Помогите с векторами.С решением.

1)записать координаты вектора a если a=4i+3j+4k.

2)Изобразить систему координат oxyz и построить точку (-1;2;3). Найти расстояние от этой точки до координатной плоскости.

3)построить точку А(0;0;1).

Решите срочно прлиз C-CH4-CH3CL-C2H6-C2H5CL-C4H10-C4H9NO2

                                                         МАТЕРИК АВСТРАЛИЯ.

1-Какие географические названия на австралийском материке связаны с именами её первооткрывателей?

2-Смещение Индо-Австралийской литосферной плиты приведёт к тому,что через 50млн лет Австралия окажется на экваторе,который пересечёт материк в средней части.Как изменится климат,растительный и животный мир Австралии?

3-Как изменилась бы природа Австралии,если Большой Водоразделительный хребет был расположен не на восточном,а на западном побережье материка?

4-Традиционные цвета спортивной формы олимпийской сборной Австралии-зелёный и оранжево-жёлтый.Как вы думаете,почему именно с этими цветами ассоциируется страна?А может быть,вы можете предложить свой вариант формы для австралийских олимпийцев?

                                                               помогите пожалуйсто:)

                                                                заранее огромное спасибо)))))

AEO ”NAZARBAYEV INTELLECTUAL SCHOOLS” TASKS FOR COMPETIVE SELECTION OF STUDENTS English, 8 grade 1. Choose the best answer: - Where can I have this ironed? - ......................... A) At the laundry. B) At the bank. C) At the shop. D) At the post-office. E) At school. *** 2. Choose the best answer: A police officer…. car was parked at the next corner stopped and arrested them. A) whose B) who C) when D) where E) which *** 3. Complete the sentence: Andy said that no other car could go ... his. A) as fast as B) as fast like C) as fast that D) so fast like E) so fast than *** 4. Choose the appropriate variant of indirect speech: Jane said: “Did you see that film last month?” A) Jane interested if I had seen that film the previous month B) Jane ordered if I had seen that film last month C) Jane asked that I had seen that film last month D) Jane asked if I saw that film last month E) Jane interested if I seen that film last month *** 5. Choose the appropriate word(s): Sara and Kelly were getting treatment in the ... hospital. Their cases were.... A) same/similar B) similar/same C) best/same D) bad/same E) bad/best *** 6. Choose the best answer: If you ……… to him, you ……… a lot. A) listen/will learn B) will listen/will learn C) listen/learn D) will listen/learn E) listened/ will learn *** 7. Find the appropriate modal verb: It is raining. You … take your anorak. A) should B) couldn’t C) shouldn’t D) mustn’t E) are must *** 8. Find the right variant: Sergei Bezrukov … as a talented actor by all. A) is recognized B) is recognize C) recognize D) was recognize E) were recognize *** 9. Find the appropriate modal verb: I have got toothache. I … go to the dentist. A) must B) mustn’t C) can have been D) should have done E) should be *** 10. Complete the sentence: He … the newspaper at the time you rang. A) was reading B) read C) was read D) were reading E) readed *** 11. Choose the appropriate variant of indirect speech: John said to Tom: “Do you want to go to the cinema?” A) John asked Tom if he wanted to go to the cinema. B) John asked Tom he wanted to go to the cinema. C) John asked Tom did he want to go to the cinema. D) John asked Tom if do he want to go to the cinema. E) John asked Tom he had wanted to go to the cinema. *** 12. Choose the right variant: By the time the police arrived, the thieves ……. the stolen money. A) had hidden B) hide C) will have hidden D) are hiding E) hid *** 13. Choose the best question: Bill reads newspapers in the kitchen every morning. A) What does Bill do in the kitchen? B) Where do they read newspapers? C) How many newspapers does Bill have? D) Who cooks in the kitchen? E) Where does he buy newspapers? *** 14. Choose the best question: It usually takes her 15 minutes to get to the office by underground. A) How long does it take her to get to the office by underground? B) How long does it usually take you to get to the office? C) Who got to the office in 15 minutes? D) It usually took her 15 minutes to get to the office by underground, didn`t it? E) Where do you get in 15 minutes? *** 15. Choose the right order to make up a story: 1. Meat comes from animals. 2. People cannot live without food. 3. Where does our food come from? 4. People eat domestic birds too. A) 2,3,1,4 B) 4,2,3,1 C) 1,2,3,4 D) 2,1,4,3 E) 3,4,2,1