Предмет: Алгебра, автор: saidakadirjanova

Привет помогите пж как найти a1 если d=4 a13=34

Ответы

Автор ответа: muhambek2004
2

Ответ:

a₁ = -14

Объяснение:

a₁₃ = 34;  d = 4

а₁₃ = а₁ + 12d

34 = a₁ + 12 * 4

34 = a₁ + 48

34 - 48 = a₁

-14 = a₁

a₁ = -14

Автор ответа: abcd12344w46578
2

Ответ:

-14

Объяснение:

a13 = a1+12d

34 - 48 = a1

a1 = -14

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