647. Выпишите сначала обыкновенные, а затем десятичные дроби:

а)

67

100 ’ 10

; 5,87; 0,5;

38 87

; 0,025; 5

1000

- • Q П7* — •

100» и’и'’ з’ 53 *

б) 78,056; 0,24;

79

100’ 10

A

; 0,3; 78——; 0,005;

8

1000

10000 * 4 ’ 25

Упростите выражения:

а) sinβ ctgβ                                       б) tgα : tgβ

в) sinβ : tg β                                     г) cosα tgα

д) cos² α (1+tgβ)                               е) 1- sin²α+ctg²α sin²α

ж)tgα+tgβ                                         з) cos²α - ctg²α

    ctgα+ctgβ                                          sin²α - tg²α

7 минут 56 секунд умножить на 9 каков результат

Переведите пожалуйста.At Bristol Sports Club.Tanya is from a sports family.Her father and mother like to play big.Her brother is a good swimmer.She wants to join Bristol Sports Club.Диалог T:-Hello,Mr Brown! Mr-Hello!T--I am a sports fan.I want to join your sports club.Mr-Fine.What games do you play,Tanja?T-I can play basketball and I can play volleyball,too.Mr-Can you play football?T-No,I can*t.That*s a game for boys.Mr-Not only for boys.I*ve got a good football team of girls in our club.What games do you want to play?T-I want to play table tennis.Can I play it at your club?Mr-Of course you can.