Как решить? Подскажите. Created by honeybeyker. algebra-ru

Как решить? Подскажите...

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1) a10 = а1 + 9d = -2,4 |Формула: An = A1 + D (n-1)
2) a25 = a1 + 24d = -0,9 |Формула: An = A1 + D (n-1)
3) 24d - 9d = -0,9 + 2,4
15d = 1,5
d = 1,5/15 = 0,1
Ответ: 0,1

1 votes Thanks 1

Pacanka202 А1+24d=-0,9
a1+9d=-2,4
15d=1,5
d=0,1

0 votes Thanks 1

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