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Flura [38]
2 years ago
7

Том и Эми установили будильники на своих телефонах на 6:45. Оба сигнала тревоги звучат одновременно в 6.45. Будильник Тома звучи

т каждые 9 минут. Будильник Эми звучит каждые 12 минут. В какое время оба будильника в следующий раз сработают вместе?
ПОМОГИТЕ ПОЖАЛУЙСТА​
Mathematics
1 answer:
Debora [2.8K]2 years ago
8 0

Answer:

36 минут спустя в 7:21

это проблема LCM, поэтому вот как ее решить.

Том звучит через 9, 18, 27, 36 минут после первоначального звучания.

Звуки Эми в 12, 24, 36 минут

Итак, в 7:21, через 36 минут после того, как они ушли, и Том, и Эми проснулись, и они оба опоздали.

-------------------

Translation

36 minutes later at 7:21am

this is a LCM problem so this how to solve it.

Toms sounds at 9, 18, 27, 36 minutes after it initially sounds

Amy’s sounds at 12, 24, 36 minutes

so at 721am 36 minutes after they went off both Tom and Amy when they woken up,they were both late.

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Cos (13pi/8) = cos(3pi/2 + pi/8)

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