Найти объём кислорода необходимый для сжигания 6 л. ацетилена.

Упростите. применяя формулы приведения:

cos(3П-a) + ctg(3,5П-a) + cos(3П/2 +a) ctg(П+a)

П - это Пи

a - Альфа

Вычислите вес и массу воздуха в комнате в которой я делаю уроки.Если известно что площадь комнаты 40,5 м.

Выбери число,у которого в разряде единиц класса тысяч стоит цифра 6.                      1)352.086 2)61.703  3)860.306  4)506.112

Переведите пожалуйста на русский язык.ТОЛЬКО не Promt/Googl.

The Keane family from  England had a two-week holiday in South Carolina, USA.

Tim and Katy Keane and their children, Bethany (8), Charles (9) and Joe (16), couldn't believe their luck when they arrived at Washington Drive, Greenville. "The houses were all enormous," said Tim. "I expected to see film stars coming out of them!" The Millers' house has five bedrooms, a study, two bathrooms and an extra  downstairs toilet. "Our bedroom was huge and it was lovely having an en-suite," said Katy. "It was like staying in a hotel!" "We didn't see much of the children for two weeks!" says Tim. "They were either in the computer room, in the basement or outdoors." The weather was fine for the Keanes' visit to South Carolina,  so they made good use of the Millers' yard. "The Millers had sports equipment  and a permanent barbecue in their yard," said Joe. "And their neighbours  had  a  swimming pool, which we used once. It was great!" "The children really enjoyed  the yard," said Katy, "but I found it a bit dull.

 I like nice English gardens with lots of flowers. All the Millers had  a few trees." And Katy didn't think much of the decor either. "It was all very smart and clean " she said, "but it wasn't very colourful. It's obvious that Americans spend more time outdoors than the British! We had good weather, but luckily we didn't need to use the air-conditioning system. The Millers had lots of security systems and alarms that we had to  fiddle with every night and morning - that was complicated enough!"