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Гулима1
@Гулима1
August 2022
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Вычисли сумму первых десяти членов арифметической прогрессии заданной формулой : аn=1,2n-3
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IrkaShevko
Verified answer
A1 = 1,2 - 3 = -1,8
a10 = 12 - 3 = 9
S10 = 10(a1+a10)/2 = 5(9-1,8) = 5*7,2 = 36
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Answers & Comments
Verified answer
A1 = 1,2 - 3 = -1,8a10 = 12 - 3 = 9
S10 = 10(a1+a10)/2 = 5(9-1,8) = 5*7,2 = 36