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
Elena-2011 [213]
3 years ago
8

A train 100 m long crosses a pole in 5 seconds.Find the speed of the train in kilometre per hour.​

Mathematics
1 answer:
In-s [12.5K]3 years ago
6 0

Answer:

\sf72  km/h

Step-by-step explanation:

Distance covered by the train in crossing the pole = 100 m.

\sf Time \:  taken=5 \:  seconds

\sf \: Speed  \: of \: the \: train =  \frac{Distance }{Time}

\sf =  \frac{100}{5} \:  m/s

\sf \:  = 20 \: m/s

\sf \: =  20 \times \frac{18}{5}  \: km/h

\sf = 72 \: km/h

  • Hence, the speed of the train is 72 km/h
You might be interested in
2. Solve for x: 2(x - 5) = x + 3(x + 2)​
MrMuchimi

Answer:

x=-8

Step-by-step explanation:

5 0
2 years ago
Read 2 more answers
Find the number of sides of a regular polygon if the sum of its interior angle is 1440
scoundrel [369]
The formula is 180(n-2)= 1140 then you divide 1140 by 180 to get 8 so then it would like like n-2=8 add the 2 over and n (being the number of sides)= 10 so your answer will be 10
8 0
3 years ago
How do you solve 3x+3y=-15 and -3x+y=3
Lilit [14]

Answer:

Step-by-step explanation:

Substitute x and y values for zero. Or

3 0
3 years ago
What is the solution to this equation?<br><br> 7- 3√2-x=12
dedylja [7]

Answer:

x=-5-3\sqrt{2}

It cannot be more simplified.

4 0
3 years ago
Read 2 more answers
Which is a solution to (x – 3)(x + 9) = –27?<br><br> x = –9<br> x = –3<br> x = 0<br> x = 6
Margarita [4]
Expand
x²+6x-27=-27
add 27 both sides
x²+6x=0
factor
x(x+6)=0
set to zero

x=0

x+6=0
x=-6


x=0 or -6

answer is 0 since -6 is not listed
8 0
3 years ago
Read 2 more answers
Other questions:
  • A square has an area of 110 square units. What is the approximate length of each side
    7·1 answer
  • A computer program consists of two blocks written independently by two different programmers.the first block has an error with p
    15·2 answers
  • X + y = 4 x - 2y = -5 If the first equation is multiplied by 2 and then the equations are added, the result is _____.
    10·2 answers
  • A rectangle has a perimeter of 34 cm and an area of 52 cm2. its length is 5 more than twice its width. write and solve a system
    5·1 answer
  • A right triangle is shown. the base has a side length, b, of 30cm. the height, h, is 10cm. what is the length, in centimeters, o
    12·1 answer
  • How to solve eight more than the difference of four and 3
    14·1 answer
  • sum of age of Vishal and Manoj is 48 years. if the age of Vishal is three times the age of Manoj, find there age. ​
    15·1 answer
  • Enter the correct answer in the box. Write the factored form of the least common denominator needed to simplify this expression.
    9·1 answer
  • There are three clubs at Redwood High School: Debate, Student council, and Key club. There are 1000 students in the school. And
    6·1 answer
  • PLEASE I NEED HELP 10 points (dont waste them) What is the area of this figure?
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!