периметр прямоугольного треугольника равен 24 см., а его площадь 24 см в квадрате.Найдите площадь описанного около этого треугольника круга.

1.а) При каком значении а прямая ах+2у=11 проходит через точку С(7; 5)?

 б) При каких значениях а и b прямая ах+by=1 проходит через точки А(-5; 8) и В(3;-4)

2. При каком значении k прямая:

а) у=kx-3 проходит через точку А(-2; 9);

б) y=kx+5 проходит через точку В(10; 5);

в) y=kx+4 параллельна прямой x+3y=1;

г) y=kx-7 пареллельна прямой 4x-5y=3?

помогите перевести на русский с английского: A clever bird (come) to a house in the country because she wanted to have breakfast. She (run) from one room to another and suddenly she (see) a big black cat. The cat (jump) and (catch) the bird. "Now I can have a nice breakfast", the cat (say). "You can`t have breakfast now," said the bird, "you must wash. The farmer and his family always wash their hands before breakfast. You live in their house and you must do what they do." "All right," the cat (say). " I live with a farmer and in his house, and I must do what they do." And the cat opened his mouth and (begin) to wash. But when he (be) in the garden in a tall tree. She was happy and (begin) to sing. "Now I see," the cat (say). " I must wash, but I must wash after dinner." And now all cats wash after dinner.

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