Предмет: Математика, автор: хорошист687

номер 6 .........................

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Автор ответа: miron2077
1
2,8*6=16,8 сумма шести чисел
1,3*4=5,2 сумма четырех чисел
16,8+5,2=22 сумма десяти чисел
22:10=2,2 среднее арифметическое десяти чисел
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