3)Окружность задана уравнением (x+2)2+(y-5)2=18.Принадлежит ли этой окружности точка M(-5;2)? - Знания.site

3)Окружность задана уравнением

(x+2)2+(y-5)2=18.Принадлежит ли этой окружности точка

M(-5;2)?
- Предмет:
  Геометрия
- Автор:
  gooniemyu0
- 4 года назад

Ответы 1

(-5 + 2)2 + (2 - 5)2 = 18-3 * 2 + (-3) * 2 = 18-6 - 6 = 18- 12 = 18не принадлежит
- Автор:
  porcherspb
- 4 года назад
- 0
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ANIMALS IN THE AIR

One day in 1777 Josefh Montgolfier was relaxing in front of the fire with his laundry drying nearby.after a wrhile he noticed that one of his shirts had started to float upwarda.the toung man was curious abot what was happening so he thew some small pieces of paper into the fireplace to see it the same thing happened to them.when he saw them .when he saw them coming out of the chimney he came the conclusion that smoke had the power to lift things up and carry them through the air.Joseph loved science and wanted to become an inventor so he started thying to think of a craft that would be able to capture smoke and lift people off the ground.Alond with his brother Jacques he began perfoming experiments on something that later became the first hot-air balloon.
The Montgofier brothers quickly realised that it was heat and not smoke that had the power to lift things.On 19th September 1783 they presented their first hot-air ballon which was made from paper and clot .they burned some staw underneath it and the heat helped the ballon to float.As this was its first trip the Montgolfier brothers were too nervous to go up in the ballon themselves.So instead they put a sheep a duck and a chicken in the basket that hung below the balloon for the two-mile journey.
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