Найти первый член и разность арифметической прогресси у которой : a1=7; a16=67; Найти : d - №15236775

Найти первый член и разность арифметической прогресси у которой :

a1=7;
a16=67;

Найти : d
- Предмет:
  Алгебра
- Автор:
  frankbanks
- 6 лет назад

Ответы 1

a16=a1*(n-1)*d67=7*15d67-7=15dd=4P.S Очень кратко расписал. Прости.
- Автор:
  edwinherrera
- 6 лет назад
- 0
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