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
balandron [24]
3 years ago
7

1 pump fill resovoir in 60 hrs other 80 hrs other 90 hrs when they are together how long to fill resovoir? Rsm

Mathematics
1 answer:
FromTheMoon [43]3 years ago
8 0

Answer:

24.83 hours

Step-by-step explanation:

Given that :

Let time taken by pumps be :

Pump A = 60 hours

Pump B = 80 hours

Pump C = 90 hours

Recall :

Rate = 1 / time taken

The rates of the pumps are :

Pump A rate = 1 / 60

Pump B rate = 1/80

Pump C rate = 1/90

Combined rate : 1/60 + 1/80 + 1/90

Combined rate = (12 + 9 + 8) / 720 = 29/720

Combined rate = 29/720

The time taken together will be :

1 / combined rate = 1/(29/720) = 720 / 29 = 24.827 hours

You might be interested in
Given below are some inequalities. Plot the feasible region graphically.
igor_vitrenko [27]

Answer:

0-89x=78/-43

Step-by-step explanation:

6 0
3 years ago
Read 2 more answers
Operations definition please
ad-work [718]
The action of being active
8 0
3 years ago
Read 2 more answers
What is the distance between -4 and 7 on a number line?
tiny-mole [99]

Answer:

11

Step-by-step explanation:

7 0
3 years ago
Read 2 more answers
What is the result of subtracting the second equation from the first x-3y=6 and -8x-y=6
oksano4ka [1.4K]

Answer:

Step-by-step explanation:

Rearrange the equation by subtracting what is to the right of the equal sign from both sides of the equation :

                    x-3*y-(6)=0  

Step by step solution :

Step  1  :

Equation of a Straight Line

1.1     Solve   x-3y-6  = 0

"y=mx+b" is the formula of a straight line drawn on Cartesian coordinate system in which "y" is the vertical axis and "x" the horizontal axis.

In this formula :

y tells us how far up the line goes

x tells us how far along

m is the Slope or Gradient i.e. how steep the line is

b is the Y-intercept i.e. where the line crosses the Y axis

The X and Y intercepts and the Slope are called the line properties. We shall now graph the line  x-3y-6  = 0 and calculate its properties

Graph of a Straight Line :

 

 

Calculate the Y-Intercept :

Notice that when x = 0 the value of y is 2/-1 so this line "cuts" the y axis at y=-2.00000

 y-intercept = 6/-3 = 2/-1  = -2.00000  

Calculate the X-Intercept :

When y = 0 the value of x is 6/1 Our line therefore "cuts" the x axis at x= 6.00000

 x-intercept = 6/1  =  6.00000  

Calculate the Slope :

Slope is defined as the change in y divided by the change in x. We note that for x=0, the value of y is -2.000 and for x=2.000, the value of y is -1.333. So, for a change of 2.000 in x (The change in x is sometimes referred to as "RUN") we get a change of -1.333 - (-2.000) = 0.667 in y. (The change in y is sometimes referred to as "RISE" and the Slope is m = RISE

7 0
3 years ago
A letter is drawn at random from the word MATHEMATICS .Find the probability that the letter is vowel given that it appears only
Lapatulllka [165]
It should be 1 over 2 or 1 over 11 but im pretty sure its the first one I picked

5 0
3 years ago
Other questions:
  • Drag each figure to show if it is similar to the figure shown or why it is not similar.
    8·1 answer
  • Which expressions are equivalent to the given expression?
    5·1 answer
  • bernite is selling candy bars for a school fundraiser. the school paid $20 for a box of 15 king size candy bars and bernite sell
    11·1 answer
  • Gena wants to estimate the quotient of –21.87 divided by 4.79. Which expression shows the best expression to estimate the quotie
    15·2 answers
  • What does 2miles=yards?
    10·1 answer
  • A telephone exchange operator assumes that 8% of the phone calls are wrong numbers. If the operator is right, what is the probab
    14·1 answer
  • Find f(-3) PLEASE HELP
    7·2 answers
  • Which of the following pairs of numbers is matched with its correct greatest common factor? Select two that apply.
    10·1 answer
  • (5126789+123434425).5
    7·1 answer
  • 0=(x+2) squared minus 25
    9·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!