Ranked provisional starting rank question

I want to know if the win is just win or if you get more MMR if you literally stomp the enemy team also what happens when you ace all 10 games and win them all? Does winning or losing first game have a huge diffrance, does the last game winning or losing affect it?

Does winning games in row in provisionals also increase the amount of LP gained?

Anything else about the provisional ranking that I should maybe know?

Thanks alot.