The correct answer is 2x^3
Hope this helped :)
Step-by-step explanation:
.......................
Train A speed= 70 km/h north
Train B speed= 75 km/h south
Opposite directions= add speeds 70+75=145
Distance= 435 Km
Time= d/s; 435/145= 3 hours
It would take 3 hours for the trains to be 435 kilometers apart
Answer:
B
Step-by-step explanation: