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
babunello [35]
3 years ago
15

A train leaves Little Rock Arkansas and travels north at 75 kilometers per hour. Another train leaves at the same time and trave

ls south at 85 kilometers per hour. How long will it take before they are 640 kilometers apart?
Mathematics
1 answer:
Mama L [17]3 years ago
4 0

Answer: it will take them 4 hours to be 640 kilometers apart.

Step-by-step explanation:

Let t represent the time it will take for both trains to be 640 kilometers apart. It means that the total distance that both trains will covered in t hours is 640 kilometers.

Distance = speed × time

A train leaves Little Rock Arkansas and travels north at 75 kilometers per hour. Distance covered after t hours would be 75 × t = 75t

Another train leaves at the same time and travels south at 85 kilometers per hour. Distance covered after t hours would be 85 × t = 85t

Since the total distance covered is 640 kilometers, then

75t + 85t = 640

160t = 649

t = 640/160

t = 4 hours

You might be interested in
Help me please I pay anyone
Rudiy27
IF THOU KISS (NOT) me not it is the answer you’re welcome
4 0
2 years ago
The complement of 10 percent is 90 percent or in decimal .90.
jonny [76]
What is the question?
5 0
3 years ago
What are 2 answers that can equal 49 in multiplication
jonny [76]
Make a guess and check table to figure out if you do not know it off the top of your head. 

The answer is 7 and 7
5 0
3 years ago
Read 2 more answers
I want to know the answer of A to self check the answer i got! Would you write the expression and take away the area of the inte
V125BC [204]
It is said the blue card is a rectangle, so you don’t have to minus the inside rectangle. :)
7 0
3 years ago
What is the slope?
cestrela7 [59]

Answer:

5/6

Step-by-step explanation:

rise over run

50/60= 5/6

7 0
3 years ago
Other questions:
  • Jim hikes 2/3 mile every 1/4 hour. How long will it take Jim to hike 24 miles? Explain.
    12·2 answers
  • I NEED HELP ASPAP!!!!!!
    11·1 answer
  • 24 is 60% of what number
    8·1 answer
  • 85.4 to it's lowest terms
    14·1 answer
  • Can somebody explain this to me when 2du = 16xdx ???
    15·1 answer
  • Admission to the fair costs $5. Each ticket for a ride costs $1.50. You have $20 to spend at the fair on admissions and rides. E
    9·1 answer
  • A student answers ​90% of the questions on a math exam correctly. If she answers 27 questions​ correctly, how many questions are
    7·1 answer
  • ABC = DEF What corresponds with B?
    8·2 answers
  • What is angle Z? (I think it's 105⁰ since it's corresponding but I want to make sure.)​
    14·1 answer
  • There are 96 football players at all levels at Davenport High School. If two-thirds of the players make the honor roll for their
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!