Question

Plz answer Q8,10, and 11​

Answer 1

Answer:

ullu ke patha hai tu

kutte

Step-by-step explanation:

Answer 2

Step-by-step explanation:

8. suppose the speed of the train is x km/h

So, the train goes x km in 1 hour

the train goes 1 km in 1/x hour

the train goes 360 km in 360/x hour

after that the speed of the train was (x+5) km/h

then train goes 360 km in 360/(x+5) hour

360/x - 360/(x+5) = 1

=> (360x + 1800 - 360x)/(x(x + 5)) = 1

=> x² + 5x = 1800

=> x² + 5x - 1800 = 0

=> x² + (45 - 40)x - 1800 = 0

=> x² + 45x - 40x - 1800= 0

=> x(x + 45) - 40(x + 45)= 0

=> (x + 45)(x - 40)= 0

x + 45 = 0 x - 40 = 0

=> x = -45 => x = 40

(this is not possible)

speed of the train is 40 km/h