Тема:Сумма и разность многочленов . Произведение одночлена на многочлен С Решением - Дата: 19.01.2020, Автор: andrésxu92 - №27685221

Тема:Сумма и разность многочленов . Произведение одночлена на многочлен

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- Предмет:
  Алгебра
- Автор:
  andrésxu92
- 5 лет назад

Ответы 1

Раскрываем скобки: $4x + 4 = 15x - 14x - 35 \\ 4x - 15x + 14x = - 35 - 4 \\ 3x = - 39 \\ x = - \frac{39}{3} \\ x = - 13$
- Автор:
  clark58
- 5 лет назад
- 0
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Before there were automobiles

Long ago most people had to walk wherever they wanted to go on land. Later, when large animals began to be domesticated, some people rode camels, horses, donkeys, oxen, and even elephants.

Then came the discovery of wheels. The people of Mesopotamia (now in Iraq) built wheeled carts nearly 5,000 years ago. But so far the earliest cart that has actually been found is one made later than those in Mesopotamia, by people in ancient Rome. It was simply a flat board. At first, people themselves pulled carts. Later, they trained animals to do this.

As people used more and more carts, they had to make roads on which the carts could travel easily. In Europe and North America carts developed into great covered wagons and then into stagecoaches. Pulled by four or six fast horses, stagecoaches first bounced and rolled along the roads in the mid-1600s. They became important public transportation during the 19th century.

It wasn’t until the steam engine was invented that a better means of transportation developed—and that was the train. Steam locomotives used steam pressure from boiling water to turn their wheels.

The first passenger train service began in England in 1825. Soon trains were rushing hundreds of thousands people wherever iron tracks had been laid.

The first automobiles were not built until the late 1890s. Some of the earliest were made in the United States and England, though they were slow and broke down a lot. They looked much like carts with fancy wheels. What most of us recognise as a car wouldn’t come along for several more years.

Определи фактические ошибки в утверждениях, найди и напиши неверное слово и правильный ответ (одно слово).
Example: Long ago people flew everywhere they wanted to go. __flow(неправильно) /__walk__ (правильно)

1. People started using large animals to ride after they caught them. __/__

2. The earliest wheeled cart was built in Rome. __/__

3. The carts were watched by trained animals. __/__

4. Wagons and stagecoaches became useless means of transportation during the 19th century. __/__

5. Steam locomotives invented steam pressure to turn their wheels. __/__

6. Trains can only move on iron chains. __/__

7. First automobiles were fast and looked like carts. __/__
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