Предмет: Математика, автор: nyra30

найдите среднее арифметическое чисел 2 и 5 , 7 и 1/2

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Автор ответа: prettypushkova

Среднее арифметическое чисел - это сумма всех чисел, делённая на их количество.

(2 + 5) : 2 = 7 : 2 = 3,5 - среднее арифметическое двух чисел;

(7 + 1/2) : 2 = (7 + 0,5) : 2 = 7,5 : 2 = 3,75 - среднее арифметическое двух чисел;

(2 + 5 + 7 + 0,5) : 4 = 14,5 : 4 = 3,625 - среднее арифметическое четырёх чисел.

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найдите среднее арифметическое чисел 2 и 5 , 7 и 1/2​

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найдите среднее арифметическое чисел 2 и 5 , 7 и 1/2