Предмет: Математика, автор: Karolina23568

Помогите пожалуйста нужно срочно Поезд один час ехал со скоростью 56км/ч а второй час со скоростью 69км/ч Найдите среднюю скорость с которой ехал поезд

Ответы

Автор ответа: ellinasmit

Формула по которой находится среднее число(среднее арифметическое):
a ср.арифм=(a1+ a2+ …+ an):n
Подставляем числа под эту формулу:
(56+69):2=125:2= 62 и 1/2 км/ч
Ответ: средняя скорость с которой ехал поезд равна 62 и 1/2 км/ч.

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