Предмет: Математика, автор: 12345678903331


одночасно в одному напрямі з двох залізничних
відстань між якими 84 км. Через 1,5 год відстань між поїздами
скоротилася до 58,8 км. Знайти швидкості поїздів, якщо відомо, що
швидкість одного з них становить 79% швидкості іншого.​

Ответы

Автор ответа: Helpmepleassss
1

Ответ:

1) 72,5-52,8=19,7 (км) на столько увеличилось расстояние между поездами за 1,75 часов

2) 19,7:1,75=394/35 (км/ч) скорость удаления поездов

3) если скорость пассажирского х км/ч, а скорость товарного 0,84х км/ч, то уравнение:

х-0,84х=394/35

х=394/35:016=492,5/7=985/14=70 5/14 (км/ч) скорость пассажирского.

0,84*985/14=59,1 (км/ч) скорость товарного

Пошаговое объяснение:

Автор ответа: lanusicsolod
0

Ответ:

Пошаговое объяснение:

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Предмет: Математика, автор: Vika24567