Решите систему уравнений. x+3y=2. 2x+3y=7 срочно пожалуйста и еще сократите дробь

Решите систему уравнений. x+3y=2. 2x+3y=7 срочно пожалуйста и еще сократите дробь t²–t/4–4t
- Предмет:
  Алгебра
- Автор:
  garrett718
- 5 лет назад

Ответы 3

Я так и думал что в дроб. Надо общий множитель вынести
- Автор:
  twiggy94wx
- 5 лет назад
- 0
Решение во вложении.
- Автор:
  pebbles9i94
- 5 лет назад
- 0
{x+3y=2{2x+3y=72x+3y-x-3y=7-2x=5x+3y=25+3y=23y=2-53y=-3|:3y=-1Ответ: х=5; у=1 t²–t/4–4t=t(t-1)/4(1-t)=-t(1-t)/4(1-t)=-t/4=-0,25t
- Автор:
  tarakbjh
- 5 лет назад
- 0
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Составьте пожалуйста 3 вопроса к тексту:
Dan had sweet memories of his childhood years, especially Christmas. In those days, he had lived in Wales, in a small town. He remembered the white snow in the garden and a cold moon in the sky at night. December was always cold and frosty. Dan spent lots of time outdoors because he liked playing in the snow. While Dan was growing up, each Christmas was much like the last: Christmas tree, Christmas wishes, Christmas presents under the tree, Christmas dinner with relatives. But one of his Christmases he would remember forever. It was many years ago, and he was 6 or 7 years old. It was the afternoon of Christmas Eve. Dan was playing in Mrs. Prothero’s garden with her son Jim. Dan was afraid of Mrs. Prothero because she always looked strict and harsh. She never invited him to the house. But her son Jim was different. The boys were playing cat hunters: they made lots of snowballs and prepared to attack the cats. Dan and Jim felt cold waiting for the cats to come over the garden wall. But none of them had appeared yet. Suddenly the boys heard a loud cry from the house. At first they thought it was Mrs. Prothero’s white cat, that was their main enemy. Soon the cry repeated and grew louder. Now the boys understood that it was Mrs. Prothero herself, and she was shouting ’Fire!’ The boys ran down towards the house. The door was wide open with grey smoke coming from inside. Something was burning. Mrs. Prothero desperately called for help and for Mr. Prothero, who was obviously sleeping in another room. He always slept after lunch with a newspaper over his face. Finally, Mr. Prothero appeared in the clouds of smoke in the doorway. “What a fine Christmas!” he said waving his hand like an orchestra conductor. Mrs. Prothero asked him to call the fire brigade but he doubted that they would be available because of the holiday. But he sent the boys to the telephone box. Dan and Jim rushed out of the house. The adventure seemed to be better than cat hunting. Jim suggested also calling the police and the ambulance. But they called only the fire brigade. The fire truck and three tall men in helmets arrived just as the boys returned to Mrs. Prothero’s house. It was the noisiest and most unusual Christmas Eve they had ever had. The firemen started the pump and the water ran into the house. When it was all over, Mr. and Mrs. Prothero were standing in their wet and smoky room with a grey Christmas tree in the middle. The room looked a complete mess. Mrs. Prothero opened the oven and took out a burnt cake. She was in tears – it had been a horrible Christmas. Just as the firemen were going to leave, Jim’s aunt, Miss Prothero, came back home. She looked surprised at the crowd of neighbours but did not give way to panic. She opened a colourful
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Составьте пожалуйста 3 вопроса к тексту:
Every year, millions of visitors come to the Tower of London to see the Crown Jewels*. The Crown Jewels have been kept at the Tower since 1303 after they were stolen from Westminster Abbey. Luckily, that time most of the Crown Jewels were found shortly afterwards and put in the Tower. Although there have been a few attempts to steal the Crown Jewels from the Tower, none of them have succeeded. But the name of one of the thieves has remained in the British history. He was Thomas Blood. On the 9th May, 1660, Thomas Blood, dressed as a priest, came to the Tower. He came with three well-dressed young men. Thomas Blood had already been to the Tower a few days earlier. He was with a woman whom he introduced as his ‘wife’. When they were walking round the Tower, the ‘wife’ pretended to feel unwell and fainted. Talbert Edwards, who was Master of the Jewel House and lived in the Jewel House with his family, took the woman upstairs to his family’s rooms. He also asked his wife to help the fainted lady. In an hour or so the lady felt better and left the Tower with her ‘husband’. On the second visit, Thomas Blood, again dressed as a priest, brought a present for Edwards' wife for her help and attention to his ‘wife’. He gained the confidence of the Master of the Jewel House, Talbot Edwards, and asked him to show the Crown Jewels to his friends. Talbot Edwards agreed and took them to the room where the Crown Jewels were kept. Suddenly Blood took out a hammer from under his priest’s dress and struck the Master on the head. Talbert Edwards fell down and fainted. Thomas Blood took the king's crown and made it flat with the hammer in order to put the crown into a large pocket of his priest dress. The other three men took other royal jewels and hid them in their pockets. By chance, Talbert Edwards’ son, Wythe, arrived at the Tower earlier than expected. He found his father lying unconscious and bleeding. Wythe raised the alarm. Though Thomas Blood and his gang had left the jewel room, they were caught when they were getting out of the Tower. The broken crown and the jewels were found with them. A report was immediately sent to the king, and Charles II sent for Thomas Blood. The king wanted to talk to the thief who had done such a wicked crime. The end of the story is unbelievable. Thomas Blood was not punished. Moreover, Blood was awarded a pension of £500 a year. At the same time the Master of the Jewel House Talbot Edwards was dismissed for his carelessness. Later, he died in misery. Since Thomas Blood's attempt in 1600 up to the present date, there have been no attempts to steal the jewels. Nowadays the priceless collection is open for the public to view and the Crown Jewels are considered to be the most well-guarded treasures in the world. They are kept at the Tower and are guarded by the Yeomen Warders, commonly known as the Beefeaters.
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Решите систему уравнений. x+3y=2. 2x+3y=7 срочно пожалуйста и еще сократите дробь t²–t/4–4t

Ответы 3

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