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
Marysya12 [62]
3 years ago
14

A 1 km long train is travelling at 30km/h. If the train enters a tunnel that is 1 km long, how much time will it take for the tr

ain to clear the tunnel?
Mathematics
1 answer:
Hoochie [10]3 years ago
8 0

Answer: 240 seconds OR 4 minutes

Step-by-step explanation:

Length of the train = 1 km

Length of the tunnel = 1 km

Therefore, length of the train + length of the tunnel = (1 + 1) km = 2 km

= 2000 m

Speed of the train = 30 km/hr = 8.333 metres per second

Therefore, time taken by the train to cross the tunnel = 2000 m/ 8.333 m/sec.

= 240 seconds = 4 minutes

You might be interested in
True or false inequalities have many solutions and equations have one solution​
umka2103 [35]

Answer:

Step-by-step explanation:

Like systems of equations, system of inequalities can have zero, one, or infinite solutions.

5 0
3 years ago
Read 2 more answers
Find the greatest possible error for each measurement 1 1/4c
Vikki [24]

Answer:

0.5

Step-by-step explanation:

6 0
3 years ago
Read 2 more answers
Rolando bought a bag of carrots that weighed 4.07 pounds and a bag of potatoes that weighed 2.88 pounds.How many poumds of veget
Tresset [83]
6.95 pounds of vegetables.
4 0
3 years ago
Credit cards are 0.76 mm thick. How thick is a stack of 10thirds credit cards piled one on top of the other???
natima [27]
You are correct its A
3 0
3 years ago
Read 2 more answers
The quotient of (x^3+3x^2-4x-12)/(x^2+5x+6)
Elis [28]

Answer: The quotient is (x-2).

Step-by-step explanation:

Since we have given that

f(x)=(x^3+3x^2-4x-12)\\\\and\\\\g(x)=x^2+5x+6\\\\So,\ \frac{\left(x^3+3x^2-4x-12\right)}{\left(x^2+5x+6\right)}

Now, we have to find the quotient of the above expression.

So, here we go:

Factorise\ (x^3+3x^2-4x-12)\\\\=\left(x^3+3x^2\right)+\left(-4x-12\right)\\\\=-4\left(x+3\right)+x^2\left(x+3\right)\\\\=\left(x+3\right)\left(x^2-4\right)

Now, we will divide the above simplest form with g(x):

\frac{\left(x+3\right)\left(x^2-4\right)}{\left(x+2\right)\left(x+3\right)}\\\\=\frac{x^2-4}{x+2}\\\\=\frac{\left(x+2\right)\left(x-2\right)}{x+2}\ using\ (a^2-b^2)=(a+b)(a-b)\\\\=x-2

Hence, the quotient is (x-2).


6 0
3 years ago
Read 2 more answers
Other questions:
  • What is the solution of the inequality -0.4× -1.2> 0.8
    10·1 answer
  • The expression 0.9(P−15)+0.05P represents the final price of a chair after two discounts were taken and a delivery fee. The deli
    5·1 answer
  • What are some of the applications for exponential functions
    15·2 answers
  • Freddy fazbear sells pizza slices that are 1/8 of a pizza pie for $1.50 each.A soda is sold for $1.25. If he sells 32 slices of
    9·1 answer
  • Which statement about this figure is true
    14·2 answers
  • ((3+10) −3) plus 10
    8·1 answer
  • PLS HELP ME ASAP I DONT HAVE TIME. IT ALSO DETECTS IF ITs RIGHT OR WRONG.
    12·1 answer
  • So if 15 + 5 is 20 and 30 + 30 is 60 then what is 9 + 12 x 15 plus if red is blue are purple then what is 2 + 5 = ? (Red = 1 (Or
    6·1 answer
  • Please help, no links. PLEASE!!!!
    5·1 answer
  • What is the decimal equivalent of 7/12?
    7·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!