Предмет: Математика, автор: Ждун2017

Найдите среднее арифметическое чисел 3,8; 4,2; 3 и 1,4

Ответы

Автор ответа: eelog
1
все складываешь и делишь на общее количество

 вот ответ: 3.1
Автор ответа: hronotom
5
(3.8 + 4.2 + 3 + 1.4) : 4 = 3,1

Суммируешь все числа и делишь на количества этих самых чисел.
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