Let’s learn about "결정하다"

결정됐어요 : It’s settled

[other expressions]

- 결정됐다. (to younger people or friends)

- 결정됐네. (to younger people or friends)

- 결정됐어. (to younger people or friends)

- 결정됐어요. (honourific by ‘-요’)

- 결정됐네요. (honourific by ‘-요’)

- 결정됐습니다. (formal; more honourific by ‘-스’)

[explanations]

* 결정하다 : determine; settle

* 결정했다 : past tense of 결정하다 by ‘-었-‘

* 결정되다 : be determined; be settled

* 결정됐다 : past tense of 결정되다 by ‘-었-‘

* 결정됐습니다 : 결정됐(the stem of 결정됐다) + -스(a suffix makes a verb more honourific) + -ㅂ니다

* a verb + -어 / -네 / - 다 : a non-honourific descriptive verb ending suffix

* a verb + -어 / -네 + -요 : honourific verb ending suffix

* a verb + -습니다 : an honourific descriptive verb ending suffix