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
HELP ASAP !!! The table shows several points for function j(t).
max2010maxim [7]

Answer:

d on edge

Step-by-step explanation:

its just the table flipped

4 0
3 years ago
Read 2 more answers
Does (2, -1) make this a true statement? Why or why not?<br> 3x + 2y = 4
kvv77 [185]

Answer: Yes

Step-by-step explanation:

So a coordinate pair is always set up (x,y) so you plug the x term in the coordinate pair into the x in the equation and the y term in for the y. 3×2 + 2×-1. Multiply them together and you end up with 4.

3 0
3 years ago
4. Joe likes sports. He has 4 soccer medals, 1 tennis medal, 3 swimming medals and 5
Lady_Fox [76]

Answer:

4:3

Step-by-step explanation:

He has 4 Soccer Medals, 3 Swimming Medals

So it would be 4:3

6 0
3 years ago
The mean of birth weights for individual babies in the population is 3,500 grams. What is the mean birth weight for the sampling
Gala2k [10]

Answer:

The mean birth weight for the sampling distribution is

3,500 grams.

Step-by-step explanation:

The sample mean is the average of the sample values collected divided by the number of the samples, while the population mean is the average or mean of all the values in the population.  If the sample is random and the sample size is large enough, then the sample mean would be a good estimator of the population mean.  This implies that with a randomly distributed and unbiased sample size, the sample mean and population mean will be equal, according to the central limit theorem. Therefore, the mean of the sample means will always approximate the population mean.

8 0
3 years ago
Simplify
Scorpion4ik [409]

Answer:

1

Step-by-step explanation:

using the rule of exponents

(\frac{a}{b}) ^{-1} = \frac{b}{a} , then

\frac{123}{321} × \frac{456}{654} × \frac{789}{987} × \frac{321}{123} × \frac{654}{456} × \frac{987}{789}

[ \frac{123}{321} × \frac{321}{123} = 1 , \frac{456}{654} × \frac{654}{456} = 1 , \frac{789}{987} × \frac{987}{789} = 1 ]

= 1 × 1 × 1

= 1

7 0
2 years ago
Other questions:
  • 12&lt;y(8-y) any helpp please
    7·1 answer
  • Complete the equation of the line through (-9,-9) and (-6,0) y=?
    7·2 answers
  • Find the value of x to the nearest tenth.
    5·1 answer
  • 34.989 to the nearest tenth
    8·1 answer
  • Traci has four blue pens and three red pens. She has twice as many black pens as blue pens. What fraction represents the number
    8·2 answers
  • In 2007, there were more than 8.14 million cars for sale. The number of cars then decreased by 23% per year. Write an exponentia
    8·1 answer
  • The same amount deposited weekly into a bank account can be represented by a
    8·1 answer
  • Mary walks from comer D to comer E to comer F on a city block that measures 264 feet wide and 900 feet long. Kate walks
    14·1 answer
  • The highest point in the mountains of Seattle is 5,833 meters above sea level. The lowest point in the valley is 57 meters below
    13·1 answer
  • What’s the percentage as a decimal
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!