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
ipn [44]
2 years ago
11

A train that is 80 meters long travels 240 meters in 6 seconds. How many seconds would it take the train to pass through a 480 m

eter long tunnel.
Mathematics
2 answers:
snow_tiger [21]2 years ago
5 0
Speed=distance / time
Data:
distance=240 m
time=6 s

Speed of this train=240 m / 6 s=40 m/s

The train pass through 480 meters of tunnel, therefore the distance will be:
distance of the tunnel + distance of the train= 480 m + 80 m=560 m

speed=distance / time   ⇒  Time=distance / speed
Data:

distance=560 m
speed=40 m/s

Time=560 m/ (40 m/s)=14 s

Answer: 14 seconds will take the train to pass through a 480 m long tunnel. 
Elena L [17]2 years ago
3 0

Answer:

Speed=distance / time

Data:

distance=240 m

time=6 s

Speed of this train=240 m / 6 s=40 m/s

The train pass through 480 meters of tunnel, therefore the distance will be:

distance of the tunnel + distance of the train= 480 m + 80 m=560 m

speed=distance / time   ⇒  Time=distance / speed

Data:

distance=560 m

speed=40 m/s

Time=560 m/ (40 m/s)=14 s

Answer: 14 seconds will take the train to pass through a 480 m long tunnel

Step-by-step explanation:

You might be interested in
What is 20% of 30% of 40% of $50
GarryVolchara [31]

20% of $50 = $10

30% of $50 = $15

40% of $50 = $20

Multiply 20% by $50

30% by $50

40% by %50

6 0
3 years ago
Ignore the stuff around it ,could someone explain me this?
Ierofanga [76]

Answer:

The lines blue and green are perpendicular

Step-by-step explanation:

we know that

If two lines are perpendicular, then their slopes are opposite reciprocal (the product of their slopes is -1)

The formula to calculate the slope between two points is equal to

m=\frac{y2-y1}{x2-x1}

step 1

Find the slope of the blue line

we have the points

(-1,-3) and (0,3)

substitute

m=\frac{3+3}{0+1}

m=\frac{6}{1}=6

step 2

Find the slope of the red line

we have the points

(3,-3) and (4,2)

substitute

m=\frac{2+3}{4-3}

m=\frac{5}{1}=5

step 3

Find the slope of the green line

we have the points

(-4,-1) and (2,-2)

substitute

m=\frac{-2+1}{2+4}

m=-\frac{1}{6}

step 4

Compare the slopes

Blue line ----> m=6

Red line ----. m=5

Green line ---> m=-\frac{1}{6}

so

The slope of the blue line and the green line are opposite reciprocal ( their product is equal to -1)

therefore

The lines blue and green are perpendicular

7 0
3 years ago
What is 17/12 as a mixed number
Butoxors [25]

Answer:


Step-by-step explanation:


7 0
2 years ago
Read 2 more answers
A cylinder has a volume of 140 x cubic meters and a height of 14 meters. What is the area of the base?
AleksandrR [38]

Answer: I think it's a

Step-by-step explanation:

6 0
3 years ago
Using only words solve 8x+3=27 step by step​
erik [133]

Answer:

X=3

Step-by-step explanation:

Subtract 3 from both sides

Simplify 27-3 to 24

Divide both sides by 8

Simplify 24/8 to 3

5 0
3 years ago
Read 2 more answers
Other questions:
  • PLS HURRY!!<br> Simplify.<br> 7/3+3(2/3−1/3)^2 Enter your answer in the box.
    15·2 answers
  • Is the following sentence a statement or not a statement? open the door. it is a statement. it is not a statement. cannot tell
    14·2 answers
  • HEEEEEEEEEEEEELEP!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
    11·2 answers
  • Tyron takes 3/4 hours to paint a wall. His brother takes 1/3 of the the time he takes.how long will his brother take to paint 5
    12·1 answer
  • How do I solve this?
    11·1 answer
  • What is equivalent to 8(2x-4)
    14·2 answers
  • Can someone just explain in words what I have to do please
    5·2 answers
  • Does the following situation describe opposite quantities combining to make zero? Explain.Tanya makes 2 cups of cleaning solutio
    9·1 answer
  • Which of the following coordinate points represents the x-intercept of the equation 2x + 3y = 10?
    9·2 answers
  • A box contains orange balls and green balls. The number of green balls is seven more than three times the number of orange balls
    13·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!