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
oksano4ka [1.4K]
3 years ago
7

A rectangluar swimming pool 25 feet long, 15 feet wide, and 7 feet deep is filled with water to a depth of 6 feet. The weight de

nsity of water is 62.4 lb ft 3 lb/ft^3. Calculate the work required to pump all of the water out over the top.
___________ ft-lb
Mathematics
1 answer:
marissa [1.9K]3 years ago
6 0

9514 1404 393

Answer:

  491,400 ft·lb

Step-by-step explanation:

The mass of the water is ...

  M = Vρ = LWHρ = (25 ft)(15 ft)(7 ft)(62.4 lb/ft³) = 163,800 lb

The average depth is 3 ft, so the work required is equivalent to that required to raise this mass 3 ft.

  W = (3 ft)(163,800 lb) = 491,400 ft·lb

You might be interested in
8 hundreds + 2 hundreds in standard form
jekas [21]
In standard form:
800+200
=1,000
5 0
3 years ago
Read 2 more answers
Gcf of 12 and 15 please help me.......
aivan3 [116]

Answer:3

Step-by-step explanation:the answer is 3 I did the math

5 0
3 years ago
The scale on a map is 1 cm:30 km. How many centimeters would be used to represent 45 kilometers?
topjm [15]
Hi there!

To solve this problem, let's set up a proportion: 1/30 = x/45. Now, cross-multiply to get an equation: 30x = 45. Now, divide each side by 30 to figure out how many centimeters would be used to represent 45 kilometers: x = 2/3 or 0.666 cm.

Hope this helps!! :)
If there's anything else that I can help you with, please let me know!
7 0
3 years ago
What’s the answer to 9 and 10???
Zigmanuir [339]

Answer:

9. C. division

10. D. addition

Step-by-step explanation:

When solving for X the goal is to get it all by itself on one side of the equation and to do that you have to undo the operations already in effect on it.  In number 9 the x is multiplied by 3 so to undo that you would need to divide by 3 and that would cancel out leaving the x by itself.  Then you would need to divide by 3 on the other side of the equation also to keep it balenced.  In number 10 the X is connected to the 10 through subtraction so to cancel that out you would subtract 10 from both sides to get the X alone.

I hope this helps and please don't hesitate to ask if there is anything still unclear!

3 0
3 years ago
Read 2 more answers
Approximate the solution to the equation above using three iterations of successive approximation. Use the graph below as a star
n200080 [17]

Answer:

<em>x=25/16</em>

Step-by-step explanation:

<u>Approximate Roots of Functions:</u>

We are required to find the root of  

\displaystyle 5^{-x}+7=\ 2x+4

Let's construct a function

\displaystyle f(x)=\ 5^{-x}+7-2x-4

Reducing:

\displaystyle f(x)= 5^{-x}-2x+3

The equation will have a solution when f(x)=0. We'll start from the approximate crossing point given in the graph (x=1.5)

\displaystyle f(1.5)=5^{-1.5}-2(1.5)+3\ =0.089

We'll move up on x=1.52  

\displaystyle f(1.52)=5^{-1.52}-2(1.52)+3=\ 0.046

We are closer to the solution, let's try some more up

\displaystyle f(1.54)=5^{-1.54}-2(1.54)+3=\ 0.0038

This value x=1.54 is close enough to the solution of the original equation

From the options given, \frac{25}{16} is the closest to our solution

\boxed{Answer:\ x=25/16}

8 0
4 years ago
Other questions:
  • What is the lowest factor of 27
    14·2 answers
  • 49w = −8<br> what is the value of w
    6·2 answers
  • Graph the linear equation. <br> y=-1/5x+3
    13·1 answer
  • How do you multiply matrices please help
    11·1 answer
  • 42x+45=56z<br> 43x+56=34z
    15·1 answer
  • ASAP!!!!!!!
    12·1 answer
  • Tay is making jam. The recipe calls for 3 strawberries for
    15·1 answer
  • which type of account is more suitable for saving money :a savings account! a debt card or a fixed deposit account​
    7·1 answer
  • Answer the question below.
    5·1 answer
  • 1.<br> (k — 7)(k – 1) =<br> 0
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!