answer.
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
icang [17]
2 years ago
5

 A barrel contains 56 litres of kerosene. It has two taps. One tap draws 500 ml every 6 minutes. After first 5 litres are drawn

from the barrel, the second tap also starts. It draws 1 litre in every 5 minutes. How many hours will be taken in all to empty the tank?​
Mathematics
1 answer:
tigry1 [53]2 years ago
3 0

Answer:

The tank will empty in 4 hours.

Step-by-step explanation:

Since a barrel contains 56 liters of kerosene, and it has two taps, one tap that draws 500 ml every 6 minutes and after first 5 liters are drawn from the barrel, the second tap also starts, and it draws 1 liter in every 5 minutes, to determine how many hours will be taken in all to empty the tank, the following calculation must be performed:

0.5 x X = 5

X = 5 / 0.5

X = 10

10 x 6 = 60

1 hour = 51 liters

1 hour 30 minutes = 51 - (1 x 6) - (0.5 x 5) = 42.5

2 hours = 42.5 - (1 x 6) - (0.5 x 5) = 34

2 hours 30 minutes = 34 - (1 x 6) - (0.5 x 5) = 25.5

3 hours = 25.5 - (1 x 6) - (0.5 x 5) = 17

3 hours 30 minutes = 17 - (1 x 6) - (0.5 x 5) = 8.5

4 hours = 8.5 - (1 x 6) - (0.5 x 5) = 0

Therefore, the tank will empty in 4 hours.

You might be interested in
The graphs below have the same shape. What is the equation of the blue
Soloha48 [4]
It would be (x-4)^2

It has a horizontal shift of 4 to the right
6 0
1 year ago
Read 2 more answers
Pens cost 15 pence each.
ch4aika [34]

Answer:

The amount the school pays is £32.40

Step-by-step explanation:

The cost of each pen = 15 pence

The cost of each ruler = 20 pence

The number of pens bought by the school = 150

The number of rulers bought by the school = 90

The cost reduction (discount) on the items bought = 1/5

Therefore, we have;

The total cost of the pens bought by the school = 150 × 15 = 2250 = £22.50

The total cost of the rulers bought by the school = 90 × 20 = 1800 = £18.00

The total cost of the writing materials (rulers and pens) bought by the school = £22.50 + £18.00 = £40.50

The discount = 1/5 total cost reduction = 1/5×£40.50  = $8.10

The amount the school pays = The total cost of the writing materials - The discount

The amount the school pays = £40.50 - $8.10 =  £32.40

The amount the school pays =  £32.40.

7 0
2 years ago
Which properties are present in a table that represents an exponential function in the form y-b* when b > 1?
Oksana_A [137]

Answer:

<u>Properties that are present are </u>

Property I

Property IV

Step-by-step explanation:

The function given is  y=b^x  where b > 1

Let's take a function, for example,  y=2^x

Let's check the conditions:

I. As the x-values increase, the y-values increase.

Let's put some values:

y = 2 ^ 1

y = 2

and

y = 2 ^ 2

y = 4

So this is TRUE.

II. The point (1,0) exists in the table.

Let's put 1 into x and see if it gives us 0

y = 2 ^ 1

y = 2

So this is FALSE.

III. As the x-value increase, the y-value decrease.

We have already seen that as x increase, y also increase in part I.

So this is FALSE.

IV. as the x value decrease the y values decrease approaching a singular value.

THe exponential function of this form NEVER goes to 0 and is NEVER negative. So as x decreases, y also decrease and approached a value (that is 0) but never becomes 0.

This is TRUE.

Option I and Option IV are true.

7 0
2 years ago
Read 2 more answers
An employment agency requires applicants average at least 70% on a battery of four job skills tests. If an applicant scored 70%,
brilliants [131]

Answer:

atleast 52

Step-by-step explanation:

Given that an employment agency requires applicants average at least 70% on a battery of four job skills tests.

An applicant scored 70%, 77%, and 81% on the first three exams,

Since weightages are not given we can assume all exams have equal weights

Let x be the score on the 4th test

Then total of all 4 exams = 70+77+81+x\\= 228+x

Average should exceed 70%

i.e.\bar X \geq 70\\Total\geq 70(4) =280

Comparing the two totals we have

228+x\geq 280\\x\geq 280-228 = 52

Hemust  score on the fourth test a score atleast 52 to maintain a 70% or better average.

3 0
2 years ago
What is the unit rate for 500.48 meters in 27.2 hours?
Daniel [21]
27.2h÷1h=27.2
500.48m in 27.2h
(÷27.2)
18.4 in 1h

Ans: 18.4m/h
4 0
2 years ago
Read 2 more answers
Other questions:
  • Which values of c will cause the quadratic equation –x2 + 3x + c = 0 to have no real number solutions? Check all that apply.
    12·2 answers
  • The answer plz I need the answer
    14·1 answer
  • A child pushes a playground merry-go-round so handle A moves to position B. The radius of the merry go round is 5 feet and the d
    14·1 answer
  • You have been observing a population of swallowtail butterflies for the last 10 years. the size of the population has varied as
    5·1 answer
  • 9. a cylinder and its dimensions are shown in the diagram, which equation can be used to find V, the volume of the cylinder in c
    14·1 answer
  • At East Middle School, there are 58 left-handed students and 609 right-handed students. The numbers of left- and right-handed st
    7·2 answers
  • Write an equation of the line passing through the point (5,1) that is perpendicular to the line 5x+3y=15
    12·2 answers
  • Solve the system of inequalities: y + 2x &gt; 3 and y Greater-than-or-equal-to 3.5x − 5 The first inequality, y + 2x &gt; 3, is
    16·1 answer
  • The Hernandez family orders 3 large pizzas. They cut the pizzas so that each pizza has the same number of slices, giving them a
    8·2 answers
  • The range for the Kentucky temperatures is . The range for the Illinois temperatures is . The IQR for the Kentucky temperatures
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!