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Решите задачу по действиям
Для украшения ёлки ученики сделали хлопушки, фонарики и снежинки- всего 138. Фонариков оказалось на 3 раза больше, а снежинок- оказалось в 3 раза больше чем хлопушек.
Сколько было сделано хлопушек?-
Предмет:
Математика -
Автор:
ericzm7y - 5 лет назад
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Ответы 1
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пусть количество хлопушек - х, тогда фонариков будет - х+3, а снежинок - 3х. Всего украшений 138.1) х+3х+(х+3)=138 5х+3=138 5х=138-3 5х=135 х=135:5 х=27 шт. - хлопушекОтвет: сделали 27 хлопушек.
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Автор:
drew38 - 5 лет назад
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0
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Надо перевести срочно пожалуйста помогите!!!
THE RISE OF THE PERSONAL COMPUTER
The first personal computer, the Altair, was announced in Popular Electronics
in its January 1975 issue. The Altair was also the first example of new computer
hardware. It caused a sensation in the computer industry: those who wanted could
have their own computers to play with at home, and a mighty computer industry soon began to grow.
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Emboldened by their success with Altair, Gates and his friend founded Microsoft
Corporation, which has become the world's largest personal computer software
company.
In 1976 Steve Jobs and Stephen Wozniak began assembling their own
microcomputer - the Apple. The second iteration of their design, the Apple II,
included such amenities as a keyboard*, a built-in power supply**, and a color
monitor (all lacking in the first version) and was an immediate success following its introduction in 1977.
With the inclusion of a floppy disk drive that stored computer-readable data on
a flexible plastic disc, the Apple II added a convenient way to read computer
programs. This development truly gave birth to the phenomenon of personal
computing.
In 1979 a remarkable program called VisiCalc appeared and made it possible
for the personal computer to manipulate complex arrays of data. VisiCalc not only
racked up impressive sales as a computer software package but also spurred adoption of the Apple II itself.
IBM made its entry in l981 with its Personal Computer (PC) which was
tremendously successful, soon outstripping sales of Apple and other early personal
computers. However, revenues from IBM's traditional computer business soon began a long-term decline. IBM was unable to dominate personal computers as it had the mainframe market, since IBM had exclusive rights neither to the central processing chip that was the "brains" of the personal computer nor to the disk operating system (DOS) software that made the hardware perform its basic functions.
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software, were free to sell their products to all comers. Microsoft developed a full
line of software, such as word-processing and spreadsheet packages***, that rivaled IBM's own. Thus, it took only a matter of months to create "clones" of the IBM PC with technical specifications that matched the IBM machines and that would run all of the same software, at a much lower cost.
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