This is the 5880th most frequent Polish word.
zdecydowały
"Zdecydowały" means "they decided" in English.
Here, "zdecydowały" illustrates the subject completing the action of deciding a course of action.
One są bardzo stanowcze i zdecydowały, że nie pojadą na wycieczkę.
They are very determined, and they decided not to go on the trip.
"Zdecydowały" is used to indicate a collective decision by all the female students.
Te uczennice wspólnie zdecydowały o temacie projektu klasowego.
These female students jointly decided on the topic of the class project.
This example shows "zdecydowały" referring to a choice made after deliberation.