в треугольнике АВС угол с = 90 град, кос B = 3/5 АВ = 5. Найти АС   знаю что дурак но забыл всё =) подскажите =)

ПОЖАЛУЙСТА!!! СРОЧНО НУЖНО!!! раскройте скобки, используя глаголы в необходимой форме на английском!!! 

If I ( to have) time tonight I ( to finish ) this book .

He ( can ) take you to the concert tomorrow if he (to have) a spare ticket .

If they ( to have) plenty to time yesterday they ( to miss) the train .

If she ( to leave) at seven o"clock we ( to ask) her to give us a life.

If my frirnd ( to phone ) now I ( not to feel) so ionely .

If someone ( to give ) you a million what you ( to do ) .

If you ( to be able) to finish the job tomorrow you ( to have ) a holiday .

If he ( to check) the oil before driving he ( not to have ) problems with the car .

If she ( to be ) here now  she ( to help) you .

If  they ( to be ) piked for our team we ( to win ) the race next month

.The London fire never ( to stsrt) if the baker ( to put ) his oven out properly .

If somebody ( to invite ) you ( to go ) to the blind date ?

If they ( to stay ) in Kyiv they ( to live ) here for thirty  years .

If I ( to meet) him earling he ( not to be) late supper.

The bady ( to wake up) if you ( not to stop ) speaking like that.

1.Чим відрізняються органічні речовини від неорганічних

2.Яку валентність має Карбон в органічних сполуках

3.Якi сполуки називають вуглеводнiми

4.Що таке насичені вуглеводні

5.Загальні формули алканів,алкенів,алкінів.

6.Що таке ізомери,гомологи?

7Що таке мономер?

корень(3 - корень из 6)^ + корень(2 - корень из 6)^ =

из косвенной речи в прямую

Ted said "Do you hope to see a ghost in the castle,Mike?"

Alice said "I have just received an e-mail letter from my cousin"

Fred said "Do you know where we are going to meet the group"?

Amanda said "The guide will show us the most interesting landmarks"

Jessica said "Don't tell me anything about your plans,Jack!"

Peter said "What are you going to explain to me,Tom?"

Ron said "When can you call me back,Oscar?"