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
kramer
3 years ago
9

two passenger train traveling in opposite directions meet and pass each other. Each train is 1/18 miles long and is traveling at

40 miles per hr. How many seconds after the front parts of the trains will meet their rear parts pass each other.​
Mathematics
1 answer:
xz_007 [3.2K]3 years ago
6 0

9514 1404 393

Answer:

  5 seconds

Step-by-step explanation:

Suppose the front parts of the trains meet at point A. Since both are the same length and traveling the same speed, each will pass point A in time ...

  time = distance/speed

  time = (1/18 mi)/(40 mi/h) = (1/720 h) × (3600 s)/(1 h) = 5 s

That is, the rear part of each train will be at point A 5 seconds after the front part.

The rear parts will pass each other 5 seconds after the front parts meet.

You might be interested in
A 2-column table has 5 rows. The first column is labeled x with entries negative 2, negative 1, 0, 1, 2. The second column is la
Minchanka [31]

The exponential function which represented by the values in the table is f(x)=4(\frac{1}{2})^{x} ⇒ 3rd answer

Step-by-step explanation:

The form of the exponential function is f(x)=a(b)^{x} , where

  • a is the initial value (when x = 0)
  • b is the growth/decay factor
  • If k > 1, then it is a growth factor
  • If 0 < k < 1, then it is a decay factor

The table:

→  x    :    f(x)

→ -2    :    16

→ -1     :    8

→  0    :    4

→   1    :    2

→   2   :     1

∵ f(x)=a(b)^{x}

- To find the exponential function substitute the value of x and f(x)

  by some values from the table to find a and b, at first use the

  point (0 , 4) to find the value of a

∵ x = 0 and f(x) = 4

∴ 4=a(b)^{0}

- Remember that any number to the power of zero equal 1

  except the zero

∵ b^{0}=1

∴ 4 = a(1)

∴ a = 4

Substitute the value of a in the equation

∴ f(x)=4(b)^{x}

- Chose any other point fro the table to find b, lets take (1 , 2)

∵ x = 1 and f(x) = 2

∴ 2=4(b)^{1}

∴ 2 = 4 b

- Divide both sides by 4

∴ b=\frac{2}{4}=\frac{1}{2}

- Substitute the value of b in the equation

∴ f(x)=4(\frac{1}{2})^{x}

The exponential function which represented by the values in the table is f(x)=4(\frac{1}{2})^{x}

Learn more:

You can learn more about the logarithmic functions in brainly.com/question/11921476

#LearnwithBrainly

8 0
3 years ago
Read 2 more answers
Find the number of possible outcomes if 12 quarters 4 dimes and 1 nickel are tossed
Gala2k [10]
The answer is 345 because you are suppose to multiply then add them togther
7 0
2 years ago
Brian is solving the equation x^2 -3/4 x =15. what value must be added to both sides of the equation to make the left side a per
vekshin1
To complete the square we get the coefficient of x, divide it by 2 then square it.
-3/4 divided by 2 =
-3/8 and then squared it equals
9 / 64
answer is a


3 0
3 years ago
Help, how do I do number 16??
seropon [69]
Combine like terms Finding the next equation
3 0
2 years ago
It's make-your-own-dish night at your favorite pasta restaurant. The restaurant offers 5 types of pasta and 4 different sauces.
densk [106]

Answer:

there are 20 different combinations if that was the question.

Step-by-step explanation:

Formula :

Combination(event 1) times Combinations (Event2)

3 0
3 years ago
Other questions:
  • Evaluate each expression if a = 6, b = 3, and c = 2.
    8·1 answer
  • Solve for y: xy-d=m?
    8·2 answers
  • Finding the area of A=1/2bh
    8·1 answer
  • CAN SOMEONE PLEASE HELP ME WITH THIS PROBLEM​
    12·1 answer
  • Write a function and solve for the
    11·1 answer
  • How does one solve for the n+1st term with the nth term of a sequence
    7·2 answers
  • What is the value of x?
    14·1 answer
  • Over the summer, Delilah collected 75 books from her personal library that she had outgrown. She decided to donate them to the m
    7·2 answers
  • Jeffrey's babysitter stayed from 6:25 p.m. until 10:40 p.m. for how much time does the babysitter need to be paid
    10·1 answer
  • HELP IVE GOT 5 MINS!!
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!