A line up for tickets to a local concert has an average waiting time of 40 minutes with a standard deviation of 7 minutes. If 5000 tickets buyers were in
line, how many of them would expect to wait for less than 47 minutes?

Answer:

E. 14

Step-by-step explanation:

The shape is clearly a rectangle, from the units given

Perimeter= distance round a shape

Perimeter= 5+5+2+2=14

Answer:

Kyle purchasing the platter for $19 and matching bowls for $8 each.

Step-by-step explanation:

Discrete graphs are such that the in-between values don't make sense. You have specific prices that can be achieved, depending on the number of bowls purchased ($19 for 0 bowls, $27 for 1, $35 for two, etc), but you can't pay $31 for 2.5 bowls.

The other situations are all continuous, because the in-between values make sense.

The correct answer is option (A) Kiley bought a platter for $19 and several matching bowls that were $8 each

The steps are as follow:

So the correct answer is option (A) Kiley bought a platter for $19 and several matching bowls that were $8 each

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The matrices is now in upper triangular form. The determinant is the product of the diagonal entries: det(∣∣​33−66​4008​−31−4−4​−1−33−1​∣∣​) = (3)(0)(8) = 0 5. Sure, I'd be happy to help!

For Exercise 5:

To find the determinant of the matrix ∣∣​10−13​−110−3​−355−2​0433​∣∣​ by row reduction to echelon form, we can use elementary row operations to transform the matrix into an upper triangular form, where the determinant is simply the product of the diagonal entries.

Here are the steps we can follow:

1. Add -1 times the first row to the second row:

∣∣​10−13​0−4​−355−2​0433​∣∣​

2. Add -3 times the first row to the third row:

∣∣​10−13​0−4​0−7−5​0433​∣∣​

3. Add 5 times the second row to the third row:

∣∣​10−13​0−4​0−70​0433​∣∣​

4. Finally, multiply the diagonal entries to get the determinant:

det(∣∣​10−13​−110−3​−355−2​0433​∣∣​) = (1)(-4)(0) = 0

Therefore, the determinant of the matrix is 0.

For Exercises 11 and 13:

To compute the determinants of the matrices ∣∣​33−66​4008​−31−4−4​−1−33−1​∣∣​ and ∣∣​246−6​57−27​46−47​1200​∣∣​ using a combination of row reduction and cofactor expansion, we can use the following steps:

1. Use row reduction to transform the matrix into an upper triangular form. This can be done using the same elementary row operations as in Exercise 5.

2. Once the matrix is in upper triangular form, the determinant is simply the product of the diagonal entries.

3. If desired, we can use cofactor expansion along a row or column to double-check our answer.

For example, let's use these steps to find the determinant of the matrix ∣∣​33−66​4008​−31−4−4​−1−33−1​∣∣​:

1. Add -3 times the first row to the second row:

∣∣​33−66​4008​−100−14​−1−33−1​∣∣​

2. Add 4 times the first row to the third row:

∣∣​33−66​4008​−100−14​11−135​∣∣​

3. Add -5 times the second row to the third row:

∣∣​33−66​4008​−100−14​01−121​∣∣​

4. The matrix is now in upper triangular form. The determinant is the product of the diagonal entries:

det(∣∣​33−66​4008​−31−4−4​−1−33−1​∣∣​) = (3)(0)(8) = 0

5. To double-check our answer using cofactor expansion, we can choose to expand along the first row:

det(∣∣​33−66​4008​−31−4−4​−1−33−1​∣∣​) = 3 det(∣∣​−14−4​−33−1​∣∣​) - (-6) det(∣∣​1008​−33−1​∣∣​) + 4 det(∣∣​4008​−31−4​∣∣​)

= (3)((-14)(-1) - (-4)(-33)) - (-6)((10)(-1) - (-33)(8)) + (4)((40)(-4) - (8)(-3))

= 0

Therefore, our answer is correct. We can follow the same steps to find the determinant of the matrix ∣∣​246−6​57−27​46−47​1200​∣∣​.

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Answer:

The correct answer is: B. The initial values of the two functions are different, and the rates of change of the two functions are the same

Step-by-step explanation: Trust me

Answer: : B. The initial values of the two functions are different, and the rates of change of the two functions are the same

Step-by-step explanation: on edgenuidy

Answer:

25 %

Step-by-step explanation:

Error = (actual - predicted) / (predicted)

= (250-200) / 200

= 50 / 200

= 0.25

multiply by 100 to conver to a percent

25 %

The value of the error for Z, where x = 5.9 +/- 0.5 and y = 2.1 +/- 0.2, with one decimal place is 4.

To calculate the error in Z, we need to consider the uncertainties in both x and y. The error in Z can be determined by propagating the uncertainties using the formula for error propagation.

In this case, Z is given by the equation Z = x/y. To propagate the uncertainties, we use the formula for relative error:

ΔZ/Z = sqrt((Δx/x)^2 + (Δy/y)^2)

Given the uncertainties Δx = 0.5 and Δy = 0.2, and the values x = 5.9 and y = 2.1, we substitute these values into the formula:

ΔZ/Z = sqrt((0.5/5.9)^2 + (0.2/2.1)^2) = sqrt(0.0089 + 0.0181) ≈ 0.134

Multiplying this value by 100 to convert it to a percentage, we get approximately 13.4%. Rounding to one decimal place, the value of the error is 4.

Therefore, the value of the error for Z, with one decimal place, is 4.

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Answer:

I am not sure but i think the midpoint is 4.5 and 6

We would expect about 4 students to respond that rock is their favorite music if we randomly select 20 students from the population.

We need to first calculate the proportion of students in the population who prefer rock music.

We can do this by adding up the number of students who prefer rock music in both samples, and then dividing by the total sample size:

Number of students who prefer rock music = 19 + 23 = 42

Total sample size = 100 + 100 = 200

Proportion of students who prefer rock music = 42 / 200 = 0.21

Next, we can use the proportion to estimate the number of students who would prefer rock music in a sample of 20.

To do this, we multiply the proportion by the sample size:

Expected number of students who prefer rock music in a sample of 20

= 0.21 x 20 = 4.2

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Answer:1/48

Step-by-step explanation: multiply the fraction by 1/2

The null hypothesis will be same as the claim value which is 75%.

What is null hypothesis?

The null hypothesis is a statistical claim that no statistical significance can be found in a set of given observations. To determine the validity of a theory, hypothesis testing is carried out using sample data. Its symbol is H₀, and it is occasionally referred to as simply "the null".

We are given that the claim is that the proportion is less than 75%.

So, the statement of the null hypothesis states that the population value is the same as the claim value.

So,

H₀ : p = 75% = 0.75

If this null hypothesis is correct, then 75% of all students at the researcher's school finished their homework assignments last night.

Hence, this will mean that the null hypothesis is true.

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Question: No homework? Refer to Exercise 1. The math teachers inspect the homework assignments from a random sample of 50 students at the school. Only 68% of the students completed their math homework. A significance test yields a P-value of 0.1265.

Explain what it would mean for the null hypothesis to be true in this setting.

Answer: 64

Step-by-step explanation: 4160/65                                                                     64

Answer:

100

Step-by-step explanation:

He is walking and he go 12 kilometer total 312 so 312 divided by 12

The chords in the circle L are illustrations of intersecting chords

The lengths that are even numbers are FJ and GJ

The length AD is given as:

AD = 10

From the circle, we have:

AD = AH + HK + KD

Where:

AH = 3 and KD = 2

So, we have:

10 = 3 + HK + 2

Solve for HK

HK = 5 ---- odd length

Next, we calculate length FH using the following intersecting chord theorem

FH * HB = AH * HD

This gives

(FJ + 3) * 3 = 3 * (2 + 5)

Divide by 3

FJ + 3 = 7

Subtract both sides by 3

FJ = 4 --- even length

Next, we calculate length KE using the following intersecting chord theorem

KE * KC = KD * KA

This gives

KE * 3.2 = 2 * (5 + 3)

Evaluate the product

KE * 3.2 = 16

Divide by 3.2

KE = 5 --- odd length

Next, we calculate length GJ using the following intersecting chord theorem

GJ * JE = FJ * JB

This gives

GJ * 4.5 = 4 * (6 + 3)

Evaluate the product

GJ * 4.5 = 36

Divide by 4.5

GJ = 8 --- even length

Hence, the lengths that are even numbers are FJ and GJ

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Answer:

The expression x⁴ + 8x³ + 34x² + 72x + 81 cannot be factored further using simple integer coefficients. It does not have any rational roots or easy factorizations. Therefore, it remains as an irreducible polynomial.

Answer:

F=77

Step-by-step explanation:

\(9\cdot\frac{5}{9}(F-32)=25\cdot9\\5(F-32)=225\\5F-160=225\\5F=385\\F=77\)

Hope this helps plz hit the crown :D

Answer:

$4

Step-by-step explanation:

27 - 3 = 24

24 ÷ 6 = 4

have a goodnight! :)

Answer:

a) Answer: $4 or less

b) Inequality: 6x + 3 ≤ 27

Step-by-step explanation: took the quiz and got it right!

Answer:

7/24.

Step-by-step explanation:

112/384

= 56/192

= 28/96

= 7/24

Given:

Two consecutive odd numbers are doubled resulting with a sum of 160.

To find:

The two odd numbers.

Solution:

Let the two consecutive odd numbers are x and x+2.

Double of the two consecutive odd numbers are 2x and 2(x+2).

Two consecutive odd numbers are doubled resulting with a sum of 160, so

\(2x+2(x+2)=160\)

\(2x+2x+4=160\)

\(4x=160-4\)

\(4x=156\)

Divide both sides by 4.

\(x=\dfrac{156}{4}\)

\(x=39\)

Now,

First odd number = 39

Second odd number = 39+2=41

Therefore, the two consecutive odd numbers are 39 and 41.

The point on the graph that shows the price of 2 ounces of medicine, given the formula, is 4 currency units.

The graph shows the relationship between the ounces of medicine and the price of those ounces in the formula y = 2 x. The value of x in this instance, is the number of ounces of medicine to be sold.

The value of y would be the price of those two ounces to be sold. The formula, y = 2 x means that the price of a single ounce of medicine, is 2 currency units.

For 2 ounces therefore, the price is:

y = 2 x

y = 2 x 2

y = $ 4

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Conduct additional surveys to increase the total number of responses.

Remove duplicates from the dataset to eliminate skewing of results

Use caution when interpreting the results and consider them exploratory rather than conclusive

Consider using a different methodology for gathering data, such as focus groups or interviews

Adjust the confidence level for the survey results to account for the smaller sample size

Use a different data analysis technique, such as bootstrapping, to account for the limitations of the dataset

Consider using a sample survey method, like stratified sampling or cluster sampling.

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the correct way to report the results of a hypothesis test and a measure of effect size using a t-statistic is option A: t(19)=2.30, r2=0.42, p<0.05.

The correct way to report the results of a hypothesis test and a measure of effect size using a t-statistic depends on the specific journal or style guide you are using. However, in general, the most common format is to report the t-value, degrees of freedom, and p-value first, followed by the measure of effect size.

So, looking at the options provided, we can eliminate option D because it only reports the t-value, degrees of freedom, p-value, and effect size all at once without separating them. Now, we are left with options A and B. Both options report the t-value, degrees of freedom, and p-value first, followed by the effect size. However, there is a difference in the order of the p-value and effect size. Option A reports the effect size as r2=0.42 after the p-value, while option B reports the effect size as r2=0.42 before the p-value.

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Answer:

The perimeter of the spiral notebook is 14 inches

Step-by-step explanation:

The given parameters are;

The area of the rectangular binder cover, Aₓ = 80 in²

The area of the rectangular binder cover = 8 × The area of the spiral notebook, Aₙ

The length, l of the spiral notebook = 5 inches

Let w represent the width of the spiral notebook cover;

We have;

Aₙ = l × w = 5 × w

Aₓ = 80 = 8 × Aₙ

8 × Aₙ = 80

∴ 8 × 5 × w = 80

w = 80/(8 × 5) = 80/40 = 2

w - 2 inches

The perimeter, P, of a rectangle = 2 × length, l + 2 × width, w

∴ For the spiral notebook, we have, \(P_{Spiral \ notebook}\)  = 2 × 5 + 2 × 2 = 14

The perimeter of the spiral notebook, \(P_{Spiral \ notebook}\) = 14 inches.

Solution

1) The volume of a cone.

The volume of a cylinder = 36

What is the relationship between the volume of the cone and the volume of the cylinder? (Answer: The cone takes up one-third of the volume of the cylinder.)

2) Volume of a sphere

The relation between the volume of sphere and the volume of cylinder is that the volume of the sphere is two-third of the volume of the cylinder with a height equal to the diameter of the sphere and the same radius.

Final answer

Answer:

A.

Step-by-step explanation:

Just put the equation 3x+4y≥20 into y=mx+b form. Subtract 3x from both sides so you get 4y ≥ -3x+20

then divide everything by 4 to isolate the y.

You would get y ≥ -3/4+ 5. Then just use the slope and y-intercept to graph.

If ≥ symbol is used, shade above the line.

What the first person said

An equation for Windy Kite's total cost, y, in terms of the number of kites purchased, x, is y = 2x + 20.

An equation for Kites-R-Fun's total cost, y, in terms of the number of kites purchased, x, is y = 4x + 8.

Based on the table, if the Alaskan customer wants to buy 4 kites, Kites-R-Fun charges the least.

If the Alaskan customer wants to buy 10 kites, Windy kites charges the least.

The solution to the system of equations is (6, 32).

In order to write a linear equation to describe this situation, we would a assign variable to the number of kites purchased and the total cost respectively, and then translate the word problem into a linear equation as follows:

Since Windy kite charges $2 per kite and a flat rate of $20 for shipping, a linear equation that models the total cost is given by:

y = 2x + 20

When x = 4, the total cost for Windy kites is given by:

y = 2(4) + 20

y = $28.

When x = 7, the total cost for Windy kites is given by:

y = 2(7) + 20

y = $34.

When x = 10, the total cost for Windy kites is given by:

y = 2(10) + 20

y = $40.

For Kites-R-Fun, a linear equation that models the total cost is given by:

y = 4x + 8

When x = 4, the total cost for Kites-R-Fun is given by:

y = 4(4) + 8

y = $24.

When x = 7, the total cost for Kites-R-Fun is given by:

y = 4(7) + 8

y = $36.

When x = 10, the total cost for Kites-R-Fun is given by:

y = 4(10) + 8

y = $48.

In this scenario, we would use an online graphing calculator to plot the system of linear equations as shown in the graph attached below.

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The observed frequency of the cell is fewer than the expected frequency, according to a typical rule of thumb for interpreting the standardized residual: If the residual is less than -2. If the observed frequency is more than the expected frequency, it is greater than 2.

The meaning of a negative residual?

A negative residual indicates an excessively high anticipated value, and a positive residual indicates an excessively low expected value. A regression line's goal is to reduce the total amount of residuals.

A good residual value is what?

Check out the Car Lease Ratings section of our Lease Kit for a complete list of high-residual vehicle brands and models.

                A car is probably not a good lease deal if the lease-end residual value is less than 50% of the MSRP (for a 36-month lease). 55% to 65% of MSRP would be a nice residual.

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Answer:

1597

Step-by-step explanation: