Предмет: Алгебра, автор: sydarAndAligor

HELP MEE!!!! c системой {2x+y=1
                                                5x+2y=0

Ответы

Автор ответа: rubilovalex
1
y=1-2x; подставляем во второе уравнение системы: 5x+2*(1-2x)=0; 5x+2-4x=0; x+2=0; x= -2. y=1-2*(-2)=1+4=5. Ответ: (-2:5). 
Предыдущий вопрос
Следующий вопрос
Похожие вопросы
Предмет: География, автор: novohatskaat5
характеристика однієї з річок Північної Америки . СРОЧНО ​
1 год назад
Предмет: Английский язык, автор: lavnikovychanna1
1.)Answer the questions. a) What was there behind the glass panel of the NUT ROOM? b) Why did Mr Wonka use squirrels but not Oompa-Loompas to get nuts out of walnut shells? c.)What did Veruca Salt ask her mother to get? What pets did Veruca already have at home? e.)What happened when Veruca Salt reached out her hand to grab one of the squirrels? f) Why did Mr Wonka say that Veruca Salt was a bad nut? g) Where did she go? h) Why was Mrs Salt so worried and Mr Salt extremely cross? i) Who pushed Mrs Salt into the hole in the floor of the Nut Room? j) Did the squirrels push Mr Salt into this hole too? 2. Put the sentences in the right order. And then say what hap- pened to Veruca Salt. a) Veruca Salt decided she wanted a squirrel. b) On the table, there were mounds of walnuts, and the squir rels were all working away like mad, shelling the walnuts at a great speed. c) It was an amazing sight! d) If the nut was bad, they didn't open it and just threw it down the rubbish chute. e) THE NUT ROOM, it said on the next door they came to. f) And the one remaining squirrel (obviously the leader of all) climbed up on to her shoulder and started tap-tap-tapping the girl's head with its knuckles. g) Veruca Salt entered the NUT ROOM, her gaze fell upon a pretty little squirrel sitting nearest to her at the end of the table. h) That particular chute ran directly into the great big main rubbish pipe, which carried away all the rubbish from every part of the factory. i) Then all at once the squirrels pulled Veruca to the ground and started carrying her across the floor to the rubbish chute. j.)Veruca Salt reached out her hands to grab the squirrel... and every single squirrel around the table took a flying leap towards her and landed on her body. 3.Circle the odd word out. a) disturb, wallet, train, kneel b) squirrel, rabbit, parakeet, chute c) pretty, amazing, specially, particular d) nuts, cacao beans, fish, furnaces
4. Make a list of pets Veruca Salt had at home. Which of them would you like to have?
ПОЖАЛУЙСТА,БЫСТРЕЕ,И ПРАВИЛЬНО НАПИСАТЬ ОТВЕТЫ НА АНГЛИЙСКОМ,КТО ШАРИТ,НЕ МАЛО И НЕ МНОГО ТЕКСТА!!!! ​
1 год назад
Предмет: ОБЖ, автор: Sashaaaa46
Повідомлення про сучасних українських скульпторів.
1 год назад
Предмет: История, автор: levytcraft63
Специальное сооружение для гладиаторских игр - это:
1. амфитеатр;
2. стадион;
3. ипподром.
7 лет назад
Предмет: Математика, автор: ekblog8
10⋅(5a−8)−5⋅(10a+8)=−120
решите плиз
7 лет назад