Предмет: Алгебра, автор: Семьон

решите систему уравнений x-y+xy=-11    x-y-xy=1

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Автор ответа: Demigod1Diana
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769. This is … address book.
a) a; b) an; c) the; d)
770. Open your … exercise-books.
a) a; b) an; c) the; d)
771. Steve is … actor in the theatre.
a) a; b) an; c) the; d) 772. She plays … violin.
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a) a; b) an; c) the; d)
775. Last night I went to … Indian restaurant.
a) a; b) an; c) the; d)
776. I had … nice meal there.
a) a; b) an; c) the; d)
777. larrive at airport just on time.
a) a; b) an; c) the; d)
778. Have you been to … Acropolis?
a) a; b) an; c) the; d)
779. … Kremlin is the heart of Moscow.
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a) a; b) an; c) the; d)
781. … London stands on … Thames.
a) A; b) An; c) The; d)
782. … lake Baikal is the largest lake in the world.
a) A; b) An; c) The; d)
783. Who is … President of the United States?
a) a; b) an; c) the; d)
784. He is … most intelligent student in the college.
a) a; b) an; c) the; d) -
785. He went to … bed at 10 p.m.
a) a; b) an; c) the; d)
786. Dickens' father was sent to … prison for debts.
a) a; b) an; c) the; d)
787. She goes to … school.
a) a; b) an; c) the; d)
788. … Everest is the highest mountain.
a) A; b) An; c) The; d)
789. Where is … Mississippi river?
a) a; b) an; c) the; d)
790. Do you want to go to … theatre with us?
a) a; b) an; c) the; d)
791. What is … capital of Italy?
a) a; b) an; c) the; d)
792. Is Paris in … United Kingdom?
a) a; b) an; c) the; d)
793. He has got … camera.
a) a; b) an; c) the; d)
794. We go to … beach in summer.
a) a; b) an; c) the; d)
795. Christopher Columbus crossed … Atlantic Ocean.
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a) a; b) an; c) the; d)
797. My father isn't at … home.
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798. Paula comes from … Canada.
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800. This is … old pair of trousers.
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801. He lives in … Colorado.
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