cho tam giác abc đều cạnh a .Khi đó độ dài vecto AC - vecto BA bằng?

EXERCISES (REPORTED SPEECH: IMPERATIVES)
1. She said to him: “give me another glass of wine”.
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2. She said to me: “bring me a book”.
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3. Mother said to him: “open the window please!”.
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4. He said to me: “shut the door after you”.
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5. The captain said to them: “wait here still I come back”.
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6. She told her: “take it and come with me”.
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7. He said to me: “don’t come back before one o’clock”.
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8. My mother told me: “don’t forget to look at the door”.
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9. He said to his brother: “don’t open the window, open the door”.
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10. He said to the girl: “don’t sit on my bed, sit on this chair please!”.
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EXERCISES (REPORTED SPEECH: WH-QUESTIONS)
1. “Where does your father work?” The teacher asked me
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2. “How many people are there in your family?” She asked Lan
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3. Tam’s friend asked him “How long will you stay in England?”
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4. “Are there some oranges in the fridge?” She asked her mom
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5. The teacher said to Lien “What‘s your hobby?”
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6. “How do you go to the airport?” His friend asked him
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7. “How much does this dress cost?” Lan asked Lien
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8. Ba asked Tam “How often do you wash your clothes?”
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9. “When will your father leave Vietnam for the USA?” Phong asked Thu
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10. “How many books do the students need?” The librarian asked my teacher
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Change these sentences into Reported Speech:

EXERCISES (REPORTED SPEECH: STATEMENTS)

1. Nam said “I am told to be at school before 7 o’clock”
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2. Thu said “All the students will have a meeting next week”
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3. Phong said “My parents are very proud of my good marks”
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4. The teacher said “All the homework must be done carefully”
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5. Her father said to her “You can go to the movie with your friend”
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6. Hoa said “I may visit my parents in the summer”
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7. The teacher said “We can collect old book for the poor students”
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8. She said “She doesn’t buy this book”
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9. The boys said “We have to try our best to win the match”
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10. Her classmate said “Lan is the most intelligent girl in our class”
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11. They told us “Our friends will get the award for their highest scores”
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12. He said “I will go to school by bus tomorrow”
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13. Phong said “I need to learn more vocabulary”
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14. His brother told him “You can use my computer today”
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15. Mai said “I cannot go to the movies with you, Nam”
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cho các số nguyên dương a,b,c,d thoả mãn a+b=c+d=1000 hỏi khi nào tổng a/c+b/d đạt giá trị lớn nhất

Fill in:Who or What

Sue:  1) ...... are you looking ,Jim?

Jim: A photo from friend's costume party.

Sue: 2) ........ are you wearing?

Jim; A tiger costume.

Sue:It's funny! And 3) ................  is this behind you?

Jim: 4) .............  are you talking about?

          The boy in the dog costume?

Sue: No,the girl in the cat costume

Jim:That is my friend,Marry.

Sue: 5) ............... is she doing?

Jim: She is posing for the photo!

cho các số nguyên dương a,b,c,d thoả mãn a+b=c+d=1000 hỏi khi nào tổng a/c+b/d đạt giá trị lớn nhất

cho hình thang ABCD có góc A=60 , góc C = 130 tính các góc của hình thang biết rằng góc A = 3.D , góc B - C = 30 ai chỉ mik vs ạ !!

Cho 23,7 gam hỗn hợp Al, Al2O3 tác dụng vừa đủ 2,5 lít dung dịch HNO3 bay ra 1 hỗn hợp khí NO, N2O có tỉ khối so với khơng khí là 1,324. Cho 0,3 lít dung dịch NH3 7 M vào dung dịch thu
được thì làm kết tủa hết ion Al3+.Tính khối lượng mỗi chất trong hỗn hợp đầu. Tính CM dung dịch
HNO3( không tạo NH4NO3)

Chuyển sang BĐ:

Loan made her new dress by herself

Viết lại câu giữ nguyên nghĩa vs từ trong ngoặc.

Câu 1: Jimmy said that the house was nice, he would certainly buy it. ( think of)

2.She said that she was grateful to him for his help ( thank)

Tìm tập giá trị lớn nhất, giá trị nhỏ nhất của hàm số sau y = sin(x) + $\sqrt{2-\sin ^2x}$

Rút gọn biểu thức:

a,$\frac{1}{1-\sqrt{3}}-\frac{1}{1+\sqrt{3}}$

b,$\frac{3}{\sqrt{5}-\sqrt{2}}+\frac{4}{\sqrt{6+\sqrt{2}}}+\frac{1}{\sqrt{6}+\sqrt{5}}$

c,$(\frac{2}{\sqrt{5}-\sqrt{3}}-\frac{2}{\sqrt{5}+\sqrt{3}}):\frac{2+\sqrt{3}}{\sqrt{3}-2}$

d,$\sqrt{\frac{3\sqrt{3}-4}{2\sqrt{3}+1}}-\sqrt{\frac{\sqrt{3+4}}{5-2\sqrt{3}}}$

Rút gọn biểu thức:

1,P=$(\sqrt{3}-1)\frac{3+\sqrt{3}}{2\sqrt{3}}$

2,B=$\frac{2}{\sqrt{7}-\sqrt{6}}-\sqrt{28}+\sqrt{54}$

3,A=$\frac{4}{\sqrt{3}-1}-\frac{2}{\sqrt{2}+\sqrt{3}}-\sqrt{8}$

4,$\frac{50-\sqrt{25}}{\sqrt{36}}$

5,$M=\frac{6}{2-\sqrt{3}}+\sqrt{(2-\sqrt{3{)}^2}}-\sqrt{75}$

6.$\frac{2}{\sqrt{2}+2}+\frac{1}{3}.\sqrt{18}$

7,P=$(\frac{1}{2-\sqrt{3}}-\frac{1}{2+\sqrt{3}}).\frac{\sqrt{3}-1}{3-\sqrt{3}}$

8,A=$\sqrt{\frac{2+\sqrt{3}}{2-\sqrt{3}}}-\sqrt{\frac{2-\sqrt{3}}{2+\sqrt{3}}}$

Góc nhìn học tập thời Covid

giúp với đề trong phần bình luận

Tính tổng S=1+4+4^2+4^3+.........+4^100

Làm nhanh giúp mình nha

Cho dãy số: 1; 2; 3; .............. ; x

a. Chữ số thứ 2018 được dùng để viết dãy số trên là chữ số nào?

Cho hình bình hành ABCD và O là tâm đối xứng trên tia đối AD lấy điểm M bất kì. Trên tia đối CD lấy điểm N bất kì sao cho AM=CN

a)CMR AB // DN

b)CMR M và N đối xứng với nhau qua O