You began a new job at a pizza shop 3 weeks ago. You worked 6 hours during the first week, 4 hours during the second week, and 10 hours during the third week. Which graph best represents the total hours you worked over these 3 weeks?

Answer:

846

Step-by-step explanation:

2 x 387.5 + 1.25 x 56.8

[ Air craft travel distance + car travel distance ]

= 775 + 71

=846

The total distance is 846miles.

In mathematics, multiplication is a method of finding the product of two or more numbers. It is one of the basic arithmetic operations, that we use in everyday life.

Here, given that,

Kristi travels by plane at an average speed of 387.5 mph for 2 hours and by car at an average speed of 56.8 mph for 1.25 hours.

Total distance =[ Air craft travel distance + car travel distance ]

=2 x 387.5 + 1.25 x 56.8

= 775 + 71

=846

Hence, total distance is 846 miles.

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Answer:

x = 6

11/2x + 2/3x = 37

37/6x = 37

Step-by-step explanation:

these are correct since when you evaluate the equation, you only get 6 being the value for x. And all these three options I wrote above lead to x = 6

Hope this helped :)

Answer:

Step-by-step explanation:

5 seconds later acceleration of the car is 6m/h^2

We know that the initial velocity of a car is 50 mph.

In the end, the final velocity of a car is 80 mph.

The time difference is 5 seconds.

For the calculation of the acceleration, we have this formula,

α = δv/t

so here, according to our data, velocity and time are,

u = 50 mph

v = 80 mph

t = 5 s

Finally, the acceleration of the car can be calculated by,

α = (80 - 50) / 5

α = 30 / 5

α = 6 m/h^2

From the above calculations, the car's acceleration is 6 m/h^2.

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24 centimeters. Hope this helped!

Answer:

Step-by-step explanation:

Four defenders on a soccer team represents 20 percent of the players on the team.

If the total number is x, it can found as:

Correct choice with same outcome is D

the perosn abocve me is right

Step-by-step explanation:

1. I based my decision on allocating points to maximize my own score, while also considering the potential benefits of contributing to the group fund.

2. The best outcome for me would be allocating the minimum points required to the GIVE account, while putting the majority in the KEEP account. This would ensure I receive the most points for myself.

3. The best outcome for the group would be if both participants maximized their contributions to the GIVE account. This would create the largest group fund, resulting in the most redistributed points and highest average score.

4. There are parallels with risk management strategies. Individuals may act in their own self-interest, but a larger group benefit could be achieved if more participants contributed to "group" risk management strategies like vaccination, safety protocols, insurance policies, etc. However, some individuals may free ride on others' contributions while benefiting from the overall results. Incentivizing group participation can help align individual and group interests.

Answer:

73°

Step-by-step explanation:

To find ∠QPS, just add ∠1 and∠2

∠QPS = ∠1 + ∠2

          = 44° + 29°

          = 73°

Answer:

∠QPS = 73°

Step-by-step explanation:

∠1 = 44°

∠2 = 29°

∠QPS = ∠1 + ∠2 = 44° + 29° = 73°

Answer:

The answer is 8

Answer:

286

Step-by-step explanation:

C(n,r)=?

C(n,r)=C(13,3)

=13!(3!(13−3)!)

=13!3!×10!

= 286

Answer:

360

Step-by-step explanation:

I honestly don't understand how it was 360, but I tried 240 and it didn't work.

Check the picture below.

now let's take a looksie at the triangles, well segments DE || AC, that only happens if segment DE is the midsegment of the triangle ABC, which also means that both triangles are similar

\(\cfrac{AB}{DB}=\cfrac{BC}{BE}\implies \cfrac{(2x)+(x+5)}{x+5}=\cfrac{4+3}{4}\implies \cfrac{3x+5}{x+5}=\cfrac{7}{4} \\\\\\ 12x+20=7x+35\implies 5x+20=35\implies 5x=15\implies x=\cfrac{15}{5}\implies x=3\)

The probability that in the next six tries the number of free throws he will make is at least 4 is 0.74431 and at most 3 is 0.25569.

1. At least 4 free throws made:

The number of free throws the player will make in the next six tries follows a binomial distribution with parameters n = 6 (number of trials) and p = 0.7 (probability of success in each trial).

To find the probability that the player makes at least 4 free throws in the next six tries, we need to calculate the probabilities of making 4, 5, or 6 free throws, and add them up:

P(X ≥ 4) = P(X = 4) + P(X = 5) + P(X = 6)

where X is the random variable representing the number of free throws made.

Using the binomial probability formula, we can calculate these probabilities:
- Probability of making 4 free throws: (6 choose 4) * 0.7⁴ * 0.3²
- Probability of making 5 free throws: (6 choose 5) * 0.7⁵ * 0.3¹
- Probability of making 6 free throws: (6 choose 6) * 0.7⁶ * 0.3⁰

where "choose" is the binomial coefficient (6 choose 4) = 6!/(4!2!) = 15, and so on.

Getting the sum of these probabilities will give the probability of making at least 4 free throws.

P(X ≥ 4) = 0.324135 + 0.302526 + 0.117649 = 0.74431

2. To find the probability of making at most 3 free throws, we can use the complement rule:

P(X ≤ 3) = 1 - P(X ≥ 4) = 1 - 0.74431 = 0.25569

Therefore, the probability of making at least 4 and at most 3 free throws in the next six tries is:

P(3 ≤ X ≤ 4) = P(X ≤ 3) + P(X ≥ 4) = 0.25569 + 0.74431 = 1.0

This makes sense, since the player must make either at least 4 or at most 3 free throws in the next six tries, so the sum of these probabilities is 1.

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The correct answer is the janitor is mopping at a rate of 1/15 of a classroom per minute and this is a proper fraction.

It is given in the question that a school janitor has moped \(\frac{1}{3}\) of classroom in 5 minutes.

We have to find the rate at which he is moping

We will divide \(\frac{1}{3}\) by 5, to divide by 5 we will multiply \(\frac{1}{3}\) with  reciprocal of 5 that is \(\frac{1}{5}\)

\(\frac{1}{3}\)× \(\frac{1}{5}\) = \(\frac{1}{15}\)

Hence, the janitor is mopping at a rate of 1/15 of a classroom per minute.

This fraction is proper fraction If the numerator of a fraction is less than the denominator, the fraction is said to be a correct fraction.

A proper fraction's value is never more than 1. Sam, for instance, divided a chocolate bar into four equal pieces. He took one portion and handed his sister Rachel three portions.

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Answer:

9 cm

Step-by-step explanation:

Arc length = θ/360 × 2πr

A circle has an arc with a measure of 120 degrees and a lenght of 3π cm. What is the diameter of the circle

Hence,

3π = 120/360 × 2πr

Diameter = 2r

3π = 1/3 × 2πr

Cross Multiply

9π = 2πr

2r = 9π/π

Note that :

Diameter = 2r

Hence,

Diameter = 9 cm

The expected population size be after two generations which has a current size of 150 and λ of 1.2 is 216.

Nt = N₀ × λ^t

Nt = Population size at generation t

N₀ = Current population size

t = Number of generations

λ = Finite rate of increase

λ = 1.2

N₀ = 150

Nt = 150 × 1.2²

Nt = 150 × 1.44

Nt = 216

Population size is defined as the number of individuals present in a designated region. Finite rate of increase is the ratio of population size from increase from one year to the next.

Therefore, the expected population size be after two generations is 216

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The mean number of cars owned for this sample is 3.00.

To find the mean number of cars owned for this sample, we will use the formula for calculating the mean:
Mean = (sum of all values) / (number of values)

Let's assume that the sample is given as: 1, 2, 3, 4, 5
Find the sum of all values. In this case, the sum is 1 + 2 + 3 + 4 + 5 = 15.
Find the number of values. In this case, there are 5 values.

Divide the sum of all values by the number of values to find the mean. In this case, the mean is 15 / 5 = 3.

Overall, Mean, median and mode are all measures of central tendency in statistics. In different ways they each tell us what value in a data set is typical or representative of the data set. The mean is the same as the average value of a data set and is found using a calculation. Add up all of the numbers and divide by the number of numbers in the data set.

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Answer:

The answer will be A

As 75 - 12 should be equal to 9x

Answer:

803.84m^2

Step-by-step explanation:

16^2=256

256×3.14=803.84

orrr for the exact answer 256π=804.24771931898.....

Answer:

x <= 9

Step-by-step explanation:

x -15 <= -6

+15. +15

x <=9

The committee can best catalog the data so it can be used to make meaningful changes by using a database management system (DBMS).

A database management system (DBMS) is a system that enables users to create, read, update, and delete data in a database. The DBMS is a tool that handles all data-related tasks. Organizations employ a DBMS to keep data organized and easy to access and manage.

DBMS provides a set of computerized tools for managing all types of data. A DBMS allows end-users to extract and analyze data from a database.

The committee can use a database management system to ensure that data is organized and easily retrievable. They can employ a DBMS to streamline data entry and report production for high-quality output.

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Answer:reflections I think

Step-by-step explanation: when you reflect a point across an axis, at least one of the coordinates’ sign will change

Answer:

person above me is right

Step-by-step explanation:

The characteristics of the normal distribution can be used to determine the likelihood that X equals 19.62 because X is a normally distributed random variable with a mean of 12 and a standard deviation of 3.

We must compute the z-score, which counts the number of standard deviations a given result is from the mean, in order to determine this probability. Calculating the z-score is as follows:

z = (x - μ) / σ

If the supplied value, x, the mean, and the standard deviation are all given.In this instance, x=19.62, =12, and =3 respectively. By replacing these values, we obtain:

z = (19.62 - 12) / 3 ≈ 2.54

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The answer to your question would be D. 3/1

The minimum score that assures a student an A in the midterm is 87.7.

Given that the average score of a midterm exam in a large class is 69.7 and the standard deviation is 18.0. Suppose that in order to get an A in the midterm, the student's score in the test has to be at least one standard deviation above the mean.

To find the minimum score that assures a student an A in the midterm, we use the following formula: Minimum score = Mean + 1(Standard Deviation). Substituting the given values in the above formula, Minimum score = 69.7 + 1(18.0)Minimum score = 87.7. Therefore, the minimum score that assures a student an A in the midterm is 87.7.

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The problem of unit root in standard regression and time-series models arises when a variable exhibits a non-stationary behavior, meaning it has a trend or follows a random walk. Unit root tests, such as the Dickey-Fuller and augmented Dickey-Fuller tests, are used to detect the presence of a unit root in a time series. These tests examine whether the coefficient on the lagged value of the variable is significantly different from one, indicating the presence of a unit root.

In standard regression analysis, it is typically assumed that the variables are stationary, meaning they have a constant mean and variance over time. However, many economic and financial variables exhibit non-stationary behavior, where their values are not centered around a fixed mean but instead follow a trend or random walk. This presents a problem because standard regression techniques may produce unreliable results when applied to non-stationary variables.

Time-series models, such as autoregressive integrated moving average (ARIMA) models, are specifically designed to handle non-stationary data. They incorporate differencing techniques to transform the data into a stationary form, allowing for reliable estimation and inference. Differencing involves computing the difference between consecutive observations to remove the trend or random walk component.

The Dickey-Fuller test and augmented Dickey-Fuller test are commonly used to detect the presence of a unit root in a time series. These tests examine the coefficient on the lagged value of the variable in a regression framework. The null hypothesis of the tests is that the variable has a unit root, indicating non-stationarity, while the alternative hypothesis is that the variable is stationary.

The Dickey-Fuller test is a simple version of the test that includes only a single lagged difference of the variable in the regression. The augmented Dickey-Fuller test extends this by including multiple lagged differences to account for potential serial correlation in the data. Both tests provide critical values that can be compared to the test statistic to determine whether the null hypothesis of a unit root can be rejected.

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Answer:

9

Step-by-step explanation:

you can set up a proportion for it (i included a picture of it)

Answer:

I am just doing this to confirm the other person is right. It is 9.

Step-by-step explanation:

Answer:

option 6b):) is correct

Answer: 0.4

Step-by-step explanation:

The question is asking for the probability to own a dog.

40% own a dog.

If you add all of the percentages you get 100%

40/100

=0.4

The probability is 0.4 times to randomly select a resident that only owns a dog.

The cost of one computer is £600 and the cost of one printer is £800.

Computing equipment is bought from a supplier. The cost of 5 Computers and 4 Printers is £6,600, and the cost of 4 Computers and 5 Printers is £6,000. Form two simultaneous equations and solve them to find the costs of a Computer and a Printer.

Let the cost of a computer be x and the cost of a printer be y.

Then, the two simultaneous equations are:5x + 4y = 6600 ---------------------- (1)

4x + 5y = 6000 ---------------------- (2)

Solving equations (1) and (2) simultaneously:x = 600y = 800

Therefore, the cost of a computer is £600 and the cost of a printer is £800..

:Therefore, the cost of one computer is £600 and the cost of one printer is £800.

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