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
Bas_tet [7]
3 years ago
9

What's the answer to this question

Mathematics
1 answer:
frutty [35]3 years ago
6 0

Step-by-step explanation:

there are several things to be considered to solve this.

the strategy is to caucuses the volume of the full "box", and then to deduct the 3-dimensional triangle that is "cut off" from the oil.

then we know the volume of the pool.

next step is to calculate the volume of a "box" with the same layout but is only 20 cm deep.

then we know how much volume can be pumped out in 30 minutes.

and then we divide the whole volume by that small volume to see how many 30-minues units are needed to empty the whole pool.

and then we transform the 30- minutes units into actual minutes or hours.

so, let's begin :

the whole box's volume is

2×1×1.4 = 2.8 m³

the volume of the 3-D triangle we need to subtract is the area of the triangle × width of the pool (this pool width is the height of the 3-D triangle).

2×(1.4 - 0.6) × 1 / 2 = 2×0.8 × 1 / 2 = 1.6/2 = 0.8 m³

so, the volume of the pool is

2.8 - 0.8 = 2 m³

now, how much volume can the pump eliminate in 30 minutes ?

the content of a box

1×2×0.2 = 0.4 m³

as 20 cm = 0.2 m

so, the pump pumps out 0.4 m³ in 30 minutes.

and we need to empty 2 m³.

that means we need

2 / 0.4 = 5

30-minues units = 5×30 = 150 minutes = 2.5 hours.

Colin has to wait 2.5 hours (150 minutes) to empty the complete pool.

You might be interested in
Please see the question attached and pleaaasssseeeeeeeee help god will bless youu
patriot [66]
I think You should break it down to the First and third One because of

7 0
3 years ago
1. Find the measures of the following to the nearest tenth of a degree.
Dvinal [7]
B cause you take y times it by the circumference
4 0
3 years ago
It takes a person 50 minutes to get to campus. He spends t minutes walking to the bus stop and the rest of the time riding the b
amid [387]

Answer:

16.2

Step-by-step explanation:

cause. ur a noob at math

8 0
3 years ago
9x^2+16=0 what are the solutions
seraphim [82]
X=4i/3,-4i/3

Need 20 characters
8 0
3 years ago
Solve 5x-y=5 and 2y-x^2=11 without using trial improvement
iren2701 [21]

Answer:

x = 7, y = 30  and  x = 3, y = 10

Step-by-step explanation:

5x - y = 5, then y = 5x - 5

2y - x^2 = 11

2(5x - 5) - x^2 = 11

10x - 10 - x^2 = 11

-x^2 + 10x -10 = 11

-x^2 + 10x -21 = 0

x^2 - 10x + 21 = 0

(x - 7)(x - 3) = 0

x = 7, y = 30

x = 3, y = 10

8 0
3 years ago
Other questions:
  • You are testing the claim that the mean GPA of night students is different from the mean GPA of day students. You sample 30 nigh
    14·1 answer
  • How many square feet of outdoor carpet will we need for this hole? Need pronto
    13·1 answer
  • Please answer question now
    12·2 answers
  • How do I evaluate <br> F(-1/4)=4x-18
    6·1 answer
  • The table list the frozen treats sold at the high school football concession stand by the booster club. The items along with the
    14·2 answers
  • Anita and Leah each had a bottle of water. The fraction of the bottle that Anita
    6·1 answer
  • Please help, I I beg you please
    11·1 answer
  • Find the following for the function f(x) = x/x^2+1
    13·1 answer
  • Please help me my teacher doesn't know how to teach
    9·2 answers
  • Y=26-2 use a function ruler
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!