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Оля030905
Оля030905
16.06.2022 10:45 •  Математика

Из поселка в город расстояние между которыми 126 км выехал велосепедист со скоростью 18 км/ч через 4 часа в том же направлении выехал автобус который прибыл в город одновремено с велосепедистом. с какой скоростью ехал автобус (по действиям) 1) 2)

👇
Ответ:
VasyaPupkin001
VasyaPupkin001
16.06.2022
1) 126/18=8 (ч)
2) 8-4=4
3) 126/4=31,5 км/ч
ответ: со скоростью 31 км/ч ехал автобус.
4,5(97 оценок)
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Ответ:
анна2255
анна2255
16.06.2022

Смотрите.

1) Обозначаем t — сколько времени они шли в первый день, тогда (t-1) — сколько во второй.

2) Теперь следующее соотношение — про 6 километров. Пускай в первый день они км, а во второй день — s2, тогда нам дано:

s1-s2=6.

3) Вспоминая, что расстояние=время*скорость (s=v*t), подставляем в эту формулу вместо s1 и s2:

(3,5*t)-(3*(t-1))=6.

Упрощаем:

3,5t-3t+3=6;

0,5t=3;

t=6.

ответ: Таким образом, в первый день они шли 6 часов. Во второй день — 6-1=5 (часов во второй день — 3*5 = 15 (км)

Пошаговое объяснение:

4,7(15 оценок)
Ответ:
ROMMIT2
ROMMIT2
16.06.2022

Пошаговое объяснение:

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4,4(68 оценок)
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