Предмет: Математика, автор: frolovaarina2010

помогите пожалуйста дам сто балов

Побудуйте чотирикутник ABCD, якщо A(0;-5), B(-5;0),
C(0;5), D(5;0). На його сторонах позначте точку М, орди-
ната якої дорівнює 3 і яка лежить у I координатній чверті,
і точку N, абсциса якої дорівнює -2 і яка лежить у III коор-
динатній чверті. Запишіть координати точок М i N.

Ответы

Автор ответа: kotsomanazar
1

Відповідь:

Для побудови чотирикутника ABCD з вказаними координатами точок A(0;-5), B(-5;0), C(0;5), D(5;0), ми можемо позначити точку М на стороні AB і точку N на стороні CD.

Координати точки М можна обчислити, знаючи, що ордината (y-координата) М дорівнює 3, а точка М лежить у I координатній чверті, тобто її абсциса (x-координата) буде більшою за 0. Позначимо абсцису точки М як x_M:

М(x_M;3)

Координати точки N можна обчислити, знаючи, що абсциса (x-координата) точки N дорівнює -2, а точка N лежить у III координатній чверті, тобто її ордината (y-координата) буде меншою за 0. Позначимо ординату точки N як y_N:

N(-2;y_N)

Отже, координати точок М і N будуть:

М(x_M;3)

N(-2;y_N)

Покрокове пояснення:

Интересные вопросы
Предмет: Английский язык, автор: Sofixxxxx
China’s bamboo forests are often on very high mountains – but pandas

can easily climb as much as 4,000 metres up the sides of mountains.

Before the 1400s in Europe, Portugal’s southern coast was thought

to be the edge of the known world.

There are four small volcanoes inside the remains of Mount

Mazama volcano in Oregon, in north west USA.

Hurricanes north of the Equator spin in

the opposite direction to ones south of

the Equator.

About 12,000 years ago, the Sahara was

covered with millions of trees.

When forests flood along South America’s

Amazon River, river dolphins sometimes

swim around trees.

More capital cities start with the letter

B than with any other letter.

A town in Maryland, USA, is named ‘Boring’.

More people live in Tampa, Florida, USA, than in all of Iceland.

About 70% of the earth’s fresh

water is frozen within ice

sheets in Antarctica.

Namibia’s ‘Big Daddy’ sand

dune rises as high as a

100-storey building.

The United Arab Emirates has two man-made islands shaped like

palm trees.

The scorching deserts of North Africa don’t hurt the sand cat – the

animal’s paw pads are covered in fur to protect its feet from heat.

When a tsunami hit Japan in 2011, a motorcycle was taken by the

ocean and then found later in Canada.

Nearly 48 million football pitches would fit on the surface of

Australia’s Great Barrier Reef.

A super-strong hurricane in 2012 made the Mississippi River in the

USA flow backwards.

Cartographers (people who make maps) used to ride hot-air

balloons to view and map land.

Indonesia’s isolated and out-of-the-way Foja Mountains are home

to weird species such as the pinocchio-nosed frog.

One cave in Malaysia is big

enough to hold eight

jumbo jets.

The surface of the Pacific

Ocean is larger than all of

earth’s continents

combined.

Source:

(adapted from 30 Cool Things About

the World, Zachary Petit,

National Geographic Kids, May 2013)

B Complete the Exam Task.

Exam Task

Read ‘20 Cool Things about the World‘ again. Are sentences 1–10 ‘Right’ (A) or ‘Wrong’ (B)? If there is not enough

information to answer ‘Right’ (A) or ‘Wrong’ (B), choose ‘Doesn’t say’ (C).

1 Pandas aren’t at walking uphill.

2 Hurricanes spin in a clockwise direction in the Southern Hemisphere.

3 The Sahara Desert used to be a forest.

4 Dolphins can only live in seawater.

5 The population of Boring is very small.

6 Iceland’s population is smaller than Florida’s.

7 Most of the world’s fresh water is frozen.

8 It is impossible to sail from Japan to Canada.

9 Hurricanes can change the way a river flows.

10 The biggest cave in the world is in Malaysia.