đừng tin lời Thạch nó nói dối đấy

a) Ap dụng định lí Py - ta - go vào tam giác vuông ABC có

BC^2 = AB^2 + AC^2

13^2 = 5^2  + AC^2

AC^2 = 13^2 - 5^2

AC^2 = 169 - 25

AC^2 = 144

AC = 12 cm

b) Xét tam giác vuông ABE và tam giác vuông DBE có :

 BE cạnh huyền chung

AB = DB  ( gt )

Suy ra tam giác vuông ABE = tam giác vuông DBE ( cạnh huyền - góc nhọn )

Suy ra góc ABE = góc DBE (2 góc tương ứng )

Suy ra BE là tia phân giác cuả góc B

CHRISTMAS SHOPPING WITH MOTHER Shoping with my mother has been (1) ……quite…….. fun for me. Though weeks before Christmas, mother had (2) ……completed………. All the shopping, a few important items had to (3) ………be…….. bought on Christmas eve. My mother and I left (4) ………home…….. in the morning. First we visited Plaza Singapura in Orchard Road, (5) ……where…………. We bought frozen meat. Then visited a (6) ……famous………... Singapore confectionery. Here we bought cakes, (7) ……puddings………… and icecreams. ( 8) ……However………, the final shopping was done at midday in one of the leading (9) ……department……… shops. Though we had already a (10) ………Christmas……….. tree at home, I was enchanted by another in the store and insisted that my mother(11) ………should……… buy that, too. She bought it and (12) ……we……… returned home. It was (13) ………indeed………… a very fascinating experience. I can’t not easily forget (14) ………such……… an important occasion.

My brother work as a doctor and they do, too.

Cơn Mưa Tình Yêu sai rồi, x²+1 > 0 sao mà có nghiệm đc

1. His sister has small white teeth and thin lips.
2. Is Mrs Brown's face round or oval (Hình như dư chữ "is")
3. There is some apples but there aren't any iced coffee.
4. I wouldn't like bread because I'm not hungry.
5. What is your brother's favorite drink?
6. There is a big garden behind Lan's house.
7. How do Mrs.Oanh and her family travel to HCM city?
8. They often go walking in the mountain near their house.

toan truong co : 336 + 264 =600(h/s)

vay ti so phan tram = 264:600=0,44=44%

số học sinh toàn trường là :

   336+264=600(học sinh)

Tỉ số phần trăm giữa học sinh nữ vs toàn truowngf là :

   (264:600)x100=44%

                 Đ/S: 44%

1. Keneth/the/fast/runner/my school
=> Keneth is the fastest runner in my school/
2. You/prefer/watch/football/to/play it?
=> Do you prefer to watch football or to play it?
3. It/time/Tom/find/job/earn living?
=> It' s time Tom found a job to earn his living/
4. It/possible/us/arrive/Hanoi/on time
=> It's possible for us to arrive in Hanoi on time?
5. It/take/Nam/his friend/4 hours/put up/tent
=> I takes Nam and his friend 4 hours to put up the tent
take sb time/money/,,, to do sth:
6. How much time/you/spend/cook/every day?
=> How much time do you spend cooking everyday?
7. They/change/job/last week/because/salary/low
=> They changed their job last week because the salary was low.
8. They/change/job/last week/low/salary
=> They changed their job last week because of the low salary.
9. He/kind/help/us/carry/shopping bags
=> He was very kind to help us carry our shopping bags.
10. It/be/nice/me/talk/you/since/we/meet
=> It has been nice for me to talk to you since we first met.
11. It/time/Tom/go/bed/now
(Tương tự câu 3)
12. Tom/leave/company/last week/although/salary/high
=> Tom left the company last week although the salary was high
13. Tom/leave/school/because/bad/health/though/he/good/student
=> Tom left school because of his bad health though he was a good student.
14. He/tall/reach/the ceiling
=> He is tall enough to reach the ceiling
15. That/man/run/fast/us/to follow
=> That man runs too fast for us to follow
16. It/very kind/you/make/friends/me
=> It's very kind of you to make friends with me

17. This/book/interesting/enough/you/read
=> This book is interesting enough for you to read
18. The fruit/green/to/be eaten
=> The fruit is not green enough to be eaten
19. I/want/her/perform/this/play
=> I want her to perform this play
20. I remember/them/take/me/zoo
=> I remember them taking me to the zoo
21. I remember/take/zoo/by my mother
=> I remember being taken to the zoo by my mother
22. I/not/like/tell/what to do/by my father
=> I don't like being told what to do by my father

fill in each blank of the passage with the words in the box
at 135 metres, the London Eye is the word's tallest observation (1)..........wheel....... .It has become the modern (2)..........symbol.... representing the capital of England and a global icon
The raual ratation in one of the 32 high-tech capdsules(3)......takes....... about 30 minutes and(4).......gives.... you a view of london. within each capsule the in teracive guide(5).........allows......... you to explore the captal's(6).......iconic....... landmarks in several languages
An exprience on the london eye will lift you(7).......close.... enough to see up to 40 kilometres on a clear day and keep you(8)..........high.......... enough to see the spectacular detais od the city beneath you