Quãng đường người đó đi xe đạp trong 3 giờ là :

15 * 3 = 45 km

Thời gian để hai xe gặp nhau tại B là :

45 : ( 45 - 15 ) = 1,5 giờ

Quãng đường AB là :

45 * 1,5 = 67,5 km

Đ / S : 67,5 km

Giải các phương trình sau :

a, \(\left(x-1\right)\left(x^2+5x-2\right)-x^3+1=0\)

b, \(x^2+\left(x+2\right)\left(11x-7\right)=4\)

c, \(x^3-x\left(x+1\right)+1=0\)

d,\(4x^2-12x+5=0\)

EXERCISE ON REPORTED SPEECH

31. I asked the hotel porter to wake me at 8 o' clock the following morning.

-'' Please ................................

32. '' I don't think John will come ,'' said Bill.

- Bill doubted..................................

33. She asked John how he liked her new dress.

- '' How....................................

34. John asked if it was the blue one or the green one she wanted.

-'' Which........................................................

35. '' Why don't you put a better lock on the door , Mary ? '' said John.

- John suggested.............................................

Giúp mk với !

Các bn ơi cho mk hỏi cách dán 1 nội dung vào câu trả lời thì lm thế nào vậy

Ex13 : Change in to the passive voice.

1. Peter asked me not to buy that apartment.

2. He ordered the boy to hand in his paper test .

3. They used to call the band Big Toe.

4. I asked the man to show me the way to Ho Tay water park.

5. She makes him wash his hands before meals.

6. All the students call him '' the great brother ''.

7. She asked me to lend hẻ some money.

8. She asked me to help the poor boys in our village.

9. He permitted us to use the office phone.

10. They told me to clean the living room for the party.

11. He asked me to stay in bed untilbhe comes.

EXERCISE ON SPECIAL PASSIVE

1. She used to pull my hat over my eyes .

2. For the past years, I have done all my washing by hand.

3. The police haven't found the murderer yet.

4. They sold one of her own paitings at $1000.

5. I will put your gloves back in your drawer.

6. Have you seen Philip lately ?

7. When did you receive my letter ?

8. Mr . Speed is dictating 3 letters to Ann.

9. When I came back home , my mother was preparing lunch.

10. The house was dirty because we hadn't cleaned it for weeks.

11. My parents encouraged me to apply for this job.

12. Ercopean countries decided to put a high tax on petrol.

13. They were carrying the injured player off the field.

14. You should pay more attention to your study.

15. Did anyone take English books away?