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
kakasveta [241]
3 years ago
9

A large drain and a small drain are opened to drain a pool. The large drain can empty the pool in 2 h. After both drains have be

en open for 1 h, the large drain becomes clogged and is closed. The small drain remains open and requires 10 more hours to empty the pool. How long would it have taken the small drain, working alone, to empty the pool?
Mathematics
2 answers:
erma4kov [3.2K]3 years ago
6 0

Answer:

22

Step-by-step explanation:

i did that before

Over [174]3 years ago
5 0

Answer:

22

Step-by-step explanation:

Let X be the time for only a small drain, the work completed would be unity.

 The small drain has been open for a total of 11 hours, one hour next to the large one, and 10 hours alone.

We have that large drainage can accomplish this in 2 hours.

We have the following system:

1/2 + 11 / x = 1

solving, we have:

11 / x = 1 - 1/2

11 / x = 1/2

x = 11 * 2

x = 22

I mean it would take a total of 22 hours for the small drain alone

You might be interested in
Find an expression for the perimeter of rectangle ABCD. Use the formula P= 2l + 2w.
natita [175]

Answer:

(b)

P = [4(4a + 3b]/(2a + b)

Step-by-step explanation:

P = 2L + 2W

P = [2(5a + 4b) + 2(3a + 2b)]/(2a + b)

P = [10a + 8b + 6a + 4b]/(2a + b)

P = [16a + 12b]/(2a + b)

P = [4(4a + 3b]/(2a + b)

3 0
3 years ago
At the beginning of the month, Lily has $4,578. By the end of the month, she only has $947 left over. How much money did she spe
alisha [4.7K]
3631 because 4578 - 947 = 3631
5 0
3 years ago
Read 2 more answers
Today there are a total of six toll-free area codes: 800, 844, 855, 866, 877, and 888. Assume that all seven digits for the rest
Ludmilka [50]

Answer:

6 \times 10^{7}

Step-by-step explanation:

Total number of toll-free area codes = 6

A complete number will be of the form:

800-abc-defg

Where abcdefg can be any 7 numbers from 0 to 9. This holds true for all the 6 area codes.

Finding the possible toll free numbers for one area code and multiplying that by 6 will give use the total number of toll free numbers for all 6 area codes.

Considering: 800-abc-defg

The first number "a" can take any digit from 0 to 9. So there are 10 possibilities for this place. Similarly, the second number can take any digit from 0 to 9, so there are 10 possibilities for this place as well and same goes for all the 7 numbers.

Since, there are 10 possibilities for each of the 7 places, according to the fundamental principle of counting, the total possible toll free numbers for one area code would be:

Possible toll free numbers for 1 area code = 10 x 10 x 10 x 10 x 10 x 10 x 10 = 10^{7}

Since, there are 6 toll-free are codes in total, the total number of toll-free numbers for all 6 area codes = 6 \times 10^{7}

4 0
3 years ago
Solve 4(x-3 )+x =2x+9 and justify your solution
klio [65]
X=7
after you remove parentheses you do those steps

6 0
2 years ago
Read 2 more answers
What is the difference between 5 and 2 1/5
Vsevolod [243]

The difference between 5 and 2 1/5

5 - 2 1/5

borrow from the 5

4 5/5 - 2 1/5

2 4/5

Answer: 2 4/5

3 0
3 years ago
Read 2 more answers
Other questions:
  • 12. Erma has her eye on two sweaters at her favorite clothing store, but she has been waiting
    15·1 answer
  • Find the slope of (-10,-4) and (5,5)
    14·2 answers
  • Can someone help will all the problems I will mark you the brainest!
    8·1 answer
  • Number system study guide
    12·2 answers
  • Math help! 20 points and brainiest answer
    6·2 answers
  • Math is my problem help me
    10·1 answer
  • Anyone know how to do this
    13·1 answer
  • Y'all can you answer these? 8th grade algebra 1-10 Q's??
    8·2 answers
  • Use a geometric model to factor x2 - 9 by following these steps:
    15·1 answer
  • Given that cos(theta) = -2 radical 5/5, and is in Quadrant II, what is cos(2theta)?
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!