При каких значениях букв выражение не имеет смысла. 1)а+8 : 3а 2)а+b : a-b 3) a : a+9 4) a : - Дата: 07.11.2019, Автор: francishy2w - №16276561

При каких значениях букв выражение не имеет смысла.

1)а+8 : 3а

2)а+b : a-b

3) a : a+9

4) a : |b|-7
- Предмет:
  Математика
- Автор:
  francishy2w
- 5 лет назад

Ответы 1

выражение не имеет смысла 1)если а =02)если а=в3)если а=-94)если а =7,а=-7
- Автор:
  ticklesq7dz
- 5 лет назад
- 0
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What is a computer?
21
The term computer is used to describe a device made up of a combination of electronic and electromechanical (part electronic and part mechanical) components. Computer has no intelligence by itself and is referred to as hardware. A computer system is a combination of five elements: • Hardware • Software • People • Procedures • Data/information When one computer system is set up to communicate with another computer system, connectivity becomes the sixth system element. In other words, the manner in which the various individual systems are connected — for example, by phone lines, microwave transmission, or satellite - is an element of the total computer system. Software is the term used to describe the instructions that tell the hardware how to perform a task. Without software instructions, the hardware doesn't know what to do. People, however, are the most important component of the computer system: they create the computer software instructions and respond to the procedures that those instructions present. The basic job of computer is processing information. Computers accept information in the form of instruction called a programmed and characters called data to perform mathematical and logical operations, and then give the results. The data is raw material while information is organized, processed, refined and useful for decision making. Computer is used to convert data into information. Answer the questions:
1) What does the term «computer» describe?
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4) What is software? What's the difference between hardware and software?
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