Answer:
Step-by-step explanation:
Given :
add 2 to both sides
Therefore :
(n*3)+6-(n*2)=n+3
3n+6-2n=n+3
3n-2n-n=3-6 every n on the left and free numbers on the right
0=-3
contradiction, there are no solution
Given Data:
Time is taken = 24 seconds (to pass the pole)
Length of the train = 240 m
To Find:
Time to pass a 650m long platform =?
Solution:
The total distance traveled by train to cross a pole is equal to the length of the train; 240 m.
Distance = 240 m (in case of a pole)
Speed = distance/ time
Speed = 240 m/ 24 seconds
Speed = 10 m/s
So, the speed our train is traveling is 10 m/s.
Now, the time taken by the same train to cross a platform of 650 m can be calculated as,
Total distance = 650 m (platform length) + 240 m (train length)
Total distance = 890 m
Speed = distance/ time
Time = distance/ speed
Time = 890 m / 10m/s
Time = 89 seconds.
So, the time that it will take a train with a speed of 10 m/s and 240 m long to cross a plate form of 650 m is 89 seconds.
To know more about the relationship between speed, distance, and time, check out the link below:
brainly.com/question/23774048?referrer=searchResults
#SPJ4
Answer:
Step-by-step explanation:
Given the expression
Follow the PEMDAS order of operations
calculate within parentheses
calculate exponents
Multiply and divide (left to right)
Add and subtract (left to right)
Thus,
Answer:
I think the answer is (-3,1)