Ответ: -824.4
Объяснение:
Sn = (2a1 + d(n-1))/2 x n
S24 = (2*-42+0.6(24-1))/2 x 24 = -824.4
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Ответ: -824.4
Объяснение:
Sn = (2a1 + d(n-1))/2 x n
S24 = (2*-42+0.6(24-1))/2 x 24 = -824.4