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
Veronika [31]
3 years ago
8

An oil tanker can be emptied by the main pump in 4 hours. An auxiliary pump can empty the tanker in 7 hours. If the main pump is

started at 5 PM​, when should the auxiliary pump be started so that the tanker is emptied by 8 PM​?
Mathematics
1 answer:
Taya2010 [7]3 years ago
8 0

Answer: 1:00

Step-by-step explanation: if you start at 12:00 then you finish at 7:00 if you start at 1:00 then both finish by 8:00

You might be interested in
Create three fractions whose product is -5/24. You may only use fractions between -8/9 to 8/9 and you can only use a fraction on
damaskus [11]

Answer:

We find 3/4-5/24 = 0.54166666666 and try 2/7 x 6/8 = 0.21428571428

this is 0.069 too much we look at this as a fraction = 0.07 which is 1/10 approx of the 6/8. we then reapply 7/9 x 2/7 x 3/3 = 0.2

So we went up by 1 and can show another

2/7 x 7/10 = 2.0

So to 1dp there is lots of fractions including 2/7 x 7/9 = 2.0

But for three fractions that multiply together we can chose 5/7 x 2/6 x 6/6 = 2.0  As 5 x 2 x 6 = 60 and 60/360-102 = 60/258 = 0.20 and divided 198 =numbers 8 and 1/3 work with = 1.98/8.3 = 2.38554

We try again 1.68/8.3 = -0.2024 = 2/8 x 8/10 = 0.2

The balance is 1.3/2 x 0.8/2 = 0.65 x 0.333 = 13/20 x 1/3

3/5 x 1/3 = 0.2

8 0
3 years ago
Using the quadratic formula to solve 11x^2-4x=1 what are the values of x ?
Kaylis [27]

The answer should be the 1st one.

Just use the quadratic formula and plug in the necessary numbers when requested and work from there.

8 0
3 years ago
Help ( i need to show my work)!!!
hodyreva [135]

its 7 because 7*7=49 and 49*7=343

so the cube root of 343 would be 7

8 0
3 years ago
What is five + five
LekaFEV [45]
Five plus five is ten
6 0
3 years ago
Construct a 2 ×2 Matrix whose elements aij are given by a ij = i+j
beks73 [17]

Answer:

the required matrix is can be given as

8 0
3 years ago
Other questions:
  • What the surface area
    13·1 answer
  • What is the negation of the following statement: "I exercise and I feel tired."
    9·2 answers
  • I’m a mixed number. My denominator is the sixth prime number. My numerator is one less than my denominator. I am greater than fi
    6·1 answer
  • If you borrow $675 for six years at an interest rate of 10%, how much interest will you pay?
    5·1 answer
  • A local gymnasium is trying to find out what additional classes they should offer. They send out 50 surveys to a random selectio
    12·1 answer
  • The circumference of c is 56 cm. what is the length of arc ab
    10·1 answer
  • Also need help with this problem too if anyone can help
    10·1 answer
  • PLZ HELP ITS URGENTTTT FIRST TO ANSWER WILL BE BRAINLIEST<br> 3x³y²/9xypower 5
    14·2 answers
  • Can you’ll Plzzz helpppp
    11·2 answers
  • If you were a member of water supply OR flood emergency department and you had foreseen a situation where a river near your city
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!