Предмет: Алгебра, автор: muradmanuchev

Решите пожалуйста 1 задание 1 вариант дам 30 балов

Приложения:

Ответы

Автор ответа: AnonimusPro
0
выражаем у: у=3-x; подставляем во 2: x^2-6+2x-2=0; x^2+2x-8=0; D=36; x1=2; x2=-4; y1=3-2=1; y=3+4=7; Ответ: (2;1) и (-4;7)
Предыдущий вопрос
Следующий вопрос
Похожие вопросы
Предмет: Английский язык, автор: Draywer
Сделай эти утвердительные предложения отрицательными(-) или вопросительными (?) и напиши их. 1. Sam invited his friends to his house. (-) 2. Peter joined his parents in London. (?) 3. The hotel was comfortable. (?) 4. The days were rainy. (-) 5. The children showed you the pictures. (?)
7 лет назад
Предмет: Русский язык, автор: musabalanova82
Помагитеееееее дам 50 баллов и самый лучший ответь
7 лет назад
Предмет: Английский язык, автор: u7t8ba4n5t
ПОМОГИТЕ ПОЖАЛУЙСТА. 1. The monitor is blank! Oh
my goodness! The computer just _____________!
Варианты ответа:
crashed
stopped
broke
2. When you work on a computer, you need to __________ your work every five minutes in case something happens and you lose everything.
Варианты ответа:
write
keep
save
3. This is a switch off __________.
Варианты ответа:
box
stand
button
4. I really want to buy it! It's ________ small, round watch.
Варианты ответа:
nice
wooden
green
5. I'm not going to pay 300 euros for an ugly __________ French chair. Варианты ответа:
remote
old
vacuum
6. The _____________ is perfect for people who don't have time to cook.
Варианты ответа:
grill
toaster
microwave
7. The most expensive cars _________ in Germany.
Варианты ответа:
had made
are made
was made
8. This house ___________ built in the 1940s and it is still beautiful.
Варианты ответа:
is
were
was
9. The sauce ___________ with white wine and chicken.
Варианты ответа:
had made
were made
is made
10. _________ was the vacuum cleaner invented by?
Варианты ответа:
Whose
Whom
Who
11. The letters ________ posted yesterday.
Варианты ответа:
did
were
had
12. This novel is beautifully ___________. The minute you start reading it, you can't stop.
Варианты ответа:
written
writing
write
13. You need a new ___________. This screen is awful!
Варианты ответа:
monitor
scanner
keyboard
14. I want to ___________ the whole file but I have run out of ink. Is there another cartridge?
Варианты ответа:
print
write
save
15. The ___________ is the main part of a computer.
Варианты ответа:
tower
box
house
16. The screen is blank because you didn't switch the computer _________.
Варианты ответа:
up
off
on
17. She is in Paris, __________?
Варианты ответа:
won't she
isn't she
doesn't she
18. The computer is still broken, _______?
Варианты ответа:
isn't it
won't it
wasn't it
19. You really need to shave! Don't you have money to buy a ____________?
Варианты ответа:
razor
knife
Walkman
20. We never call each other; we _________ online.
Варианты ответа:
talk
speak
chat
7 лет назад
Предмет: Математика, автор: aselomarova330
могут ли прямые b и c быть перпендикулярными , если a перпендикулярно b, и если (а,с)=60°?
обоснуйте ответ
10 лет назад
Предмет: Обществознание, автор: богдашка2001
на какой стадии конфликт разрешить легче всего
10 лет назад