Вопрос школьника по предмету Математика
Автомобіль їхав 3,6 год зі швидкістю 95 км/год і 1,4 год — зі швидкістю 50 км/год. Знайти середню швидкість руху автомобіля на всьому
Ответ учителя по предмету Математика
Ответ:84 км/год
Пошаговое объяснение:
S1=3,6*95=342км. S2=1,4*50=78км,весь шлях буде:428км,весь час буде:3.6+1.4=5.0год,тепер знайдемо ср.швидкість:428/5=84км/год
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