It's both formal and informal. It depends on how you say it. If you say "Adiós, señora." it's formal. If you say "Adiós, amigo." it's informal.
in croatian formal is said: svečano. svechano (pronounced)
When incidents are multi-jurisdictional or involve multiple agencies
on the commad promt type RUN followed by the file name,then press enter.
It depends on how formal you wish to be. Sayounara is formal, but you could say Ja ne or just bye bye.
It uses formal language and structure not colloquialism and slang.
it is not unusual to say "in fact," in a formal lettter
You just say: "This is a formal event".
to say = decir I say = digo you say = dices (single informal) you say//he/she says = dice (single formal 'you') we say = decimos you say = diceis (plural informal) you say/they say = dicen (plural formal 'you')
depends how you say it, what context. sounds formal enough
Como estás? (not formal way) Como está? (formal way)
Vous