we can write:

length of the second room = x + 4 m

And using the formula for the area of the second room, we have:

240 = (x + 4) × width of the second room

Therefore, the width of the second room is:

width of the second room = 240 / (x + 4) m

(b) If the widths of the rooms differ by 3 m, we can write:

width of the second room - width of the first room = 3

Substituting the expressions for the widths obtained in part (a), we get:

240 / (x + 4) - 240 / x = 3

Multiplying both sides by x(x+4), we get:

240x - 240(x + 4) = 3x(x + 4)

Simplifying and rearranging terms, we get:

x^2 + 4x - 320 = 0

(c) To solve the quadratic equation x^2 + 4x - 320 = 0, we can use the quadratic formula:

x = (-b ± sqrt(b^2 - 4ac)) / 2a

where a = 1, b = 4, and c = -320.

Substituting these values, we get:

x = (-4 ± sqrt(4^2 - 4(1)(-320))) / 2(1)

Simplifying the expression under the square root, we get:

x = (-4 ± sqrt(1296)) / 2

x = (-4 ± 36) / 2

Therefore, x = -20 or x = 16.

Since the length of the room cannot be negative, we reject the solution x = -20, and conclude that x = 16 m.

(d) Using the value of x obtained in part (c), we can find the dimensions of each room:

Therefore, the perimeters of the rooms are:

The difference between the perimeters is:

64 - 62 = 2 m

Therefore, the difference between the perimeters of the rooms is 2 m.

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The height of the building roof is 22 feet, the ball will not reach the top of the building.

To determine whether the ball will reach the top of the building, we need to find the maximum height of the ball & see if it is greater than or equal to the height of the building roof

The equation h = -16t^2 + 30t + 6 represents the height of the ball (in feet) as a function of time (in seconds). To find the maximum height, we need to find the vertex of the parabolic function h.

The vertex of the parabolic function h = -16t^2 + 30t + 6 can be found using the formula:-

t = -b/2a

where a = -16, b = 30, & c = 6.

So, t = -30/(2*(-16)) = 0.9375 seconds.

To find the maximum height, we need to substitute this value of t into the equation h = -16t^2 + 30t + 6:-

h = -16(0.9375)^2 + 30(0.9375) + 6

h = 18.5625 feet

Therefore, the maximum height of the ball is 18.5625 feet

Since the height of the building roof is 22 feet, the ball will not reach the top of the building.

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Biased because many people did not like to be required to do anything. (B)

The question assumes that all high school students should be required to take a gym course without considering individual preferences or abilities. The bias lies in the assumption that everyone should be forced to do something they may not enjoy or excel at, which is not fair.

It is important to consider individual needs and interests when making educational requirements. The question could be revised to ask whether high schools should offer gym courses as an option for students to choose from, rather than mandating it for all.(B)

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By substitution ,  x² = 16 is the equation with a -4 solution.

Substitution in mathematics is the process of changing a variable with a number or expression. It is frequently employed to resolve equations or simplify expressions. For instance, if we know that x = 3 and we have the equation x + y = 7, we can replace x with 3 to get 3 + y = 7. So that y = 43, we may solve for y.

Calculus also use substitution to determine integrals' values. In order to simplify the integral and make it simpler to evaluate1, we replace the original variable in this case with a new variable.

There are two possible answers to the equation x²=25: x = 5 and x = -5. We can swap -4 for x in each equation to see if the equation holds true in order to identify the equations with a solution of -4.

For instance, the result is valid if we change x in the equation x² = 16 to (-4)² = 16. As a result, the equation x² = 16 has a solution of x = -4.

Similar to how 2x + 8 = 0 would be incorrect if we substituted -4 for x, we would get 2(-4) + 8 = 0. Thus, the equation 2x + 8 = 0 cannot be solved using the expression x = -4.

Consequently, x² = 16 is the equation with a -4 solution.

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If a researcher conducts a t-test using an alpha of .10, rather than .05, the critical value becomes less extreme. The critical value is the value at which the researcher decides to reject or fail to reject the null hypothesis.

In a t-test, the null hypothesis states that there is no significant difference between the means of two groups being compared.

When the alpha level is increased from .05 to .10, the researcher is allowing for a greater chance of making a type I error, which is rejecting the null hypothesis when it is actually true. This means that the critical value becomes less extreme, as it is now easier to reject the null hypothesis and find a significant difference between the means of the two groups.

However, it is important to note that increasing the alpha level also decreases the power of the test, or the ability to detect a true difference between the means of the two groups. Therefore, researchers must weigh the potential benefits and drawbacks of increasing the alpha level before deciding to do so.

In summary, if a researcher conducts a t-test using an alpha of .10, the critical value becomes less extreme, making it easier to reject the null hypothesis and find a significant difference between the means of the two groups being compared.

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This condition alone does not guarantee that n is an absolute pseudoprime; it still needs to pass a prime number test while being composite.

An integer n of the form (6k+1)(12k+1)(18k+1) is said to be an absolute pseudoprime if all three factors are prime. This type of integer is interesting because it behaves like a prime number in some ways, even though it may not be prime.

To understand why this is the case, we need to look at the properties of absolute pseudoprimes. One important property is that if n is an absolute pseudoprime, then it passes the Miller-Rabin test for all bases up to log2(n). This means that it is very difficult to tell whether or not n is actually prime, since it behaves like a prime in terms of the Miller-Rabin test.

Another interesting property of absolute pseudoprimes is that they are related to the Fermat pseudoprimes. In particular, if n is an absolute pseudoprime, then it is also a Fermat pseudoprime to base 2.

Overall, absolute pseudoprimes are an intriguing mathematical concept that have many interesting properties. While they may not be prime, they behave like prime numbers in some important ways, making them a valuable tool for number theorists and mathematicians.
An integer n is an absolute pseudoprime if it is a composite number (non-prime) that passes the prime number test, such as the Fermat primality test. In the given expression, n = (6k + 1)(12k + 1)(18k + 1), n would be considered an absolute pseudoprime if all three factors (6k + 1, 12k + 1, and 18k + 1) are prime numbers.

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Answer:

Here is the corrected code to find the normal vector to a plane defined by three points:

function planeNormal = getPlaneNormal(point1, point2, point3)

% Calculate first vector in plane by subtracting the first point's coordinates from the second point

inPlaneVec1 = point2 - point1;

% Calculate second vector in plane by subtracting the first point's coordinates from the third point

inPlaneVec2 = point3 - point1;

% Calculate vector normal to the plane by calculating the cross product of the two vectors lying in the plane

planeNormal = cross(inPlaneVec1, inPlaneVec2);

end

In this code, the cross product of the two vectors lying in the plane (inPlaneVec1 and inPlaneVec2) is calculated using the cross function in MATLAB. The resulting vector is the normal vector to the plane, which is returned as the output of the function.

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Answer:

82.89 cm to the nearest hundredth.

Step-by-step explanation:

Volume = πr^2h     where r = radius, h = height of the water.

r = 1/2 * 48 = 24 cm and the volume = 150 * 100 = 150,000cm^3 (as there are 1000 cm^3 in 1 litre).

So, substituting, we have:

150000 = π*24^2*h

h = 150000/π*24^2

  =  82.893 cm

Answer: almost have the same value

               median= 17

               mean= (13+14+14+15+16+17+17+18+19+21)/10 =16.4

Step-by-step explanation:

median-put numbers in order from least to greatest and find the middle value

mean- sum of terms/ number of terms

The sequence whose nth term is (2n+1)/(3n-1) converges to the number 2/3.

To use L'Hopital's rule, we need to take the limit of the ratio of the nth term and (n-1)th term as n approaches infinity.

Let a_n be the nth term of the sequence. lim (n->∞) a_n / a_(n-1) = lim (n->∞) (2n+1)/(3n-1) / (2n-1)/(3n-4) = lim (n->∞) [(2n+1)/(3n-1)] * [(3n-4)/(2n-1)] = lim (n->∞) [6n^2 - 5n - 4]/[6n^2 - 7n + 4]

By applying L'Hopital's rule, we can find that the limit of this ratio as n approaches infinity is 1. Thus, the sequence converges to the same limit as the ratio of consecutive terms, which is 2/3.

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The tangent line to the elliptical path at t = 13 is y = -0.24x + 0.352.

To find the tangent line to the elliptical path at t = 13, we need to find the derivative of y with respect to x at that point.

We have x(t) = 3cos(t) and y(t) = 4sin(t), so

dx/dt = -3sin(t)

dy/dt = 4cos(t)

Using the chain rule, we can find dy/dx as follows:

dy/dx = (dy/dt)/(dx/dt) = (4cos(t))/(-3sin(t)) = -(4/3) * cot(t)

At t = 13, we have x(13) = 3cos(13) ≈ -2.7 and y(13) = 4sin(13) ≈ 1.1.

To find the equation of the tangent line, we need a point on the line and its slope. The point is (-2.7, 1.1), and the slope is dy/dx evaluated at t = 13:

dy/dx|t=13 = -(4/3) * cot(13) ≈ -0.24

Therefore, the equation of the tangent line to the elliptical path at t = 13 is:

y - 1.1 = -0.24(x + 2.7)

Simplifying this equation gives:

y = -0.24x + 0.352

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Since the integral converges to a finite value (-81), the given integral is convergent.

In mathematics, an integral is a mathematical object that represents the area between a function and the x-axis on a graph.

It is a fundamental concept in calculus, and is used to find the total amount of something when we know its rate of change.

To determine if the integral is convergent or divergent, we can use the integral test:

If ∫f(x)dx converges, then the sum ∑f(n) also converges.

If ∫f(x)dx diverges, then the sum ∑f(n) also diverges.

Let's apply this test to the given integral:

∫[infinity] to 1 81 ln(x)/ x dx

We can integrate this by parts:

u = ln(x) dv = 1/x dx

du = 1/x dx v = ln|x|

∫[infinity] to 1 81 ln(x)/ x dx = 81 [ ln(x) ln|x| ] [infinity, 1] - 81 ∫[infinity] to 1 ln|x| / x² dx

The first term evaluates to 0 because ln(infinity) = infinity, so we are left with:

81 ∫1 to infinity ln|x| / x² dx

To evaluate this integral, we can use integration by parts again:

u = ln|x| dv = 1 / x² dx

du = 1 / x dx v = - 1 / x

81 ∫1 to infinity ln|x| / x² dx = 81 [ - ln|x| / x ] [1, infinity] + 81 ∫1 to infinity 1 / x² dx

The first term evaluates to 0 because ln(1) = 0, so we are left with:

81 ∫1 to infinity 1 / x² dx = 81 [ - 1 / x ] [1, infinity] = 81 / infinity - 81 / 1 = - 81

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Since the integral converges to a finite value (-81), the given integral is convergent.

In mathematics, an integral is a mathematical object that represents the area between a function and the x-axis on a graph.

It is a fundamental concept in calculus, and is used to find the total amount of something when we know its rate of change.

To determine if the integral is convergent or divergent, we can use the integral test:

If ∫f(x)dx converges, then the sum ∑f(n) also converges.

If ∫f(x)dx diverges, then the sum ∑f(n) also diverges.

Let's apply this test to the given integral:

∫[infinity] to 1 81 ln(x)/ x dx

We can integrate this by parts:

u = ln(x) dv = 1/x dx

du = 1/x dx v = ln|x|

∫[infinity] to 1 81 ln(x)/ x dx = 81 [ ln(x) ln|x| ] [infinity, 1] - 81 ∫[infinity] to 1 ln|x| / x² dx

The first term evaluates to 0 because ln(infinity) = infinity, so we are left with:

81 ∫1 to infinity ln|x| / x² dx

To evaluate this integral, we can use integration by parts again:

u = ln|x| dv = 1 / x² dx

du = 1 / x dx v = - 1 / x

81 ∫1 to infinity ln|x| / x² dx = 81 [ - ln|x| / x ] [1, infinity] + 81 ∫1 to infinity 1 / x² dx

The first term evaluates to 0 because ln(1) = 0, so we are left with:

81 ∫1 to infinity 1 / x² dx = 81 [ - 1 / x ] [1, infinity] = 81 / infinity - 81 / 1 = - 81

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