Those are correct.
ArcticPaul:
Jednego Dużego Żubra?
right on spot
ArcticPaul:
Because the particular adjective is being used as a noun?
No, it simply is a noun :)
you have a verb (uczyć - to teach) from which you can create an adjective (technically it's participle, not adjective) "uczony" (taught), you can still use this form as a normal adjective, but it also became a noun (= a wise man, scientist). Still, being a noun it keeps the declension pattern of an adjective.
ArcticPaul:
Sędzia (male, a judge) has a mixed declension.Example, please?I'm unsure what you mean.
I meant some of the forms follow the pattern of male nouns ending in -a (so female declension pattern, for exapmle Narzędnik - Instrumental), but most forms follow adjective declension pattern.
Mian. sędzia
Dop. -dziego (-dzi),
Cel. -dziemu (-dzi),
Bier. -dziego (-dzię),
Narz. -dzią,
Miejsc. -dzi (-dzim)
Woł. -dzio;
Plural (regular declension)
Mian. -dziowie,
Dop./Bier. -dziów
Cel. -dziom
Narz. -dziami
Miejsc. -dziach