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
Leni [432]
3 years ago
8

A new type of pump can drain a certain pool in 3 hours. An older pump can drain the pool in 9 hours. How long will it take both

pumps working together to drain
the pool?
Mathematics
2 answers:
stepladder [879]3 years ago
7 0
Together the pool can be drained in 2 hours and 18 minutes.
Or if im correct 4.5 hours
ale4655 [162]3 years ago
6 0

Answer: Together the pool can be drained in 2 hours and 18 minutes.

You might be interested in
A local company manufactures netbook computers. Their profit function is given by this equation: y equal minus x to the power of
r-ruslan [8.4K]
The equation described above can also be written as,
                    y = -x² + 100x + 4000
To get the number of notebooks that will give them the maximum profit, we derive the equation and equate to zero.
                  dy/dx = -2x + 100 = 0
The value of x from the equation is 50. Then, we substitute 50 to the original equation to get the profit. 
                   y = -(50^2) + 100(50) + 4000 = 6500
Thus, the maximum profit that the company makes is $6,500/day. 

8 0
2 years ago
What is the consecutve whole numbers of <img src="https://tex.z-dn.net/?f=%5Csqrt%7B40" id="TexFormula1" title="\sqrt{40" alt="\
Inessa [10]

Step-by-step explanation:

\sqrt{36}  <   \sqrt{40}  <   \sqrt{49}

So sqrt(40) lies between 6 and 7.

3 0
2 years ago
HURRY FIRST GETS BRAINLLEST The diagram below shows a circular pizza with a diameter of 14 inches. The pizza is in a square box
boyakko [2]

Answer:

pls do mark my answer as the brainliest..........

Step-by-step explanation

portion of square empty =  256 - 153.86 = 102.14cm^2

8 0
2 years ago
The aspect ratio of the television screen is 16:9 and it is 63cm High. What is its width?
fiasKO [112]
The answer would be 75 width
6 0
2 years ago
Explain how proving two triangles congruent can help prove parts of the triangle congruent.
Ierofanga [76]
You can use the CPCTC (Corresponding Parts of Congruent Triangles are Congruent) property. This means that when two triangles are congruent, all the corresponding parts are congruent to each other.

Have an awesome day! :)
8 0
3 years ago
Read 2 more answers
Other questions:
  • Find the domain of the following function.<br> <img src="https://tex.z-dn.net/?f=f%28x%29%20%3D%20%20%5Csqrt%5B7%5D%7Bx%20-%209%
    5·1 answer
  • 1) 52 + 33=|<br> 2)<br> 26 = 42 =<br> 3) 72 - 2015<br> 4)<br> 32 x 22=
    9·1 answer
  • A mutual fund manager must decide how much money to invest in Atlantic Oil (A) and how much to invest in Pacific Oil (P). At lea
    6·1 answer
  • Try This!!!!!!!!!!!!!!!!!!!!!!
    6·1 answer
  • Find the slope of a line parallel to each given line y = 4/5x + 1
    15·2 answers
  • Please help me I will give you the brain thing and extra points. 5/5 :D
    13·2 answers
  • If someone could help me with this problem ^^ it would be greatly appreciated
    13·1 answer
  • Please what's -9/13 + -6/13
    12·1 answer
  • Find: 12-(-5)= <br> i want the answar plssss
    12·2 answers
  • HURRY WILL MARK BRAINLIEST what is the value of the output when the input is 20
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!