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Записи числа 42,21,28 в виде произведения двух однозначных чисел?
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Предмет:
Математика -
Автор:
jollyfuentes - 6 лет назад
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Ответы 4
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СПС
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Автор:
sassytdiu - 6 лет назад
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0
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Пожайлуста
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Автор:
kristopher - 6 лет назад
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0
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6•7=42; 3•7=21; 4•7=28
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Автор:
matthewcc0s - 6 лет назад
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0
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В виде произведения однозн.чисел:
42=6×7
21=7×3
28=4×7
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Автор:
emely - 6 лет назад
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0
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Jane's New Job
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If she has to do some calculations, Jane uses an electronic calculator, and there is a photocopier in the office for making copies of letters and other papers.
Jane normally sends letters by post, but if she wants to send a written message quickly she uses the telex. This is a machine like a typewriter: a message is typed, and then another telex machine somewhere else receives the message and types it out again some time later.
A fax machine is more popular now. It makes copies and sends it to any other fax machine you like. Messages can be written by hand or typed, and include drawings. A fax machine is connected or combined with a telephone, that's why it is also called telefax. The quickest way of sending photo messages is by E-mail (electronic mail).
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6. What is telefax?
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