Предмет: Математика, автор: zlatixghpon

помогите пожалуйста) (!ОБЯЗАТЕЛЬНО РАСПИСАТЬ!)​

Приложения:
zentaevaajperi163: Ответ:
zentaevaajperi163: Ответ:245

Ответы

Автор ответа: ReiderReiner
1

Ответ:

S = 98 см²

Пошаговое объяснение:

P = 2(a+b)

Нехай друга сторона дорівнює х, тоді формула має вигляд

42 = 2(7+х)

42÷2 = 7+х

21 = 7+х

х = 14 см

S = a×b

S = 7 × 14

S = 98 см²

ReiderReiner: подписав як міг, бо роблю все дуже скороченно
ReiderReiner: розписав*
zlatixghpon: боже дякую тобі свята людина,ти мене врятував, велике дякую)
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Текст
The United States of America is the fourth largest country in the world (after
Russia, Canada, and China). It occupies the southern part of North America and
stretches from the Pacific to the Atlantic Ocean. It also includes Alaska in the north
and Hawaii in the Pacific Ocean. The total area of the country is about nine and a
half million square kilometres. The USA borders on Canada in the north and on
Mexico in the south. It also has a seaboarder with Russia.
The USA is made up of 50 states and the District of Columbia where the
capital of the country, Washington, is situated. The population of the country is
about 250 million.
If we look at the map of the USA, we can see lowlands and mountains. The
highest mountains are the Rocky Mountains, the Cordillera, and the Sierra Nevada.
The highest peak is Mount McKinley, which is located in Alaska.
America's largest rivers are the Mississippi, the Missouri, the Rio Grande, and
the Columbia. The Great Lakes on the border with Canada are the largest and
deepest in the USA.
The climate of the country varies greatly. The coldest regions are in the north.
The climate of Alaska is arctic. The climate of the central part of the country is
continental. The south has subtropical climate. Hot winds blowing from the Gulf of
Mexico often bring typhoons. The climate along the Pacific coast is much warmer
than that of the Atlantic coast.
The USA is a highly developed industrial country. It is the leading producer
of copper and oil and the worlds second producer of iron ore and coal. On the
industrial enterprises of the country they produce aircrafts, cars, textiles, radio and
television sets, weapon, furniture, and paper.
Though mainly European and African in origin, the Americans are made up
from nearly all races and nations, including the Chinese and the native Americans
— Indians.
The largest cities are New York, Los Angeles, Chicago, Philadelphia, Detroit,
San Francisco, and others.
The United States is a federal republic consisting of 50 states, each of which
has its own government. The seat of the central (federal) government is Washington,
D. C. According to the Constitution of the USA, the powers of the government are
divided into 3 branches: the executive, headed by the President, the legislative,
exercised by the Congress, and the juridical. The Congress consists of the Senate
and the House of Representatives. There are two main political parties in the USA:
the Republican and the Democratic.
8 лет назад