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14 tháng 8 2016

Bài nào vậy, chụp hình đi

Bài 2: 

a: Ta có: ΔABC cân tại A

mà AH là đường cao

nên AH là tia phân giác của góc BAC

b: Xét ΔAMH vuông tại M và ΔANH vuông tại N có

AH chung

\(\widehat{MAH}=\widehat{NAH}\)

Do đó: ΔAMH=ΔANH

Suy ra: AM=AN

hay ΔAMN cân tại A

c: Xét ΔABC có AM/AB=AN/AC

nên MN//BC

d: \(AH^2-AN^2=HN^2\)

\(BH^2-BM^2=MH^2\)

mà HN=MH

nên \(AH^2-AN^2=BH^2-BM^2\)

hay \(AH^2+BM^2=BH^2+AN^2\)

20 tháng 2 2022

Vẽ hình giúp e đc ko ạ

bn tìm trên VIOlet ít

ghi tiêu đề bài ví dụ unit1 my hobby skill 1 violet

18 tháng 9 2016

mik nhờ làm unit6 not phải unit1.....

Bài 2: Chọn C

Bài 4: 

a: \(\widehat{C}=180^0-80^0-50^0=50^0\)

Xét ΔABC có \(\widehat{A}=\widehat{C}< \widehat{B}\)

nên BC=AB<AC

b: Xét ΔABC có AB<BC<AC

nên \(\widehat{C}< \widehat{A}< \widehat{B}\)

9 tháng 1 2023

AE/EC=1/6(dùng tỉ lệ diện tích tam giác)

 

9 tháng 1 2023

tính kiểu j ra vậy ạ

 

giúp mik gấp, mai phải trả bài miệng rồi                                              PRACTICE TEST (UNIT 7) Ex 1: Read and match:1.     How many English lessons do you have a week?a. I usually talk with foreigners.1.      2.     Who is your English teacher?b. Of course, very much.2.      3.     When do you have English?c. I listen to English songs and read English books.3.      4.     How do you practise speaking?d. Because I want to become an English teacher.4.      5.     What do...
Đọc tiếp

giúp mik gấp, mai phải trả bài miệng rồi

                                              PRACTICE TEST (UNIT 7)

 

Ex 1: Read and match:

1.     How many English lessons do you have a week?

a. I usually talk with foreigners.

1.      

2.     Who is your English teacher?

b. Of course, very much.

2.      

3.     When do you have English?

c. I listen to English songs and read English books.

3.      

4.     How do you practise speaking?

d. Because I want to become an English teacher.

4.      

5.     What do you think about English?

e. Yes, I do. We go to English Club together.

5.      

6.     How often do you watch English film?

g. It’s Miss Huong.

6.      

7.     Do you help your friends learn English?

h. I have it five times a week.

7.      

8.     How do you learn English?

i. I sometimes watch after dinner.

8.      

9.     Do you like English?

j. Mondays and Wednesdays.

9.      

10.            Why do you learn English?

k. It’s a useful and interesting language.

10.             

 

 

Ex 2: Choose the best answer:

1. What foreign _____ do you have at school?

A. subject             B. song                 C. language          D. book

2. I want _______ with my foreign friends Tony.

A. to talking                   B. talking             C. talk                  D. to talk

3. They write emails to _____ other every day.

A. every               B. each                 C. one                   D. they

4. How do you _________ listening? – I watch English cartoons on TV.

A. practise            B. learn                C. want                D. have

5. She practices _____ by ______ English short stories.

A. reading/ read    B. reading/ reading         C. read/ reading     D. read/ read

6. We learn English _______ we want to read comic books.

A. because            B. so                     C. and                  D. why

7. When I see a new word, I try to guess its _______.

A. name                B. vocabulary       C. meaning           D. language

 

 

 

Ex 3: Find and correct the mistake:

1.     She practises listen by listening to English songs.......................                   

2.     I write new words in my notebook and reads them aloud...........          

3.     He writes new words in a small note and stick it on the wall......

4.     Mai learns often to speak English by herself...............................          

5.     Hoa and Tuan usually writes email to their foreign friends.........          

6.     My mother like learning English too.            ..............................

7.     She learns English because she wants have a good job in the future.   

8.     You can learn English with singing English songs......................          

 

Ex 4: Read the text carefully:

My name is Linh. I’m a pupil at Kim Dong Primary School. I’m in class 5A with Lee and John. I love reading comic books. I often read them in my free time. When I see a new word, I try to guess its meaning. I write the word in my notebook and say it many times. I often stick new words on my bedroom walls and practise reading them aloud. Lee and John love learning English too. We often learn to speak English by talking with our foreign friends in our free time. Lee is very good at English. She usually practises listening by watching cartoons on TV. She learns to write my writing emails to her friends every day. John loves reading. He goes to the library twice or three times a week. He usually read English books to practise reading. They always help me to learn English. We are happy because we can understand each other. English is necessary for communication.

A.      True or False:

 

1.     Linh, Lee and John are in class 5A..........  

2.     They love learning English......................  

3.     Lee loves reading English books.............  

4.     Linh likes watching cartoons...................  

5.     They can understand each other..............  

6.     John sticks new words in his bedroom…...

     B.           Answer the following questions:

1. What does Linh do when she see a new word?

     ……………………………………………………………………

2. How do they learn to speak English?

     ……………………………………………………………………

3.     Who is good at English?

…………………………………………………………………..             

4.     How often does John go to the library?

…………………………………………………………………..

5.     Is English necessary for communication?

      …………………………………………………………………..

3
19 tháng 11 2021

tách từng bài ra bn

19 tháng 11 2021

okkhocroi

23 tháng 10 2023

3n + 4 = 3n - 6 + 10

= 3(n - 2) + 10

Để (3n + 4) ⋮ (n - 2) thì 10 ⋮ (n - 2)

⇒ n - 2 ∈ Ư(10) = {-10; -5; -2; -1; 1; 2; 5; 10}

⇒ n ∈ {-8; -3; 0; 1; 3; 4; 7; 12}

Mà n là số tự nhiên

⇒ n ∈ {0; 1; 3; 4; 7; 12}

Bạn chụp lại đề nha bạn

12 tháng 6 2023

=(9/25 + 16/25) + ( 2/11 + 9/11)+ (10/17 + 7/17)

= 1    +     1       +          1

= 3

Toán này đâu khó!

12 tháng 6 2023

1=1=1=3

 

giúp mik gấp, mai là phải trả bài rùi                                                                                         PRACTICE TEST (UNIT 7) Ex 1: Read and match:1.     How many English lessons do you have a week?a. I usually talk with foreigners.1.      2.     Who is your English teacher?b. Of course, very much.2.      3.     When do you have English?c. I listen to English songs and read English books.3.      4.     How do you practise speaking?d. Because I want to become an...
Đọc tiếp

giúp mik gấp, mai là phải trả bài rùi                                 

                                                        PRACTICE TEST (UNIT 7)

 

Ex 1: Read and match:

1.     How many English lessons do you have a week?

a. I usually talk with foreigners.

1.      

2.     Who is your English teacher?

b. Of course, very much.

2.      

3.     When do you have English?

c. I listen to English songs and read English books.

3.      

4.     How do you practise speaking?

d. Because I want to become an English teacher.

4.      

5.     What do you think about English?

e. Yes, I do. We go to English Club together.

5.      

6.     How often do you watch English film?

g. It’s Miss Huong.

6.      

7.     Do you help your friends learn English?

h. I have it five times a week.

7.      

8.     How do you learn English?

i. I sometimes watch after dinner.

8.      

9.     Do you like English?

j. Mondays and Wednesdays.

9.      

10.            Why do you learn English?

k. It’s a useful and interesting language.

10.             

 

 

Ex 2: Choose the best answer:

1. What foreign _____ do you have at school?

A. subject             B. song                 C. language          D. book

2. I want _______ with my foreign friends Tony.

A. to talking                   B. talking             C. talk                  D. to talk

3. They write emails to _____ other every day.

A. every               B. each                 C. one                   D. they

4. How do you _________ listening? – I watch English cartoons on TV.

A. practise            B. learn                C. want                D. have

5. She practices _____ by ______ English short stories.

A. reading/ read    B. reading/ reading         C. read/ reading     D. read/ read

6. We learn English _______ we want to read comic books.

A. because            B. so                     C. and                  D. why

7. When I see a new word, I try to guess its _______.

A. name                B. vocabulary       C. meaning           D. language

 

 

 

Ex 3: Find and correct the mistake:

1.     She practises listen by listening to English songs.......................                   

2.     I write new words in my notebook and reads them aloud...........          

3.     He writes new words in a small note and stick it on the wall......

4.     Mai learns often to speak English by herself...............................          

5.     Hoa and Tuan usually writes email to their foreign friends.........          

6.     My mother like learning English too.            ..............................

7.     She learns English because she wants have a good job in the future.   

8.     You can learn English with singing English songs......................          

 

Ex 4: Read the text carefully:

My name is Linh. I’m a pupil at Kim Dong Primary School. I’m in class 5A with Lee and John. I love reading comic books. I often read them in my free time. When I see a new word, I try to guess its meaning. I write the word in my notebook and say it many times. I often stick new words on my bedroom walls and practise reading them aloud. Lee and John love learning English too. We often learn to speak English by talking with our foreign friends in our free time. Lee is very good at English. She usually practises listening by watching cartoons on TV. She learns to write my writing emails to her friends every day. John loves reading. He goes to the library twice or three times a week. He usually read English books to practise reading. They always help me to learn English. We are happy because we can understand each other. English is necessary for communication.

A.      True or False:

 

1.     Linh, Lee and John are in class 5A..........  

2.     They love learning English......................  

3.     Lee loves reading English books.............  

4.     Linh likes watching cartoons...................  

5.     They can understand each other..............  

6.     John sticks new words in his bedroom…...

     B.           Answer the following questions:

1. What does Linh do when she see a new word?

     ……………………………………………………………………

2. How do they learn to speak English?

     ……………………………………………………………………

3.     Who is good at English?

…………………………………………………………………..             

4.     How often does John go to the library?

…………………………………………………………………..

5.     Is English necessary for communication?

      …………………………………………………………………..PRACTICE TEST (UNIT 7)

 

Ex 1: Read and match:

1.     How many English lessons do you have a week?

a. I usually talk with foreigners.

1.      

2.     Who is your English teacher?

b. Of course, very much.

2.      

3.     When do you have English?

c. I listen to English songs and read English books.

3.      

4.     How do you practise speaking?

d. Because I want to become an English teacher.

4.      

5.     What do you think about English?

e. Yes, I do. We go to English Club together.

5.      

6.     How often do you watch English film?

g. It’s Miss Huong.

6.      

7.     Do you help your friends learn English?

h. I have it five times a week.

7.      

8.     How do you learn English?

i. I sometimes watch after dinner.

8.      

9.     Do you like English?

j. Mondays and Wednesdays.

9.      

10.            Why do you learn English?

k. It’s a useful and interesting language.

10.             

 

 

Ex 2: Choose the best answer:

1. What foreign _____ do you have at school?

A. subject             B. song                 C. language          D. book

2. I want _______ with my foreign friends Tony.

A. to talking                   B. talking             C. talk                  D. to talk

3. They write emails to _____ other every day.

A. every               B. each                 C. one                   D. they

4. How do you _________ listening? – I watch English cartoons on TV.

A. practise            B. learn                C. want                D. have

5. She practices _____ by ______ English short stories.

A. reading/ read    B. reading/ reading         C. read/ reading     D. read/ read

6. We learn English _______ we want to read comic books.

A. because            B. so                     C. and                  D. why

7. When I see a new word, I try to guess its _______.

A. name                B. vocabulary       C. meaning           D. language

 

 

 

Ex 3: Find and correct the mistake:

1.     She practises listen by listening to English songs.......................                   

2.     I write new words in my notebook and reads them aloud...........          

3.     He writes new words in a small note and stick it on the wall......

4.     Mai learns often to speak English by herself...............................          

5.     Hoa and Tuan usually writes email to their foreign friends.........          

6.     My mother like learning English too.            ..............................

7.     She learns English because she wants have a good job in the future.   

8.     You can learn English with singing English songs......................          

 

Ex 4: Read the text carefully:

My name is Linh. I’m a pupil at Kim Dong Primary School. I’m in class 5A with Lee and John. I love reading comic books. I often read them in my free time. When I see a new word, I try to guess its meaning. I write the word in my notebook and say it many times. I often stick new words on my bedroom walls and practise reading them aloud. Lee and John love learning English too. We often learn to speak English by talking with our foreign friends in our free time. Lee is very good at English. She usually practises listening by watching cartoons on TV. She learns to write my writing emails to her friends every day. John loves reading. He goes to the library twice or three times a week. He usually read English books to practise reading. They always help me to learn English. We are happy because we can understand each other. English is necessary for communication.

A.      True or False:

 

1.     Linh, Lee and John are in class 5A..........  

 

2.     They love learning English......................  

3.     Lee loves reading English books.............  

4.     Linh likes watching cartoons...................  

5.     They can understand each other..............  

6.     John sticks new words in his bedroom…...

     B.           Answer the following questions:

1. What does Linh do when she see a new word?

     ……………………………………………………………………

2. How do they learn to speak English?

     ……………&hel...

1
19 tháng 11 2021

 

1. What foreign _____ do you have at school?

A. subject             B. song                 C. language          D. book

2. I want _______ with my foreign friends Tony.

A. to talking                   B. talking             C. talk                  D. to talk

3. They write emails to _____ other every day.

A. every               B. each                 C. one                   D. they

4. How do you _________ listening? – I watch English cartoons on TV.

A. practise            B. learn                C. want                D. have

5. She practices _____ by ______ English short stories.

A. reading/ read    B. reading/ reading         C. read/ reading     D. read/ read

6. We learn English _______ we want to read comic books.

A. because            B. so                     C. and                  D. why

7. When I see a new word, I try to guess its _______.

A. name                B. vocabulary       C. meaning           D. language

 

 

19 tháng 11 2021

thanks bạn nhé!