It means: "I have complete confidence in you , and in your abilities".
Biannual Bi meaning 2 and annual meaning yearly
Do you mean bi-monthly? In which case, this would be referring to something that happens twice a month, usually once every two weeks.
Twice in Math would mean the same as it would anywhere elses. It would mean to do something two times.
"Bi-yearly" typically means occurring twice a year or every two years.
yes
Bi-weekly is ambiguous, and can either mean twice a week, or once every two weeks.
Biannual means every two years. Semiannual means twice a year.
Bi-monthly means every two months. (Semi-monthly means twice a month). There may be cases where these terms are misused, so be careful.
No, biweekly is not hyphenated. It is worth mentioning that this term can be ambiguous: some people will think it means every two weeks, and others will think it means twice a week. You might want to consider using a term that is clearer: for example you can say "twice weekly" or "semiweekly" to mean twice a week, and "every other week" to mean "every two weeks".
no. saying i eat fish on Sunday could mean you just ate it once that Sunday. saying i eat fish on Sundays mean you eat fish on all Sundays
The acronym "SHEX" can mean "Sundays and Holidays EXcepted."
bicentennial means when something happens twice in a year, or once every two years