1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Novosadov [1.4K]
3 years ago
12

a contractor crew can frame 3 houses in a week how long will it take them to frame 54 houses if they frame the same number each

week
Mathematics
1 answer:
kolbaska11 [484]3 years ago
3 0
To set up an equation for this you can use a variable to represent your unknown (in this case the unknown is how long it will take to frame 54 houses)

We know that 3 houses can be framed in 1 week so you can represent the equation as 

3x=54 (3 being the amount of houses framed in 1 week, x being how many weeks it will take to frame 54 houses)

You can isolate X by dividing both sides by 3 (3x/3 = 54/3) which simplifies to 
x = 54/3 
You might be interested in
How many times heavier is a 8 1/4 pound fish than a 6 7/8 pound fish
icang [17]

Answer:

Step-by-step explanation:

Divide 8 1/4 by 6 7/8 and the answer will be 1.2 times heavier.

8 1/4 is 8.25 and 6 7/8 is 6.875 in decimal point and again:

8.25 divided by 6.875 is 1.2.

8 0
1 year ago
Which addition sentences show you how to find 16-9?
Valentin [98]
This dosent make sense and where are the sentences ;-;
5 0
3 years ago
A recent study asked U. S. Adults to name 10 historic events that occurred during their lifetime that have had the greatest impa
Nadusha1986 [10]

Using the z-distribution, as we are working with a proportion, it is found that the 99% confidence interval for the proportion of all U. S. Adults who would include the 9/11 attacks on their list of 10 historic events is (0.7458, 0.7942). It means that we are 99% sure that the true proportion for all U.S. adults is between these two bounds.

<h3>What is a confidence interval of proportions?</h3>

A confidence interval of proportions is given by:

\pi \pm z\sqrt{\frac{\pi(1-\pi)}{n}}

In which:

  • \pi is the sample proportion.
  • z is the critical value.
  • n is the sample size.

In this problem, the parameters are:

z = 2.575, n = 2000, \pi = 0.77

The lower limit of this interval is:

\pi - z\sqrt{\frac{\pi(1-\pi)}{n}} = 0.77 - 2.575\sqrt{\frac{0.77(0.23)}{2000}} = 0.7458

The upper limit of this interval is:

\pi + z\sqrt{\frac{\pi(1-\pi)}{n}} = 0.77 + 2.575\sqrt{\frac{0.77(0.23)}{2000}} = 0.7942

The 99% confidence interval for the proportion of all U. S. Adults who would include the 9/11 attacks on their list of 10 historic events is (0.7458, 0.7942). It means that we are 99% sure that the true proportion for all U.S. adults is between these two bounds.

More can be learned about the z-distribution at brainly.com/question/25890103

7 0
2 years ago
Star Cellular has several phone plans to choose from. The $39 monthly service plan allows 500 anytime minutes and charges 40 cen
dlinn [17]
A) $59.00

50 x .40 + 29 = 59
4 0
2 years ago
The glasses that Pierre wants to buy cost $230. If he waits for them to go on sale next week, he can get a 15% discount. How muc
otez555 [7]

Answer:

$34.50 saved

Step-by-step explanation:

230 - 15% = $195.5

230 - 195.5 = 34.5 saved

4 0
3 years ago
Other questions:
  • Find the value of: <img src="https://tex.z-dn.net/?f=%281-%5Cfrac%7B1%7D%7B2%5E2%7D%29%281-%5Cfrac%7B1%7D%7B3%5E2%7D%29...%281-%
    9·2 answers
  • I need help with number 12 please. Thank you.
    8·1 answer
  • Help me with 1 and 2 please
    8·2 answers
  • The circle below is centered at the point (2,-1) and has a radius of length 3. What is iis equation?
    10·2 answers
  • Answer ASAP, will give brainliest!!
    12·1 answer
  • Help please please help
    7·1 answer
  • A recipe for a cassetole calls for 3 4/7 cups of rice.adam has already put in 3 1/4 cups how mqny more cups does he need to put
    6·1 answer
  • The price of a Barry bonds baseball card in 2001 was $50. It is now being sold for $30. Find the percent decrease in the cost of
    7·1 answer
  • QUICK HELP I NEED TO ANSWER THIS QUESTION<br><br><br><br> WHO ASKED???
    7·1 answer
  • Help please, I'll give a brainliest, I just can't seem to figure these out
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!