Предмет: Геометрия, автор: Аноним

с рисунком пожалуйста​

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Автор ответа: Аноним
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Решение смотрите во вложении

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РЕБЯТ ПОМОГИТЕ!!ТОЛЬКО НЕ НАДО ОНЛАЙН ПЕРЕВОДЧИКА!!!Telegraphy.

Electricity completely changed communications. Once it was discovered
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used for messages. As long as two places were connected by a wire
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of advantages and by the end of the 19th century cables were laid
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Samuel Morse, one of the most famous people in communications, invented
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Later on the necessity aroused to increase the speed of sending
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Then a machine was invented to send typewriter messages over a telegraph
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make one letter or figure.

As most modern systems use alternating current, one line can be used to
send many messages at the same time. It is possible if each message is sent out
at a different frequency. This allows high-speed telegraph communication as
well as transmission of written messages.
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