ở chỗ mk chưa thi. mà nếu thi rồi thì đâu có nhớ đề để cho bạn xem

mk ở TP khác lấy ko 

mình thi xong rồi nè!phần tự luận câu cuối có bài giải đấy.câu đầu hỏi về sương mù thường suất hiện vào mùa nào?

_{\(\frac{7}{60}\)}

A=1/30+1/42+1/56+1/72+1/90+1/110+1/132

A=1/5.6+1/6.7+1/7.8+1/8.9+1/9.10+1/10.11+1/11.12

A=1/5-1/6+1/6-1/7+1/7-1/8+...-1/11+1/12

A=1/5-1/12

A=7/60

Vậy A= 7/60

A=1/5x6+1/6x7+1/7x8+1/8x9+1/9x10+1/10x11+1/11x12

=1/5-1/6+1/6-1/7+1/7-1/8+1/8-1/9+1/9-1/10+1/10-1/11+1/11-1/12

=1/5-1/12

=7/60

tk cho mình nha

I. Choose the word which has the underlined part pronounced differently from the others. (1mark)

1. A. Breakfast     B. Teacher       C. East        D. Please

2. A. Children      B. Church       C. Headache    D. Beach

3. A. See         B. Salt         C. Small       D. Sugar

4. A. Mother       B. Thirteen      C. Father       D. Then

II. Circle the word or phase (A, B, C or D) that best completes each of the following sentences. (2 marks)

1. Phuong doesn’t football and …… Mai.

  A. so is         B. so does      C. does so      D. neither does

2. These papayas aren’t ripe and ….. are the pineapples.

  A. so           B. too          C. neither       D. either

3.The dirt from vegetables can make you ……...

  A. bored        B. tired         C. sick         D. well

4. You must do your homework more ……. in the future.

  A. careful       B. care         C. careless      D. carefully

5. You should ……. early if you want to do morning exercise.

  A. get up       B. getting up      C. to get up     D. to getting up

6. Hoa is a ….. worker.

  A. hardly       B. hard          C. more hard     D. most hard

7. Last night we didn’t watch the film on TV because it was ……..

  A. bore        B. bored          C. boring       D. boredom

8 . Mai enjoys ….. sea food with her parents .

  A. to eat       B. eating          C. eat         D. to eating

III. Supply the correct forms of the verbs in brackets. (2 marks)

1. He (wash)………………………….the dishes everyday.

2. We (play)…………………………volleyball tomorrow

3. She (not watch) …………………TV last night.

4. ……… they (go) …………………….to school now?

IV. Write the sentences. Use the cue words. (3 marks)

1. I/not /read books

…………………………………………………………………………………….

2. He/be/good/soccer/player.He/play/soccer/good.

…………………………………………………………………………………….

3. Mai/prefer/meat/fish.

…………………………………………………………………………………….

4 They/prefer/listen/music/watch/TV

…………………………………………………………………………………….

5 He/do/homework/last night.

…………………………………………………………………………………….

5 Hoa/not go/school/yesterday/because/she/be/sick.

…………………………………………………………………………………….

V. Read the passage carefully then answer questions. (2 marks)

In 1960s, most people in Vietnam did not have a TV set. In the evening, the neighbors gathered around the TV. They watched until the TV programs finished. The children might play with their friends and the older people might talk together. Vietnam is different now. Many families have a TV set at home and the neighbors don’t spend much time together.

Questions:

1. Did most people have a TV set in 1960s?

………………………………………………………………………………

2.How long did they watch TV programs?

………………………………………………………………………………

3. What might the children do?

………………………………………………………………………………

4. What might the older people do?

………………………………………………………………………………

có đáp án luôn ko bạn

mk thi r, nhung khac truong nen chac de ko giong dau

Bạn cứ viết đề ra cho mk xem đi. Chắc trúng vài câu đó.

Cái j ngày mai thi địa á hả

\(S=3+\frac{3}{2}+\frac{3}{2^2}+...+\frac{3}{2^9}\)

   \(=3\left(1+\frac{1}{2}+\frac{1}{2^2}+...+\frac{1}{2^9}\right)\)

    \(=3\left(2-1+1-\frac{1}{2}+\frac{1}{2}-\frac{1}{2^2}+...+\frac{1}{2^8}-\frac{1}{2^9}\right)\)

    \(=3\left(2-\frac{1}{2^9}\right)=6-\frac{3}{2^9}=6-\frac{3}{512}=\frac{3069}{512}\)

Quy luật của nó là gì vậy sao lại 2+2²+.....+2⁸ hoặc 2¹⁰

Mà bạn lại ghi là 2⁹ quy luật của nó là gì 

đề cho mk hk bt pn

\(S=3+\frac{3}{2}+\frac{3}{2^2}+...+\frac{3}{2^9}\)

\(\Leftrightarrow2S=9+3+\frac{3}{2}+...+\frac{3}{2^8}\)

\(\Leftrightarrow2S-S=9-\frac{3}{2^9}\)

\(\Leftrightarrow S=9-\frac{3}{2^9}=\frac{4605}{512}\)

Vậy S = \(\frac{4605}{512}\)

S=3+3/2+3/2²+.....+3/2⁹

S=3.(1+1/2+1/2²+....+1/2⁹)

Đặt A=1+1/2+1/2²+......+1/2⁹)

Ta có:2A=2+1+1/2+....+1/2⁸

=>2A-A=(2+1+1/2+....+1/2⁸)-(1+1/2+1/2²+....+1/2⁹)

=>A=2-1/2⁹

Khi đó S=3.(2-1/2⁹)=6-3/2⁹=3069/512

cach giai luon nha

\

KHÔNG ĐƯA CÂU HỎI LINH TINH LÊN OLM NHÉ BẠN OK 

làm bài thi thì ko được hỏi bài nha bạn

,,,HỌC TỐT,,,,,

chúc bạn làm bài tốt nhưng mình không có . từ sau đừng đưa câu hỏi linh tinh lên olm.

ko đăng câu hỏi linh tinh

thi tốt nhé

học tốt

.........

nữ hoàng băng giá

A = 1/20 + 1/30 + 1/42 + 1/56 + 1/72 + 1/90 + 1/110 + 1/132
A = 1/4.5 + 1/5.6 + 1/6.7 + 1/7.8 + 1/8.9 + 1/9.10 + 1/10.11 + 1/11.12
A = 1/4 - 1/5 + 1/5 - 1/6 + 1/6 - 1/7 + 1/7 - 1/8 + 1/8 - 1/9 + 1/9 - 1/10 + 1/10 - 1/11 + 1/11 - 1/12
A = 1/4 - 1/12 (Cứ hai thằng cạnh nhau cộng lại bằng 0, chỉ còn thằng đầu và thằng cuối)
A = (3 - 1)/12
A = 2/12
A = 1/6

\(A=\dfrac{1}{5.6}+\dfrac{1}{6.7}+\dfrac{1}{7.8}+\dfrac{1}{8.9}+\dfrac{1}{9.10}+\dfrac{1}{10.11}+\dfrac{1}{11.12}\)

\(A=\dfrac{1}{5}-\dfrac{1}{6}+\dfrac{1}{6}-\dfrac{1}{7}+\dfrac{1}{7}-\dfrac{1}{8}+\dfrac{1}{8}-\dfrac{1}{9}+\dfrac{1}{9}-\dfrac{1}{10}+\dfrac{1}{10}-\dfrac{1}{11}+\dfrac{1}{11}-\dfrac{1}{12}\)\(A=\dfrac{1}{5}-\dfrac{1}{12}\)

\(A=\dfrac{12}{60}-\dfrac{5}{60}=\dfrac{7}{60}\)