Как складываются взаимоотношения РФ с бывшими союзными республиками СССР?

Поомгите решить:

1) (х-50.6)+2.15ровно42.9

2)31.28-(m+4.2)ровно15.093

Помогите вставить нужные слова. 1)I've made ... mistakes now than I made last time.

a. fewer

b. a few

c. less

d. few

2)What ... bad weather we are having today!

a. an

b. a

c. the

d. -

3)Do you know when he ... ?

a. come

b. will come

c. shall come

d. comes

4)He works ... and makes good progress.

a. was

b. is

c. had been

d. has been

5)I had a feeling that somebody ... there before. a. was b. is c. had been d. has been 6)When the phone rang, I... dinner. a. have been cooking b. had been cooking c. was cooking d. cook 7)I don't have any pets. Neither ... . a. she does b. does she have c. does she d. is she 8)She won't see him ... he phones her. a. except b. after c. unless d. because 9)Did you read ... English books at school? a. some b. many c. none d. much 10)This translation is twice as ... . a. the easiest b. easy c. much easier d. easier 11)Mary is here. Where are ... ? a. the others b. other c. others d. another 12)My watch... . a. has stopped b. have stopped c. stop d. stops 13)I... glasses since I was a child. a. wore b. am wearing c. wear d. have been wearing 14)We ... two compositions this month. a. were writing b. have written c. wrote d. write 15)He reminds me ... someone I knew in the army. a. from b. about c. of d. tо 16)... only one theatre and two cinemas in this city ten years ago. a. There is b. There were c. There are d. There was 17)Can ... of you help me? a. some b. any c. somebody d. anybody 18)I want to know what ... . a. will you do b. were you doing c. you are doing d. are you doing 19)His parents didn't let him ... TV late. a. watch b. watching c. to watch d. watched 20)He usually had dinner at 4 p.m., ... ? a. did he b. had he c. hadn't he d. didn't he

решите уравнение log5(-2cosx)/корень из5tgx=0