Question

Таймер часах поставили так что он подаёт один сигнал через каждые полчаса в первый раз таймер подал в 17:30 во сколько просигналит в 9 раз

Answer 1

18.00-2 раз
18.30-3 раз
19.00-4 раз
19.30-5 раз
20.00-6 раз
20.30-7 раз
21.00-8 раз
21.30- 9 раз
ответ: просигналит таймер в 9 раз в 21.30

Answer 2

Setting the Timer

To answer your question, let's calculate the time when the timer will sound for the 9th time.

The timer was set to sound once every half hour, starting from 17:30.

Calculating the Time

To find out when the timer will sound for the 9th time, we need to add 30 minutes to the previous time for each subsequent signal.

Starting from 17:30, let's calculate the time for each signal:

1. 17:30 + 30 minutes = 18:00 2. 18:00 + 30 minutes = 18:30 3. 18:30 + 30 minutes = 19:00 4. 19:00 + 30 minutes = 19:30 5. 19:30 + 30 minutes = 20:00 6. 20:00 + 30 minutes = 20:30 7. 20:30 + 30 minutes = 21:00 8. 21:00 + 30 minutes = 21:30 9. 21:30 + 30 minutes = 22:00

Therefore, the timer will sound for the 9th time at 22:00.

Please note that the calculations assume that the timer will continue to sound every half hour without any interruptions or changes.