Phrases
впишите пропущенное слово.
1. my cousin looks __ maria sharapova. they are both tall and have long fair hair.
2. l always have a great ime when i go out with my __ of friends.
3.when you __ a chat with your friends, what things do you talk about?
4. natasha and elena belong __ the same chess club.
5. juliette was __ love with romeo
6. who are you talking nobody is listening to you!
7. i'm sorry, i don't agree __ you.
8. __ present. i'm thinking of studying to be a maths teacher.

ответ:

1 like 2 group 3 do(не уверен) 4 come to 5 fall in 6 to 7 with 8 i don't like my

за 5, т.к. с первого поднимается на два за две, соотв. 1 этаж - 1 секунда.

6-1(т.к. поднимаемся с первого)

=5

5: 1=5секунд

а) запишем уравнение в следующем виде: tg(x)dy(x)/dy-y(x)=2

dy(x)/dy=(2-y(x))*ctg(x)

делим обе части на (2-y(x)):

(dy(x)/dy)/(2-y(x))=ctg(x)

интегрируем обе части по х:

инт((dy(x)/dy)/(2-y(=инт(ctg(x)dx)

получаем: lg(y+2)=lg(sinx)+c1

т.к. lg(y+2)-lg(sinx)=lg((y+2)/sin( то  lg((y+2)/sin(x))=с1

(y+2)/sin(x)=е^c1

y=c1*(sin(x)-2)