Using the substitution u=2x+1, on [0,2] the integral of sqrt(2x+1)dx is equivalent to

Answers

Answer 1

The integral of √(2x+1)dx over [0,2] is equivalent to (1/3) (5√(5) - 1).

What is integration?

Integration is a mathematical operation that is the reverse of differentiation. Integration involves finding an antiderivative or indefinite integral of a function.

To use the substitution u = 2x + 1, we need to express dx in terms of du. We can differentiate both sides of the substitution equation with respect to x:

du/dx = 2

Solving for dx, we get:

dx = du/2

We can use this to rewrite the integral:

∫(0 to 2) √(2x + 1) dx

= ∫(u(0) to u(2)) √(u) (du/2)

where u(0) = 2(0) + 1 = 1 and u(2) = 2(2) + 1 = 5.

= (1/2) ∫(1 to 5) √(u) du

We can now integrate with respect to u:

= (1/3) [(5√(5) - √(1))] from 1 to 5

= (1/3) (5√(5) - 1)

Therefore, the integral of √(2x+1)dx over [0,2] is equivalent to (1/3) (5√(5) - 1).

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Related Questions

The triangle shown below has vertices A(-12. -10), B(15, -10), and C(10, 5). If the triangle is dilated and the new image of point C lies at (8, 4), where is the resulting image of point B after the dilation?​

Answers

Answer: 13,-11

Step-by-step explanation: if it's dilation there's a correlation between the two so I think if you just subtract the c from the c now and get 2,1 and you then subtract that from b you should get your answer

the probability distribution for a project completion has a variance of 2.78 and a critical path duration of 30 weeks. if the project manager wants to give a 90% confidence level estimation of how long the project would take, he would present an estimate of:

Answers

As per the probability, the project manager can estimate that the project will take 32.28 weeks to complete with a 90% confidence level.

To convert the project completion distribution to the standard normal distribution, the project manager needs to calculate the z-score, which represents the number of standard deviations away from the mean. The formula for the z-score is:

z = (x - μ) / σ

Where x is the completion time, μ is the mean of the distribution (30 weeks), and σ is the square root of the variance (√(2.78)).

Using a standard normal distribution table or calculator, the project manager can find the z-score corresponding to the 90th percentile, which is approximately 1.28.

To find the completion time that would be exceeded with a probability of only 10%, the project manager can use the inverse of the z-score formula:

x = z * σ + μ

Plugging in the values, the estimated completion time with a 90% confidence level is:

x = 1.28 * √(2.78) + 30 = 32.28 weeks

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Help Please
Answer Part A and Part B clearly to win brainly
Show your work (I want to see more numbers than words)

Answers

Answer:

Part A:

[tex]3 {x}^{10} = 3(x)(x)(x)(x)(x)(x)(x)(x)(x)(x) [/tex]

[tex]48 {x}^{2} = 2(2)(2)(3)(x)(x)[/tex]

So the GCF = 3x^2.

Part B:

[tex]3 {x}^{10} - 48 {x}^{2} = [/tex]

[tex]3 {x}^{2} ( {x}^{8} - 16) = [/tex]

[tex]3 {x}^{2} ( {x}^{4} - 4)( {x}^{4} + 4) = [/tex]

[tex]3 {x}^{2} ( {x}^{2} - 2)( {x}^{2} + 2)(( {x}^{4} + 4 {x}^{2} + 4) - 4 {x}^{2} ) = [/tex]

[tex]3 {x}^{2} ( {x}^{2} - 2)( {x}^{2} + 2)( {( {x}^{2} + 2)}^{2} - {(2x)}^{2} ) = [/tex]

[tex]3 {x}^{2} ( {x}^{2} - 2)( {x}^{2} + 2)( {x}^{2} - 2x + 2)( {x}^{2} + 2x + 2)[/tex]

how to find the perimeter and area of an H shaped dodecagon with any numbers?

Answers

You can split the H shape into smaller parts like 3 rectangles.

In ABC,C =90° , AB = 2x cm, BC = (x + 3)cm and AC = (x – 2)cm.
(a) Form an equation in x and show that it
reduces to 2x² – 2x – 13 = 0
(b) Solve this equation, giving your answers
correct to two decimal places.

Answers

The value of x is 3.10

What is Pythagoras theorem?

Pythagoras theorem states the sum of the squares of the leg of a right triangle is equal to the square of hypotenuse.

c² = a² + b²

Therefore,

(2x)² = (x-2)² +( x+3)²

4x² = x²- 4x +4 + x²+6x +9

collecting like terms

4x²-x²-x² -6x+4x -13 = 0

2x²-2x-13 = 0

Using formula method

x = (-b ± √b²-4ac)/2a

x = -(-2) ±√ -2)²-4× 2 × -13)/4

= 2±√ 4+104)/4

= 2±√108)/4

x = (2+10.39)/4 or (2-10.39)/4

x = 3.10 or -2.10

therefore the value of x is 3.10

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Find the missing side.
X
11
7 x = [?]
Round to the nearest tenth.
Enter

Answers

A right angled triangle with height = 7, base = 11, by using the Pythagorean theorem, we can calculate the hypotenuse is approximately 13. Therefore, the missing side, x = 13.

In a right angled triangle, using the Pythagorean theorem: sum of the squares of the base and height is equal to the square of the hypotenuse, we can find the hypotenuse x.

[tex]x^2 = 7^2 + 11^2[/tex]

[tex]x^2 = 49 + 121[/tex]

[tex]x^2 = 170[/tex]

Taking the square root of both sides, we get:

x ≈ 13.0384

Rounding this to the nearest tenth, we get:

x ≈ 13.0

Therefore, the length of x is approximately 13.0 units (rounded to the nearest tenth).

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The total area is 202.5 inches. Solve for x.

Answers

Answer:

(5x)(2x) = 202.5

10x^2 = 202.5

x^2 = 20.25, so x = 4.5

Suppose that the correlation between educational level attained and yearly income is +0.68. Thus we know that

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Suppose that the correlation between educational level attained and yearly income is +0.68. This indicates that there is a positive and strong relationship between educational level and yearly income.

It means that as the level of education attained increases, the yearly income also tends to increase. However, it is important to note that correlation does not imply causation, and there could be other factors that contribute to the relationship between education and income.

Based on the provided correlation coefficient of +0.68 between educational level attained and yearly income, we know that there is a positive and moderately strong relationship between the two variables. As a person's education level increases, their yearly income is also likely to increase.

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Let be a binominal random variable with =9 and p=0.2. What is the probability of four successes; that is, P(=4)?

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The probability of four successes in this binomial distribution is 0.2668, or approximately 26.68%. This means that if we conduct 9 trials with a 20% chance of success on each trial, we would expect to get exactly 4 successes with a probability of 0.2668.

To find the probability of four successes in a binomial random variable, we use the formula for the probability mass function (PMF) of a binomial distribution:

P(X=k) = (n choose k) * [tex]p^k[/tex] * (1-p)[tex]^(n-k)[/tex]

where n is the number of trials, p is the probability of success on each trial, k is the number of successes, and (n choose k) is the binomial coefficient, which represents the number of ways to choose k successes from n trials.

In this case, we have n = 9, p = 0.2, and k = 4. So, we can plug these values into the formula:

P(X=4) = (9 choose 4) * 0.[tex]2^4[/tex] * (1-0.2)[tex]^(9-4)[/tex]

= (126) * 0.[tex]2^4[/tex] * 0[tex].8^5[/tex]

= 0.2668

Therefore, the probability of four successes in this binomial distribution is 0.2668, or approximately 26.68%. This means that if we conduct 9 trials with a 20% chance of success on each trial, we would expect to get exactly 4 successes with a probability of 0.2668.

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2 If the probability that it will rain tomorrow is what is the probability that it will not rain tomorrow?

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If the probability of rain is P, because there are only two outcomes, we know that the probability that will not rain is 1 - P

What is the probability that it will not rain tomorrow?

Let's say that the probability of rain tomorrow is P. There are two possible events here:

Tomorrow rains.Tomorrow does not rain.

Then the second event is the negation of the first (Thus the probability is the composition), and notice that one of these events will happen, then the sum of the probabilities must be 1, then the probability that tomorrow will not rain is:

probability of not rain = 1 - P

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suppose a sequence (xn) of positive real numbers converges to a positive number. show that the set fxngis bounded below by a positive number. g

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Let (xn) be a sequence of positive real numbers that converges to a positive number. We aim to show that the set {x_n : n ∈ N} is bounded below by a positive number. Since the sequence converges to a positive number, we can choose an ε > 0 such that for all sufficiently large n, |x_n - L| < ε, where L is the limit of the sequence. By considering the inequality x_n > L - ε, we can see that all terms of the sequence are greater than or equal to a positive number, thereby establishing the boundedness from below.

Since the sequence (xn) converges to L, for any ε > 0, there exists a positive integer N such that for all n ≥ N, |x_n - L| < ε. This means that eventually, all terms of the sequence will be arbitrarily close to L.

Now, consider the inequality x_n > L - ε. For all n ≥ N, we have |x_n - L| < ε, which implies L - ε < x_n. Since L and ε are positive, we can rearrange the inequality to get x_n > L - ε.

Therefore, for all n ≥ N, we have x_n > L - ε, and since ε can be chosen to be any positive number, we can conclude that all terms of the sequence (xn) are greater than or equal to L - ε, which is a positive number.

Hence, the set {x_n : n ∈ N} is bounded below by a positive number, as desired.

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kyle will use four identical unit cubes to create a solid. each cube must be glued to at least one other cube. two cubes may only be glued together in such a way that a face of one cube exactly covers a face of the other cube. how many distinct solids could kyle create? two solids are considered to be the same if one solid can be repositioned to match the other solid.

Answers

Kyle may make ten unique solids by utilizing four identical unit cubes.

To create a solid, Kyle can glue the cubes together in different configurations.

Let's break down the possibilities based on the number of cubes that are glued together.

⇒ If all four cubes are glued together, there is only one possible solid.

⇒ If three cubes are glued together, there are four possible configurations: a straight line, an L-shape, a T-shape, and a corner shape.

⇒ If two cubes are glued together, there are three possible configurations: side by side, stacked, or at a right angle.

⇒ If only one cube is glued to another, there are two possible configurations: attached side to side or attached face to face.

To find the total number of distinct solids, we need to add up all the possible configurations.

⇒  1 (all four cubes glued together) + 4 (three cubes glued together) + 3 (two cubes glued together) + 2 (one cube glued to another)

So the answer is 10 distinct solids that Kyle can create using four identical unit cubes.

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solve by completing the square
3x^2-12x+36=0

Answers

Completing the squares for our quadratic equation we will get:

(3x - 2)^2 + 32 = 0

How to complete squares?

Here we have the quadratic equation:

3x^2-12x+36=0

We can rewrite our quadratic equation as follows:

3x^2 - 2*2*3x + 36= 0

Now, remember that the perfect square trinomial is:

(a + b)^2 = a^2 + 2ab + b^2

We can see that a = 3x and b = -2, then we need to add and subtract (-2)^2 = 4

We will get:

3x^2 - 2*2*3x + 4 - 4 + 36= 0

(3x - 2)^2 -4 + 36  =0

(3x - 2)^2 + 32 = 0

That is the equation with squares complete.

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how many ways are there for the club members to line up in which the president is not next to the vp?

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(a) Number of ways to line up 10 members =10! =3,628,800 number of ways so that VP and president are next to each other 2.9!

(b) To line up the ten people if the VP must be beside the president in the photo 725,760 ways.

(c) To line up the ten people if the president must be next to the secretary and the VP must be next to the treasure is:  161,280 ways.

a). To line up the ten people with no restrictions in arrangement; we have;

n! = 10! = 10 × 9 × 8 × 7 × 6 × 5 × 4 × 3 × 2 × 1

= 3,628,800 ways.

b). To line up the ten people if the VP must be beside the president in the photo;

then, there are 9 entities as the VP and president are considered as one entity. However, there are 2! ways to arrange the president and vp, we have:

=> 9! × 2!

=  725,760 ways.

c). To line up the ten people if the president must be next to the secretary and the VP must be next to the treasure we have:

= 8! × 2! × 2!

= 161,280 ways.

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The given question is incomplete, complete question is:

ten members of a club are lining up in a row for a photograph. the club has one president, one vp, one secretary, and one treasurer. (a) how many ways are there to line up the ten people? (b) how many ways are there to line up the ten people if the vp must be beside the president in the photo? (c) how many ways are there to line up the ten people if the president must be next to the secretary and the vp must be next to the treasurer?

Find the values of W and X that make NOPQ a parallelogram.
( w+7, 5w-5), (3/2x, 3)

Answers

The values of W and X that make NOPQ a parallelogram are:

W = -5w + 11

X = 3x

What is parallelogram?

A quadrilateral with two sets of parallel sides is referred to as a parallelogram. In a parallelogram, the opposing sides are of equal length, and the opposing angles are of equal size.

To determine the values of W and X that make NOPQ a parallelogram, we need to find the conditions under which the opposite sides of the quadrilateral are parallel.

The coordinates of the points N, O, P, and Q are given as follows:

N: (w+7, 5w-5)

O: (3/2x, 3)

P: (?, ?)

Q: (?, ?)

For NOPQ to be a parallelogram, the vector from N to O should be equal to the vector from P to Q, and the vector from O to P should be equal to the vector from Q to N.

The vector from N to O is:

NO = (3/2x - (w+7), 3 - (5w-5))

   = (3/2x - w - 7, -5w + 8)

The vector from O to P should be equal to the vector from Q to N. Thus:

OP = (P_x - (3/2x), P_y - 3)

QN = ((w+7) - Q_x, (5w-5) - Q_y)

Equating the corresponding components, we get the following equations:

3/2x - w - 7 = P_x - (3/2x)

-5w + 8 = P_y - 3

w + 7 = (w+7) - Q_x

5w - 5 = (5w-5) - Q_y

Simplifying these equations, we find:

P_x = 3x

P_y = -5w + 11

Q_x = w + 7

Q_y = 5w

Therefore, the values of W and X that make NOPQ a parallelogram are:

W = -5w + 11

X = 3x

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find the greatest common factor for the list of terms 30x^(3),110x^(4),60x^(5) answer in the same way as the example. example: 60

Answers

Answer:

To find the greatest common factor (GCF) of the list of terms 30x^3, 110x^4, and 60x^5, we can begin by factoring each term into its prime factors:

30x^3 = 2 * 3 * 5 * x * x * x

110x^4 = 2 * 5 * 11 * x * x * x * x

60x^5 = 2 * 2 * 3 * 5 * x * x * x * x * x

Next, we can identify the common factors among the three terms. These are 2, 5, and x^3. The GCF is the product of these common factors:

GCF = 2 * 5 * x^3 = 10x^3

Therefore, the greatest common factor of 30x^3, 110x^4, and 60x^5 is 10x^3.

Step-by-step explanation:

suppose that the distribution for total amounts spent by students vacationing for a week in florida is normally distributed with a mean of 650 and a standard deviation of 120 . suppose you take a simple random sample (srs) of 30 students from this distribution. what is the probability that a srs of 30 students will spend an averag

Answers

the probability of getting a sample mean of 96 or lower is essentially zero

We can use the central limit theorem to approximate the sampling distribution of the sample mean as normal with mean μ = 650 and standard deviation σ/√n = 120/√30 ≈ 21.87, where n = 30 is the sample size.

Then, we want to find the probability that the sample mean is less than a certain value. We can standardize this value using the z-score:

z = (x - μ) / (σ/√n) = (96 - 650) / (120/√30) ≈ -16.07

Using a standard normal distribution table or calculator, we can find that the probability of getting a z-score of -16.07 or lower is essentially zero (less than 0.0001).

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A chi-square goodness-of-fit test was conducted to determine whether the data provide convincing evidence that the distribution has changed. the test statistic was 10.13 with a p-value of 0.0175. What is true?

Answers

We conclude that there is convincing evidence to reject the null hypothesis. Therefore, the data provide convincing evidence that the distribution has changed.

Based on the given information, a chi-square goodness-of-fit test was conducted to determine whether there is convincing evidence that the distribution has changed. The test statistic is 10.13 and the p-value is 0.0175.

To interpret these results, we need to compare the p-value to a predetermined significance level (α), which is usually set at 0.05.

Step 1: Compare the p-value to the significance level
- If the p-value ≤ α, then there is convincing evidence to reject the null hypothesis (i.e., the distribution has changed).
- If the p-value > α, then there is not enough evidence to reject the null hypothesis (i.e., no convincing evidence that the distribution has changed).

In this case, the p-value (0.0175) is less than the typical significance level (0.05)

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A farmer has 8 horses and 12 cows. He put 1/4 of the horses in the barn and 1/4 of cows in the barn. Did he put more horses or cows in the barn? explain

Answers

Answer:

There were 8 cows and 12 horses at a farm. 5 horses ran away. How many horses were left?

7 because it's not saying anything about cows. Only that there are 8 so if there were 12 horses and 5 ran away, 12-5=7 because there were 12 horses at a farm and 5 ran away so that would equal 7

Therefore, The answer is 7.

find the zeros and multiplicities of the polynomial f(x) = (x-5)^6 (x²-25)^7. the zeros are x = _______ (separate your answers by commas).the zero x = _____ has multiplicity_____

Answers

The zeros of the polynomial f(x) are the values of x that make f(x) equal to zero. We can find the zeros of f(x) by setting the polynomial equal to zero and solving for x:

f(x) = (x-5)²6 (x²-25)²7 = 0

The polynomial f(x) has two factors, each of which contributes to the zeros of the polynomial:

Factor 1: (x-5)²6

This factor is equal to zero when x-5=0, or x=5. Therefore, the polynomial f(x) has a zero of multiplicity 6 at x=5.

Factor 2: (x²-25)²7

This factor is equal to zero when x²-25=0, or x=±5. Therefore, the polynomial f(x) has two more zeros at x=±5. Each of these zeros has a multiplicity of 7, since the factor (x²-25) is raised to the 7th power.

Therefore, the zeros of f(x) are x=5 and x=±5, with multiplicities of 6 and 7, respectively.In summary

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a scientist uses a submarine to study ocean life. she begins at sea level, which is an elevation of 0 feet. she travels straight down for 102 seconds at a speed of 4.2 feet per second. she then ascends for 112 seconds at a speed of 1.9 feet per second. at this point, how many feet is she below sea level?

Answers

The depth of the scientist below sea level after traveling downward for 102 seconds can be found by multiplying her speed by the time she traveled:

Distance = Speed x Time

Distance = 4.2 feet/second x 102 seconds

Distance = 428.4 feet

Since she traveled straight down, this distance is also her depth below sea level.

Next, we need to find how far she ascended. The distance she traveled upward can be found in the same way:

Distance = Speed x Time

Distance = 1.9 feet/second x 112 seconds

Distance = 212.8 feet

However, since she traveled upward, this distance is subtracted from her previous depth:

Final depth below sea level = Initial depth below sea level - Distance traveled upward

Final depth below sea level = 428.4 feet - 212.8 feet

Final depth below sea level = 215.6 feet

Therefore, the scientist is 215.6 feet below sea level at this point.

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The average annual return over the period 1886-2006 for stocks that comprise the s&p 500 is 10%, and the standard deviation of returns is 20%. Based on these numbers, what is a 95% confidence interval for 2007 returns?.

Answers

The 95% confidence interval for 2007 returns is -29.2% to 49.2%. We can calculate it in the following manner.

To calculate the 95% confidence interval for 2007 returns of stocks in the S&P 500, we first need to determine the margin of error. We can use the formula:

Margin of Error = z* (standard deviation / sqrt(n))

Where z* is the z-score for the desired level of confidence, which is 1.96 for a 95% confidence interval, standard deviation is 20%, and n is the sample size (which we assume to be 1).

So, Margin of Error = 1.96 * (0.20 / sqrt(1)) = 0.392

Next, we need to determine the range within which the true population mean is likely to lie. We can calculate this by adding and subtracting the margin of error from the sample mean. In this case, the sample mean is the average annual return over the period 1886-2006, which is 10%.

So, the 95% confidence interval for 2007 returns is:

10% +/- 0.392 or 9.608% to 10.392%

Therefore, we can be 95% confident that the true average annual return for stocks in the S&P 500 for the year 2007 falls between 9.608% and 10.392%.

Based on the provided information, the average annual return for stocks in the S&P 500 from 1886-2006 is 10%, and the standard deviation is 20%. To calculate a 95% confidence interval for 2007 returns, we can use the formula:

Confidence Interval = Mean ± (1.96 * Standard Deviation)

In this case, the mean is 10%, and the standard deviation is 20%. Plugging in these values, we get:

Confidence Interval = 10% ± (1.96 * 20%)

Confidence Interval = 10% ± 39.2%

Thus, the 95% confidence interval for 2007 returns is -29.2% to 49.2%.

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help ?? due any minuet

Answers

We can see here that a proper use of unit multipliers to convert 24 square feet per minute to square inches per second is: B. 12 ft²/1 min × 1 ft/12 in. × 1 ft/12 in. × 1 min/60 sec.

What is a multiplier?

A multiplier in mathematics is a factor that is multiplied by another quantity or number. It is employed to change the value of a number or quantity by a specific percentage.

We can see here that showing a proper use of unit multipliers to convert 24 square feet per minute to square inches per second, we will have:

Multiplying by a conversion factor to cancel out "feet" and convert to "inches". Since 1 foot = 12 inches, we can use the conversion factor: 1 ft/12 in.

Thus, we have that the multiplier will be: 12 ft²/1 min × 1 ft/12 in. × 1 ft/12 in. × 1 min/60 sec.

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College researchers wanted to know under what conditions people are more likely to complete and return a survey. As part of a study, the researchers prepared three sets of identical surveys and used three methods of delivering and returning the surveys. The methods are described as follows.
In Class: The surveys were given to students in a class, and students were asked to return completed surveys to their instructor.
Psychology: The surveys were given to students participating in a psychology experiment, and students were asked to return completed surveys to a collection box in the hallway of the psychology building.
Dining Hall: The surveys were given to students in the dining hall, and students were asked to return completed surveys to a collection box outside the dining hall.
The graph shows the percent of surveys returned and not returned for each delivery method.
Which statement about delivery method and rate of survey return is supported by the graph?
A
There is a positive association between delivery method and rate of return.
B
There is a negative association between delivery method and rate of return.
C
The number of surveys given using the Dining Hall delivery method was less than the number given using either of the other delivery methods.
D
The Psychology delivery method displays the most symmetric results; the other delivery methods display skewed results.
E
The In Class delivery method had the greatest rate of return, and the Dining Hall delivery method had the least rate of return.

Answers

The probability of return was the least for the Dining hall method and greatest for the Class delivery method. Therefore, E is the correct answer here.

How to solve

There cannot be a positive or negative association between a categorical and a numerical variable. here the delivery method is a categorical variable.

We cannot determine what the total number for any of the delivery methods was as we are only given the conditional probability of whether they were returned or not.

We can clearly see that the probability of return was the least for the Dining hall method and greatest for the Class delivery method. Therefore, E is the correct answer here.

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(d) If 1.6 thousand gallons are in stock at the beginning of the week and no new supply is due in during the week, how much of the 1.6 thousand gallons is expected to be left at the end of the week? [Hint: Let h(x) = amount left when demand = x.] (Round your answer to three decimal places.)

Answers

To find the amount of the 1.6 thousand gallons left at the end of the week, we need to determine the demand for the week and subtract it from the initial stock.

First, let's define the function h(x) as the amount left when the demand is x.

1. Identify the demand function for the week. This information is missing in your question, but let's assume it is given as d(x).

2. Calculate the demand for the week by evaluating the function d(x) at the end of the week. Let's assume the week is represented by the variable "t". Evaluate d(t) to find the demand for the week.

3. Subtract the demand for the week from the initial stock to find the remaining amount: h(t) = 1.6 thousand gallons - d(t).

4. Round your answer to three decimal places to get the final result.

Without the specific demand function, I cannot provide a numerical answer.

However, you can follow these steps with the given demand function to find the amount of the 1.6 thousand gallons expected to be left at the end of the week.

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What is the value of x?

Answers

ans. option (a) 4

we take components of 4[tex]\sqrt{2}[/tex]

so 4[tex]\sqrt{2}[/tex] sin 45

putting values we get 4[tex]\sqrt{2}[/tex] /[tex]\sqrt{2}[/tex]

thus the answer is 4

SHOW WORK FOR THE EQUATION ABOVE THE QUESTION PLEASE!! Show me how you got the answer.

Answers

Answer:

The figure is trapizium so opposite sides are suplementary which is their sum =180

112° + x = 180°

x = 180° - 112° =68°

Hope it is correct !

Gavyn was thinking of a number. Gavyn subtracts 9 from it and gets an answer of 6. 3. What was the original number?

Answers

The original number that Gavyn was thinking of was 15.3.

What is the original number?

Let x be the original number.

According to the problem, when Gavyn subtracts 9 from x, he gets an answer of 6.3. This can be written as;

x - 9 = 6.3

To solve for x, we can add 9 to both sides of the equation;

x - 9 + 9 = 6.3 + 9

Simplifying the right side gives;

x = 15.3

Therefore, the original number that Gavyn was thinking of was 15.3.

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Jane is painting a wooden sculpture in the shape of the pyramid shown below.

In order to know if she has enough paint, Jane needs to know the total area of the surfaces she will be painting.

What is the surface area of the pyramid Jane is painting?
Area of the base =

Perimeter of the base =

l or slant height =

TOTAL SURFACE AREA

Answers

The total surface area of the pyramid is 817 ft squared.

How to find the surface area of the pyramid?

The surface area of the pyramid Jane is painting can be calculated as follows:

area of the pyramid = A + 1 / 2 ps

where

A = area of the basep = perimeter of the bases = slant height

Therefore,

A = 19² = 361 ft²

p = 4(19) = 76 ft

s = 12 ft

Total surface area of the pyramid =  361 + 1 / 2 (76)(12)

Total surface area of the pyramid = 361 + 456

Total surface area of the pyramid = 817 ft²

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which of the following run-time complexity orders ranks between the other two? group of answer choices o(2^n) exponential none of these o(n^2) quadratic (or polynomial) o(log n) logarithmic time

Answers

As per the question, the complexity that ranks between the other two is O(n^2) - Quadratic (or Polynomial).

How to solve

As we compare the run-time complexities, it's crucial to examine the function’s growth with an increase in input size (n).

Let us analyze the growth rates:

Exponential (O(2^n)): The function doubles for each increment in n. This is very fast growth.

Quadratic (O(n^2)): The function grows proportional to the square of n. This is slower growth compared to exponential but faster than logarithmic.

Logarithmic (O(log n)): The function grows very slowly as n increases. The growth rate is less than linear (O(n)).

So the ranking, from slowest to fastest growth, is:

O(log n) - Logarithmic

O(n^2) - Quadratic (or Polynomial)

O(2^n) - Exponential

As per the question, the complexity that ranks between the other two is O(n^2) - Quadratic (or Polynomial).


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