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
Tasya [4]
3 years ago
11

Two trains on opposite tracks leave the same station at the same time. One train travels at an average speed of 80 kilometres pe

r hour and the other travels at an average speed of 70 kilometres per hour. How long after they leave the station will they be 50 km apart?
Mathematics
1 answer:
GREYUIT [131]3 years ago
7 0

9514 1404 393

Answer:

  20 minutes

Step-by-step explanation:

The trains are separating at the rate of 80 +70 = 150 km/hour. The time required to be 50 km apart is then ...

  time = distance/speed = (50 km)/(150 km/h) = 1/3 h = 20 minutes

You might be interested in
12. In PQR if mP is 14 less than five times x, mQ is five less than x, and mR is nine less
mash [69]

Answer:

Step-by-step explanation:

mP=5x-14

mQ=x-5

mR=2x-9

we know that all the angles in a triangle= 180

that means (5x-14)+(x-5)+(2x-9)=180

5x-14+x-5+2x-9=180  we add the variables and the numbers

8x=180+28

8x=108

x=26

mP=130-14=116

mQ=26-5=21

mR=43

6 0
2 years ago
If Figure X is similar to Figure Y, and Figure Y is similar to Figure Z, can you conclude that Figure X is similar to Figure Z?
nexus9112 [7]
Yes, transitive property of equality
8 0
3 years ago
Given the check digit is 3, find the missing X for the master card number 5164 2X13 2705 0183
Gekata [30.6K]

Answer:

9

Step-by-step explanation:

So there's 3 1's, 2 2's, 2 3's, 1 4, 2 5's, a 6, a 7, an 8, 2 0's, and no 9's.  

5 0
3 years ago
Read 2 more answers
Please help I'll give brainliest
Liula [17]

the answer is going to be 6.0

Step-by-step explanation:

1.5 + 1.5 = 3

3 + 3 = 6

6 0
3 years ago
NO LINKS WHATSOEVER!!! SPAMMERS WILL BE IMMEDIATELY REPORTED!!! A gardener plants a row of eight trees chosen from three maples,
12345 [234]

Answer: 362,880

Step-by-step explanation: At first glance of the question, it doesn't seem that the order matters, which would make it a question of how many combinations there are.  The simple way to look at it is that there are 9 trees and he's planting 8, leaving out 1.  Since there are 9 possible trees to leave out, there are 9 possible combinations of which 8 trees to plant.  

The formula would be 9!/([9-8]!*8!) = 9

If the question is indeed asking for permutations (order matters), since you are choosing 8 out of 9 the formula would be 9!/(9-8)! = 9!/1! = 9! = 362,880

8 0
3 years ago
Other questions:
  • 16,000 lb= __ T<br> 3 lb= __oz<br> lb= pounds T=tons OZ=ounce
    9·2 answers
  • Solve 2x - 5 = 7 what is the answer to this question it’s for algebra
    14·2 answers
  • Please help! this question is a bit tricky in my opinion.​
    14·2 answers
  • A kite has a perimeter of 70 centimeters. One of the shorter sides measures 16 centimeters. What are the lengths of the other th
    5·2 answers
  • GIVING OUT BRAINLIST QUICK! NUMBER 6
    13·1 answer
  • Jeff and his friends win a prize.
    14·1 answer
  • Which is the discriminant of 2x2 - 4x + 7 = 0
    8·1 answer
  • Which set of ordered pairs satisfies an inverse variation?
    10·1 answer
  • Derek's truck used 8 gallons of gasoline to travel 320
    8·2 answers
  • Help on this question please?
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!