Answer:
Step-by-step explanation:
we know that
The area of a triangle is equal to
------> equation A
where
b is the base of the triangle
h is the height of the triangle
In this problem the dimensions of the triangle are increased by a scale factor of
so
the new dimensions of the triangle are
The new area of the triangle will be
------> equation B
Substitute equation A in equation B
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
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ST = 2TW since W is the midpoint of ST. So:-
8x + 10 = 2(6x - 7)
8x + 10 = 12x - 14
24 = 4x
x = 6
Therefore SW = ST = 58 and TW = 29
The cube root of -27 is -3
3√-27 = -3
You can check this by plugging your answer back it
X= -3
-3^3 = -27
Highest common prime factor is three