расставьте скобки в записи 7*9+12:3-2 так, что бы значение данного выражения равнялось 23.

Заполните пропуски артиклями, где требуется.
1. Lucy's mother is.....very beautiful woman. She is.....TV journalist. 2. Lucy's father is.....very nice man. He 
is.......lawyer. 3. He always goes to......work by.....car. 4. Lucy goes.....home on.....foot. 5. Lucy has..... 
brother, .a... brother is only 6 years old. 6. He likes to listen to......music. 7. Do you often speak on .... phone 
to.....friends? 8. In.....evening our friends like to play.....tennis in.... park. 9. Do you usually have......dinner 
with your parents? 10. Do you usually have.....tea or.....coffee for......lunch at ......office? 11. Wilt you close 
.....door, please! I am going to play......violin. 12. Why don't you always go to......London by ..... plane? 
13. Our chief often asks......secretary to send.....fax to.....Dublin.....secretary is usually very busy. She 
listens to..... radio or watches.....TV at.... office, and she asks.....colleague to send.....fax to.....Dublin...... 
colleague usually plays......computer games together with .... net-friend. In.... evening.... chief asks: «What is 
about .....fax to.....Dublin?».....secretary answers: «.... fax to.....Dublin? Maybe, it is.....there!»

найдите координаты вершины параболы y=x^2+4x+2

Сколько  времени тело будет свободно падать с высоты 80 м, если g =10м/с2?