Atrain with an average speed of 125 km/h takes 2.5 hours to travel between two cities. what is the approximate distance between these two cities by rail

The approximate distance between two cities is 312.5 km

Step-by-step explanation:

Given as :

The average speed of the train = 125 km\h

The time taken tot ravel between two cities = 2.5 hours

Let The distance cover by rail = D km

So, Distance = Speed × time

Or, D = 125 km\h × 2.5 hours

∴   D = 312.5 km

Hence The approximate distance between two cities is 312.5 km  . Answer

x = ± 6i

step-by-step explanation:

x^2 = -36

take the square root of each side

sqrt(x^2) = sqrt(-36)

we know sqrt(ab) = sqrt(a) sqrt(b)

x = ±sqrt(36) sqrt(-1)

we know that sqrt (-1) = i

x = ± 6i

x/3-10=8

x/3=18

x=48