he always (travel)travels to work by motorbike

the sea(cover)covers most of the surface of the earth

vì theo đề bài cho: 1=10 thì 10=1

Ex choose the underlined part among A,B,C or D that needs correcting and corrects

1. Despite=>Although Jack stuđied hard, he did not pass the test

2: Even she=>Eventhough had never seen hom before, she immediately indentified hom when he stepped off the plane

3. Although I arrived in class late, but=>bỏ'but' I still did well on the test

4. Although many people claim that they like classcical music, but not all=>not all of them understand it

5. Although Tim always have a very tight schedule, but he=>he can manage time well to complete everything as planned

6. My brother went to see a movie in spite of=>although he had a lot of things to do

7. Although=>Despite the increases in airfares, most people stll perfer to travel by plane

8. However=>Despite small, the sitting room is well designed and nicely decorated

9. In a basketball game a player what=>which is fouled receives one or two free throws

10. We live in HCM city, is a=?where is a big cultural and industrical city

11. ALl her children have graduated from university, that=>why is the reason for her to be proud

12. this is the car which its=>which engine uses only 4 liters of petrol per 100 km

13. A warning sgin Over heat may come on, in that=>that case turn off the appliance at once

14. this is the store in where=>where you can buy anything you need for you project

15. Dad discovered I went out with Nik last night, for which=>when I wasn't suposed to do

a) (x + 2) . (y - 3) = 5.

vì x,y thuộc z nên x+2 và y-3 thuộc z

mà 5 = 1.5=-1.(-5)

=>  x+2=1             => x=-1

      y-3=5              => y=8

=>  x+2=5             =>x=3

      y-3=1              =>y=4

=>  x+2 =-1           =>x=-3

      y-3=-5             =>y=-2

=>  x+2=-5            =>x=-7

      y-3=-1             =>y=2

vậy (x;y) thuộc ..........

b)(x+1)(xy-1)=3

tương tự câu a 

gợi ý có 3 cặp x;y.

nhớ tick cho mình nhé!   

thanks nhé

mình không hiểu??????

=(1+2+3+...+99)^2=4950^2=24502500

TÍCH NHA !

làm cầu với các tưgợi ý

1. Mai / make orange juice / some oranges

Mai wants to make orange juice and some oranges .

Khi viết thêm chữ số 0 vào bên phải số bé thì được số lớn thì số bé gấp lên 10 lần vậy số lớn gấp 10 lần số bé

Ta có sơ đồ 

1^2+1^3+1^4+...+1^2011+1^2012=1+1+1+...+1+1      (có 1006 số 1)

=1006 .1=1006

TÍCH NHÉ !