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danilvetrov47p083sl
danilvetrov47p083sl
15.12.2021 06:09 •  Математика

Нереально! кто решит тот нереально умный. в олимпиаде по учавствовали 100 человек, в олимпиаде по 50 человек, а в олимпиаде по информатике 48 человек, когда учеников опросили в скольких олимпиадах они учавствовали (ответ был в 2 олимпиадах), в 2 олимпиадах человек меньше чем в одной в два раза, а в трёх олимпиадах вдвое меньше чем в одной. сколько человек учавствовали в этих олимпиадах(сколько 1 раз учавствовали, два раза и 3 раза).

👇
Ответ:
vtrnnst
vtrnnst
15.12.2021
В 1-й = Х
в 2-х = Х/2
в 3-х = Х/3
Решение:
Х+Х/2+Х/3=100 +50+48
Х+Х/2+Х/3=198
Приводим к общему знаменателю:
6х+3х+2х=198
11х=1188
Х=108
Х/2=54
Х/3=36
4,4(83 оценок)
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Ответ:
astasevbogdanp08dn2
astasevbogdanp08dn2
15.12.2021

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4,7(20 оценок)
Ответ:
koshka99
koshka99
15.12.2021
  на территориях бывшего  восточно-тюркского каганата  появился третий уйгурский каганат. в  840 году  это государство было уничтожено после двадцатилетней войны  енисейскими кыргызами. под натиском кыргызов  уйгуры  откочевали на юг в восточный туркестан. очаги их государственности продолжали существовать на западе  ганьсу  и в  турфанском  оазисе. государство каракитаев формирование каракитаев тесно свя­зано с центральноазиатскими племенами киданей. кидани (ци-дань, кита, хита) упоминаются в письменных источниках с iv в. н. э. как монголоязычные племена. они обитали к северу от китая, на территории маньчжурии и уссурийского края. в 924 г. обширная территория от алтая до тихого океана перешла под эгиду кидань-ского государства (империю ляо). источник:   © e-history.kz
4,6(78 оценок)
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