Предмет: Математика, автор: kl29041982

Із пунктІв А І Б,відстань між якими 18км назустріч один одному вирушили два пішоходи.Чи відбулася зустріч, якщо перший пройшов 5/8 цієї відстані,а другий 3/10.На якій відстанв один від одного вони перебувають

Ответы

Автор ответа: 25hjoerf10

18 : 8 · 5 = 11,25 (км) – прошёл первый пешеход.
18 : 10 · 3 = 5,4 (км) – прошёл второй пешеход.
11,25 + 5,4 = 16,65 (км) – прошли пешеходы вместе.
16,65 км < 18 км ; => что встреча не состоялась.
18 – 16,65 = 1,35 (км) – расстояние между пешеходами.
Ответ: встреча пешеходов не состоялась и они находятся на расстоянии 1,35 км друг от друга.

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a) could have not gone c) didn't go
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c) must be
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8 Your room is very well ventilated. So you ___ hot yesterday
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10. You ___ us last night. It wasn't necessary
a) must not visit c ) needn't have visited
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