It takes 7 hours for 12 men to paint a room.
How many men would be needed to paint the room in 3 hours?

Answers

Answer 1

Answer:

28(brainlestplzzzzzzzzzzzzzzz)

Step-by-step explanation:

Answer 2

Answer:

28 men will be needed for three hours.

Step-by-step explanation:

7 hours --- 12 men

1 hour --- (12 * 7) 84 hours

3 hours --- (84/3) = 28 hours

Thenks and mark me brainliest :)))


Related Questions

Find the volume of the rectangular prism.

Answers

Answer:

67.5 cm^3

Step-by-step explanation:

To find a rectangular prism volume, you just multiply height, width, and length. So you would multiply 2.5 * 4.5* 6 = 67.5 cm^3.

The members of a consulting firm rent cars from three rental agencies. It is estimated that 0.42 percent of cars come from agency 1, 0.08 percent of cars come from agency 2, and 0.5 percent of cars come from agency 3. It is also estimated that 0.08 percent of cars from agency 1 need a tune-up, 0.02 percent of cars from agency 2 need a tune-up, and 0.02 percent of cars from agency 3 need a tune-up. Answer the following questions, rounding your answers to two decimal places where appropriate.

Answers

The probability that a rental car delivered to the firm will need a tune-up is 0.05% and the conditional probability is 0.04%

How to determine the probabilities

The probability that a rental car delivered to the firm will need a tune-up

From the question, we have the following parameters that can be used in our computation:

Agency 1 = 0.42%,   Tune up from agency 1 = 0.08%

Agency 2 = 0.08%,   Tune up from agency 2 = 0.02%

Agency 3 = 0.5%,    Tune up from agency 3 = 0.02%

Using total probability, we have the following equation

P(tune-up) = P(tune-up | agency 1) * P(agency 1) + P(tune-up | agency 2) * P(agency 2) + P(tune-up | agency 3) * P(agency 3)

Substitute the known values in the above equation, so, we have the following representation

P(tune-up) = 0.08% * 0.42% + 0.02% * 0.08% + 0.02% * 0.5%

Evaluate the sum of products

P(tune-up) = 0.000452

Express as percentage and approximate

P(tune-up) = 0.05%

(b) The probability that it came from agency 2

This is a conditional probability, and it calculated as

P(Agency 2| Tune up) = P(Tune up and Agency 2)/P(Tune up)

Substitute the known values in the above equation, so, we have the following representation

P(Agency 2| Tune up) = (0.02% * 0.08%)/0.0452%

Evaluate

P(Agency 2| Tune up) = 0.0003539823

Express as percentage

P(Agency 2| Tune up) = 0.03539823%

Approximate

P(Agency 2| Tune up) = 0.04%

So, the probability is 0.04%

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Complete question

The members of a consulting firm rent cars from three rental agencies. It is estimated that 0.42 percent of cars come from agency 1, 0.08 percent of cars come from agency 2, and 0.5 percent of cars come from agency 3. It is also estimated that 0.08 percent of cars from agency 1 need a tune-up, 0.02 percent of cars from agency 2 need a tune-up, and 0.02 percent of cars from agency 3 need a tune-up. Answer the following questions, rounding your answers to two decimal places where appropriate.

(a) What is the probability that a rental car delivered to the firm will need a tune-up?

(b) If a rental car delivered to the firm needs a tune-up, what is the probability that it came from agency 2?

4. Find the range of the data set: 3, 21, 17, 17, 34, 22, 26

Please help​

Answers

Answer:

31

Step-by-step explanation:

The Range is the difference between the lowest and highest values (3, 34)

Answer:

31

Step-by-step explanation:

To find the range of the data set, simply subtract the smallest number from the biggest number.

34 - 3 = 31

Therefore, the range of the data set is 31.

Which TWO scenarios can be represented by a ratio of 4 : 5?
I NEED AN ANSWER ASAP PLEASE

Answers

The two scenarios that can be represented by a ratio 4:5 are

1. The ratio of fiction books to the non fiction books, if there are 4 fiction books to 5 non fiction books

2. The ratio of marker to crayon , if there are 4 markers and 5 crayons. ( option A and D)

What is ratio?

A ratio is an ordered pair of numbers a and b, written a / b where b does not equal 0. A proportion is an equation in which two ratios are set equal to each other. For example, if there is 1 boy and 3 girls you could write the ratio as: 1 : 3 (for every one boy there are 3 girls) 1 / 4 are boys and 3 / 4 are girls.

For a scenario that will give ratio of 4:5, it means the first entity will be 4 and the second entity will be 5.

Therefore the two statements that obey this in the option are

1. The ratio of fiction books to the non fiction books, if there are 4 fiction books to 5 non fiction books

2. The ratio of marker to crayon , if there are 4 markers and 5 crayons.

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Malcolm is driving 1,273 miles from Wichita to Charleston for a family reunion. He drives 418 miles the first
day and 384 miles the second day. Round each distance to the nearest ten and estimate about how many miles
Malcolm has left to drive.

A.480 miles
B.470 miles
C.500 miles
D.400 miles

Answers

9514 1404 393

Answer:

  B.  470 miles

Step-by-step explanation:

Using numbers rounded to the nearest 10, the remaining distance is ...

  1270 -420 -380 = 470 . . . . miles

Donna wants to draw a right triangle. She wants the hypotenuse to be 1.5 inches long and one of the legs to be 1.2 inches long. Enter the length that she must use for the second leg to form a right triangle.

Answers

Answer:

0.9 inches

Step-by-step explanation:

The sides of right triangles follow the Pythagorean Theorem:

a² + b² = c²

"a" and "b" are the two shorter sides and "c" is the hypotenuse, the longest side.

Let's plug in what we know.

a² + b² = c²

(1.2)² + b² = (1.5)²

Let's solve the exponents.

1.44 + b² = 2.25

Subtract 1.44 from both sides.

b² = 0.81

Take the square root of both sides.

√b² = √0.81

b = 0.9

The second side will be 0.9 inches.

pls help me ☺️!!!!!!!​

Answers

answer:
4 units^2

step-by-step explanation:
a = 1/2bh
a = 1/2(2)(4)
a = 1(4)
a = 4

find the distance round to the nearest tenth

Answers

Answer:

65 units

Step-by-step explanation:

PLEASE HELP! 2 Images below! Have a great day!

Answers

Answer:

b

Step-by-step explanation:

so 0.5x is a slope of 1/2, which is rise 1 | run 2, and b matches that!

50 POINTS !!


PLEASE HELP !! ILL GIVE BRAINLIEST TO THE RIGHT ANSWERS.

Answers

Answer:

4.5

Step-by-step explanation:

Answer:

[tex]\sqrt{20}[/tex], calculate this further on calculator if necessary

Step-by-step explanation:

The Pythagorean Theorem states that [tex]a^2 +b^2=c^2[/tex]

Plugged in, we get [tex]2^2+4^2=c^2[/tex]

4 + 16 = c^2

20 = c^2

c = [tex]\sqrt{20}[/tex]

please help me plsssssssssssssss

Answers

Answer:

this should help you out

When dividing a polynomial by a binomial, what does the remainder tell you?

Answers

Answer:

the remainder is not just added to the quotient. it becomes the numerator of a fraction that is added to the quotient. the correct answer is x-3- the process works for dividing any polynomial

9. As part of a class project, Areeb collected $126 in donations for a local
hospice. That amount was 7% of the total amount collected by the class.
How much money did the class collect in all?

Answers

Answer:

So you're given that 7% is $126, and you have to find 100%. In order to do this you could set up proportions. 

1) 126/7=x/100

Next you can cross multiply and you'll get:

2) 12600=7x

Now divide each side by 7

3)12600/7=7x/7

And simplify

4)1800=x

Solution: $1800

Step-by-step explanation:


Explain the process to solve the equation. Use proper
vocabulary in your explanation.
1/4x=-5/8

Answers

Answer:

x=-5/2

Step-by-step explanation:

First you need to make 1/4x into x, to do that you multiply 4 on both side.

1/4x*4=-5/8*4

After multiplying 4 on both side you get:

x=-5/2

answer:
x = -2 1/2

step-by-step explanation:
1/4x = -5/8
first divide 1/4 over the equal sign to get rid of x
1/4x = -5/8
/1/4 /1/4
then multiply by the reciprocal by flipping the numerator and denominator on the second fraction
-5/8 • 4/1
multiply
-20/8
simplify
x = -2 1/2

Factorize:3a-6b+ax-2bx.

Answers

Answer:

(3 + x) ( a -2b)

Step-by-step explanation:

3a - 6b + ax - 2bx

3a + ax - 6b - 2bx

a(3 + x) - 2b (3 +x)

(3 + x) (a - 2b)

Answer:

(a-2b) (3+x)

Step-by-step explanation:

(3a-6b)+(ax-2bx)

(3a+ax)-(6b-2bx)

a(3+x)-2b(3+x)

(a-2b) (3+x)

Thanks

Hope it helps

Suppose you are interested in using regression analysis to estimate an NBA player's salary using the following independent variables: the player was traded in the last 5 years, average points per game, the team had greater than 45 wins in the previous season, the team made the playoffs in the previous season, career number of games started, and the player's nationality. Which of the following independent variables are indicator (dummy) variables?
a. the player was traded in the last 5 years
b. years played in the NBA
c. the players nationality
d. the player has won an NBA championship
e. player's age
f. the player is on the All-Star team
g. one of these

Answers

Answer:

a. the player was traded in the last 5 years

For the NBA player's salary, the indicator (dummy) variables are:

The player was traded ... 5 years.The player ... NBA championship.The player ... All-Star team.

What are indicator (dummy) variables?

These are variables that have one of two answers such as yes and no or positive and negative. They are represented as 0 or 1 for the most part.

A player being traded in the last 5 years can either be a yes or no response just like if a player has won an NBA championship or if they are on an All-Star team.

In conclusion, options A, B, and F are correct.

Find out more on indicator variables at https://brainly.com/question/4528945.

Which of the following sets of numbers could not represent the three sides of a triangles?



9,23,34
10,24,31
8,14,21
5,14,16


Answers

Answer:

pretty sure it's B. Let me know if im wrong

Step-by-step explanation:

The formula to find the area of a triangle is  A=12bhA=12bh . What is the area of a triangle that has a base of 5 and a height of 4? ​

Answers

answer: 240 square (whatever measurement it is)

step-by-step explanation:
A=12bh it’s great you knew that
so just add in the numbers
A=12(5)(4) or 12 • 5 • 4
A=240

Let p be the statement "He is tall" and let q be the statement the following statements in symbolic form using p and q. He is handsome". Write each of /1/ He is tall and handsome. /2/ He is tall but not handsome. /3/ He is false that he is short or handsome. /4/ He is neither tall nor handsome. /5/ He is tall, or he is short and handsome /6/ It is not true that he is short or not handsome

Answers

On solving the provided question we can say that by logarithm the statement is true he is short.

what is logarithm?

The logarithm is a power's reciprocal in mathematics. Accordingly, the exponent by which b must be raised to obtain a number x equals the logarithm of that number in base b. For instance, since 1000 = 103, its base-10 logarithm is 3, or log10 = 3. As an illustration, the base 10 logarithm of 10 is 2, while the square of 10 is 100. Log 100 = 2. To answer a question like, For example, how many times must a base of 10 be multiplied by itself to achieve 1,000, a logarithm (or log) is the mathematical term utilized. The solution is 3 (1,000 = 10 10 10).

He is tall, or he is short and handsome

It is not true that he is short or not handsome

by logarithm,

the statement is true he is short.

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Put these fractions into ascending order (smallest to largest): 8/15 2/15 9/15 6/15 12/15

Answers

Answer:

2/15 6/15 8/15 9/15 12/15

Step-by-step explanation:

Answer: 2/15, 6/15, 8/15, 9/15, 12/15.

Step-by-step explanation:

Just treat the denominators like they are not there for now, and treat the numerators like they are whole numbers and then rearrange:

8, 2, 9, 6, 12

Now rearrange from smallest to largest:

2, 6, 8, 9, 12

Now just put the denominators back in under the arranged numbers:

2/15, 6/15, 8/15, 9/15, 12/15

Words and their definitions:

Numerator: Top part of the fraction

Denominator: Bottom part of the fraction

Discussion Topic
How did the United States' entry into World War I change the culture and
international political policies of the country?

Answers

WORLD WAR I

The United States' entry into World War I led to a rise in nationalism and patriotism, as well as a shift towards a more interventionist foreign policy. This had a lasting impact on the culture and international political policies of the country.

Explanation:

The United States' entry into World War I marked a significant shift in the culture of the country. Prior to the war, the United States had maintained a policy of isolationism, with a focus on avoiding involvement in foreign conflicts. However, the country's entry into the war marked a shift towards a more interventionist foreign policy, as the United States began to take a more active role in international affairs.

HOPE IT HELPS!

A pre-paid cell phone company charges $10.35 as a monthly access fee and $0.08 per minute of calling time.

Express the monthly cost C in terms of minutes of call time ?

What will the monthly cost be if you make 280 minutes of calls this month?

Answers

Answer: $32.75

Step-by-step explanation:

If each call costs $0.08 and you make 280 minutes worth of calls this month you'll have made $22.04 worth of phone calls plus the monthly access fee ($10.35) if you add both those fees you'll be left with a bill of $32.75.

I hope this answer helped you. :)

Answer:

$32.75

Step-by-step explanation:

10.35 + (0.08×280)

The question is in the photo attached

Answers

Answer: 10,000

Step-by-step explanation: here's how I got my answer:

Since we are finding the decrease from 2005-2015, we need to multiply 1/20 by 10, since the timespan is 10 years worth of decreasing.

So, 1/2 * 10 =1/2

So, since we have 1/2 as the overall decrease in the population within the 10 years, we divide 20,000 by 1/2 or 20,000 by 2, and we get 10,000. I hope this helps.

Researchers at the National Cancer Institute released the results of a study that investigated the effect of weed-killing herbicides on house pets. The randomly sampled 400 dogs from homes where an herbicide was used on a regular basis, diagnosing lymphoma in 230 of them. Of 200 dogs randomly sampled from homes where no herbicides were used, only 25 were found to have lymphoma. For this problem, let p1 be the population proportion of dogs that get lymphoma from homes where herbicides are used and p2 be the population proportion of dogs that get lymphoma from homes where herbicides are not used. Researchers are interested in learning about the difference in the proportion of cancer diagnoses between the two groups. What is the 95% confidence interval for the difference in the proportion of cancer diagnoses between the two groups

Answers

Answer:

The 95% confidence interval for the difference in the proportion of cancer diagnoses between the two groups is (0.3834, 0.5166).

Step-by-step explanation:

Before building the confidence interval, we need to understand the central limit theorem and subtraction between normal variables.

Central Limit Theorem

The Central Limit Theorem estabilishes that, for a normally distributed random variable X, with mean [tex]\mu[/tex] and standard deviation [tex]\sigma[/tex], the sampling distribution of the sample means with size n can be approximated to a normal distribution with mean [tex]\mu[/tex] and standard deviation [tex]s = \frac{\sigma}{\sqrt{n}}[/tex].

For a skewed variable, the Central Limit Theorem can also be applied, as long as n is at least 30.

For a proportion p in a sample of size n, the sampling distribution of the sample proportion will be approximately normal with mean [tex]\mu = p[/tex] and standard deviation [tex]s = \sqrt{\frac{p(1-p)}{n}}[/tex]

Subtraction between normal variables:

When two normal variables are subtracted, the mean is the difference of the means, while the standard deviation is the square root of the sum of the variances.

The randomly sampled 400 dogs from homes where an herbicide was used on a regular basis, diagnosing lymphoma in 230 of them.

This means that:

[tex]p_h = \frac{230}{400} = 0.575, s_h = \sqrt{\frac{0.575*0.425}{400}} = 0.0247[/tex]

Of 200 dogs randomly sampled from homes where no herbicides were used, only 25 were found to have lymphoma.

This means that:

[tex]p_n = \frac{25}{200} = 0.125, s_n = \sqrt{\frac{0.125*0.875}{200}} = 0.0234[/tex]

Distribution of the difference:

[tex]p = p_h - p_n = 0.575 - 0.125 = 0.45[/tex]

[tex]s = \sqrt{s_h^2+s_n^2} = \sqrt{0.0247^2 + 0.0234^2} = 0.034[/tex]

Confidence interval:

The confidence interval is:

[tex]p \pm zs[/tex]

In which

z is the zscore that has a pvalue of [tex]1 - \frac{\alpha}{2}[/tex].

95% confidence level

So [tex]\alpha = 0.05[/tex], z is the value of Z that has a pvalue of [tex]1 - \frac{0.05}{2} = 0.975[/tex], so [tex]Z = 1.96[/tex].

The lower bound is [tex]0.45 - 1.96(0.034) = 0.3834[/tex]

The upper bound is [tex]0.45 + 1.96(0.034) = 0.5166[/tex]

The 95% confidence interval for the difference in the proportion of cancer diagnoses between the two groups is (0.3834, 0.5166).

the graph of a function f is the collection of ____________ or (x,f(x)) such that x is in the domain of f

Answers

Answer: ordered pairs

What is the domain of the function below?
A) x < 2
B) x ≤ 3
C) x ≥ 2
D) All Real Numbers

Answers

Answer:

I would say (option A)

Step-by-step explanation:

Domain is the set of x-values that can be inputted into function f(x).

We see that our x-values can be any number. Therefore, we have all real numbers as our domain:

→ A) x < 2.

Hope this helps!

The price of an item has risen to $387 today. Yesterday it was $180. Find the percentage increase

Answers

Answer:

115%

Step-by-step explanation:

Given that,

The initial price of an item = $180

The final price of an item = $387

We need to find the percentage increase. It can be calculated as follows :

[tex]\%=\dfrac{\text{Change in price}}{\text{initial price}}\times 100[/tex]

Put all the values,

[tex]\%=\dfrac{387-180}{180}\times 100\\\\=115\%[/tex]

So, the required percentage increase is 115%.

Jen has some buttons. She gets
23 more buttons from her mom.
Now she has 65 buttons.
How many buttons did
Jen have to begin with?

Answers

Answer:

x + 23 = 65

x = 42

She had 42 buttons to begin with.

In a survey on favorite parts of college, students were asked to choose their favorite professor (from a list of four popular professors), favorite meal in the dining hall (from a list of five popular meals), and favorite weekend activity (from a list of six popular activities). Calculate the number of different ways the survey can be filled out if students select one from each category.

Answers

Answer:

The survey can be filled out in 120 different ways.

Step-by-step explanation:

The possible options are:

One professor from a set of four.

One meal from a set of five.

One weekend activity from a set of six.

Calculate the number of different ways the survey can be filled out if students select one from each category.

The multiplication of the number of possible outcomes for each trial. So

4*5*6 = 20*6 = 120

The survey can be filled out in 120 different ways.

Pls help; tysmmmmmmn <3

Answers

8 is the answer, yw have a nice day:)

Answer:

64

Step-by-step explanation:

ˣ= 8

Since x² it means you have to multiply

8 two times

8 x 8= 64

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is the following table Proportional or Non proportional?HELP PLS:( The objects in this photo belong to which major sphere of the Earth system? Sea Green Enterprises reports the following assets and liabilities on its balance sheet. Net Book Value Fair Market Value Assets $600,000 $925,000 Liabilities 200,000 200,000 Sea Green just lost a product liability suit with damages of $10,000,000 being awarded to the plaintiff. Although Sea Green will appeal the judgment, legal counsel indicates the judgment is highly unlikely to be overturned by the appellate court. The product liability insurance carried by Sea Green includes a payout ceiling of $6,000,000. Assume any net assets of the company will be used to reduce the judgment. For how much of the judgment is the entity and its owners liable if Sea Green is a sole proprietorship, a partnership, an LLC, a C corporation, and an S corporation Your friend Luna feels overwhelmed while trying to critique a piece of art. She confides in you that she has a great description of the piece, a quality analysis, and a solid interpretation, but she has no idea how to finish with an evaluation of the piece. What question could help Luna evaluate the artwork?A. What is the theme or subject of the artwork?B. What are your thoughts and feelings about the artwork?C. What elements of art or design principles are used in the artwork?D. What do you think the artist is trying to say with the artwork? What type of rock commonly often contains gas bubbles and the mineral(s) hornblende, muscovite, olivine, lucite, and/or plagioclase? What makes the concept valor without renown nobler than the traditional goals of feudal heroism what did you do with the dress you __ from me? What the function?y = 2.5x + 8 Solve = 3/5k + 7/10 = 11/15k 2/5 Which privacy act safeguards information contained in private personnel records and mandates information safekeeping An inventory count shows that teaching supplies costing $3,464 are available at year-end 2017 write as the opposite of a square root: -2 times square root of 3 What is the density of a 1209 kg object that is 1.94 m3 in size? T __________________ a montar en monopatn maana AB=25 , BD=4, Solve for the radius?Please help!!!!! Which of the following is NOT true about DNA? it has the instructions to make proteins only human cells have DNA it is found in the nucleus of eukaryotes a gene is a segment of DNA on a chromosome A movie theater sells popcorn in bags that open to form similar prisms, as shown. The large bag has a volume of 576 cubic inches. The small bag is 12 in tall and the large bag is 16 in tall. What is the volume of the small bag? How many points did you get for answering? Decades ago, physicians could apply whatever treatment they felt was necessary to patients, many times without the patients permission or even knowledge of what was taking place. Most physicians did the very best for their patients, but some used this power to experiment with new ideas or procedures.Now we have the Patients Bill of Rights. QUESTION: Explain how the Patients Bill of Rights helps prevent unethical behavior among medical professionals today. Then give your opinion: Should a person always listen to the recommendation of their doctor in every situation? Give reasons for your answer. Given: (AB) (CD)If the coordinates of point A are (8 , 0) and the coordinates of point B are (3 , 7), the y-intercept of (AB) is (?) . If the coordinates of point D are (5 , 5), the equation of line (CD) is y =(?) x +(?). can someone please help me figure out what the (?) is.