-1/10   <    1/1000

-------a,Trên cùng 1 một nửa mặt phẳng bờ Ox có:

xOy=75*, xOz=25*

=> xOz<xOy

=> Oz nằm giữa

------b,vì Oz nằm giữa Ox và Oy

=>xoz+zoy=xoy

=>25*+zoy=75*

=>zoy=75*-25*=50*

------c,vì om là tia phân giác góc yoz

=>zom=moy=1/2zoy=1/2.50*=25*

Trên cùng 1 một nửa mặt phẳng bờ Ox có:

xoy>moy(75*>25*)

om nằm giữa ox và oy

=>yom+mox=xoy

mox=75*-25*=50*

a,1/128

b,16

c,-1

d,1

(1/3)^3.10^3 = 1000/27

(-2/3)^4:2^4 = 1/81

(2/3)^4.9^2 = 16

                                            Đổi: 80,5%=161/200

      Tổng số phần bằng nhau : 161+200=361(phần)

      Số m vải hoa: 361:361.161=161(m)

      Số m vải trắng: 361-161=200(m)

a, x=4/45

b,  x=3

5^5/5+5^2+5^3+5^4 > 3^5/3+3^2+3^3+3^4

1.Hair color is one of..............characteristics to be used in identifying people.

A.the most obviously      B.most obvious   C.bobviously the most     D.the most obvious

2.Vienam is now one of the........rivals in the Southeast Asian Games.

A.strong           B.stronger          C.strongest     D.most strong

3.At college the work is.......than the work we did at school,but it is much............

A.harder-more interesting                                         B.hardest-most interesting

C.harder-most interesting                                         D.more hard-more interesting

4.Mary was........of the two sisters.

A.the clever            B.as clever as            C.the cleverer      D.the cleverest

5.I feel...........I did yesterday.

A.much more tired than    B.many more tired than   C.as many as tired   D.as more tired as.

6.People should eat......and do.........to reduce the risk of heart disease.

A.less fat /more exercise                                B.less and less fat/the more exercise

C.the less fat /the more exercise                    D.fatter/more exercise

7.The Queen of England is one of the......women in the world.

A.richer      B.richest      C.most rich     D. as rich as

8.I'm sorry I'm late.It took me.........to get here than I expected.

A.longer     B.futher       C.more    D.less

9.What's the.................flim you've ever seen?

A.good      B. interesting    C.best     D.boring

10.Peter is.....John.

A.younger and more intelligent than                    B.more young and intelligent than

C.more intelligent and younger than              D.the more intelligent and younger than