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
tatyana61 [14]
3 years ago
8

A cold water pipe can fill a swimming pool in 4 hours, and a hot water pipe in 6 hours. If cold water pipe is turned on and hot

water pipe is turned on 3 hours later then how long will it take them to fill the pool together?
Mathematics
2 answers:
nirvana33 [79]3 years ago
8 0

Answer:

0.6 hours

Step-by-step explanation:

Let's say the swimming pool is 12,000 gallons.

The flow rate of the cold water pipe is:

12000 gal / 4 hr = 3000 gal/hr

The flow rate of the hot water pipe is:

12000 gal / 6 hr = 2000 gal/hr

If the cold water pipe is turned on for three hours, the volume of water is:

3000 gal/hr × 3 hr = 9000 gal

That leaves 3000 gallons.  The time to fill the rest of the pool with both the cold and hot water pipes is:

3000 gal / (3000 gal/hr + 2000 gal/hr) = 0.6 hr

It takes 0.6 hours (36 minutes).

Romashka [77]3 years ago
5 0

the answer:

0.9

just flip the nine upside down, you have the REAL answer. ;)

You might be interested in
Write an extended response that analyzes the effectiveness of John F Kennedy's Inaugural Address, January 20, 1961, based on you
ioda

Answer:

huhhh  i dont understand fully

Step-by-step explanation:

6 0
3 years ago
It takes 24 feet of fence to surround a square piece of land in Linda’s backyard. Linda wants to plant flowers everywhere but on
wel
The area of the side walk would be 5.5ft^2. Hope this helps
3 0
3 years ago
Read 2 more answers
plzz help me ....the inequality w>3.2 represents the weight of each pumpkin in pounds that is allowed to be picked to be sold
Fynjy0 [20]
Is the first 3.2 lbs?
8 0
3 years ago
Find the value of x in the isosceles triangle shown below.
joja [24]
Answer: C. 10

Explanation:

Take half right triangle from the isosceles triangle:

We get side lengths:

12/2 = 6, 8, and x

And use Pythagorean’s theorem to find x:

6^2 + 8^2 = x^2
36 + 64 = x^2
100 = x^2
10 = x
7 0
3 years ago
Find the value of x.
mylen [45]

Answer:

d

Step-by-step explanation:

7x + 2 and 10x - 9 are same- side interior angles and sum to 180° , that is

7x + 2 + 10x - 9 = 180

17x - 7 = 180 ( add 7 to both sides )

17x = 187 ( divide both sides by 17 )

x = 11 → d

4 0
2 years ago
Read 2 more answers
Other questions:
  • What number should be added to each expression to make a perfect square trinomial?
    8·1 answer
  • I need to find all possible roots for x
    6·1 answer
  • The temperature is 58° F. It gets warmer by h degrees and reaches to 65° F. Find h.
    12·2 answers
  • Someone plz help me!!!!!!!!!
    10·1 answer
  • To mix a shade of orange, a painter mixes 2.2 L of red paint and 4.8 L of yellow paint. Express your answer as a COLON in SIMPLE
    10·1 answer
  • Select all of the ordered pairs that are solutions to the system
    7·1 answer
  • Please help me please I beg u
    12·2 answers
  • What is the first step in evaluating this expression?
    11·2 answers
  • Will mark brainliest
    15·1 answer
  • Please help i’ll give you brainlest asap and please help me get this right!!
    11·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!