100+100=? các bn giải nhanh mk tick cho hjhj mk đố cho vui mk lớp 6 nha!!ai lớp 6 thì kb mk nha
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25
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15
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30
8 tháng 1 2019
\(22x-1-2005x=30x+6-2007x\)
\(\Rightarrow22x-2005x-30x+2007x=6+1\)
\(\Rightarrow-6x=7\)
\(\Rightarrow x=\frac{-7}{6}\)
Vậy pt có nghiệm là \(\frac{-7}{6}\Leftrightarrow S=\left\{-\frac{7}{6}\right\}\)
T
9 tháng 1 2019
\(25y-2x+2xy=100\) (1)
\(\Leftrightarrow25y+2xy=100+2x\)
\(\Leftrightarrow y\left(2x+25\right)=100+2x\)
\(\Leftrightarrow y=\frac{100+2x}{2x+25}=\frac{100+2x+25-25}{2x+25}\)
\(=1+\frac{75}{2x+25}=\frac{74}{2x}+\frac{1}{25}=\frac{37}{x}+\frac{1}{25}\) (2)
Thay vào (1) suy ra PT \(\Leftrightarrow25\left(\frac{37}{x}+\frac{1}{25}\right)-2x+2x\left(\frac{37}{x}+\frac{1}{25}\right)=100\)
Giải phương trình trên được: \(x\approx16,4=\frac{82}{5}\)
Thay vào (2) suy ra \(y=\frac{37}{x}+\frac{1}{25}=\frac{37}{\frac{82}{5}}+\frac{1}{25}=\frac{4407}{2050}\)
*Mình lớp 7,có chi mong bạn thông cảm.
19 tháng 12 2017
A. LANGUAGE FORCUS. (4.5ms)
I. Multiple choice (2.0pts) Choose the correct answer: ( Chọn câu trả lời đúng )
Hi. My name is John. What’s__________name? -My name’s Lan.
A. my B. her C. his D. your
How many books does Ba___________? - He has eight.
A. have B. has C. to have D. having
Does Lan have Math on Tuesday? - No, she___________.
A. don’t B. doesn’t C. hasn’t D. haven’t
She ___________ her teeth every evening.A. brush B. to brush C. brushing D. brushes
What is she doing ? she __________ to musicA.listen B.listens C.is listening D.listening
He has breakfast _____ six o’clock. A. in B. at C. on D.for
My school is ________ to a hospital.A. near B. next C. beside D. between
Where is ________ school? - It’s in the country.A.Nams’ B. Nam C.the Nam’s D. Nam’s
II. Circle and Odd one out. (Khoanh tròn và loại ra một từ không cùng loại). 1.0pts
1. A. bike B. bus C. plane D. photo
2. A. beautiful B. big C. market D. noisy
3. A. train B. post office C. clinic D. supermarket
4. A. mother B. father C. brother D. doctor
III. Find the word which the underlined part is pronounced differently from the others.
(Chọn từ có phần gạch dưới phát âm khác các từ còn lại. (0,5pt)
a. house b. home c. hotel d. hour
a. truck b. bus c. ruler d. lunch
IV. Give the correct form of verbs in bracket. ( Chia hình thức đúng của các động từ trong ngoặc). (1.0pt)
They (be) ................... engineers.
She ( live ) ................... on Tran Phu street
Phong ( not/ listen).............................. to the music every day.
Look! Minh ( play ) ................... soccer.
B. READING: Read the passage
My name is Mai. I am a student at Thang Long School. It is in the country.
Every morning, I get up at five o’clock. I take a shower, have breakfast and go to
school at 6.30. I have classes from 7.00 to 11.15. At 12.00 I have lunch
at school. In the afternoon, I do the housework and play volleyball. In the evening,
I watch television or listen to music and do my homework. I go to bed at 10.30.
I. Choose True (T) or False (F): (1.0pt) (Chọn câu trả lời đúng (T) hoặc sai (T))
Statements
T/F
Mai is a student at Thang Long School.
Mai goes to school at half past six.
She does the housework and plays volleyball in the afternoon.
In the evening, she doesn’t watch television.
….…
….…
….…
….…
II. Answer the questions: (1,5 pts) (Trả lời câu hỏi)
On school days Thu gets up at six o’clock. She has breakfast at seven and she goes to school at seven thirty. She goes to school by bus. Thu has lunch in school withher friends.She leaves school at four in the afternoon and she walks home with her friends. She gets home at four thirty. She goes to bed at ten o’clock on school days. At the weekend, she watches TV in the evening and she goes to bed at eleven.
1.Thu gets up at_____ in the morningA. six o’clock B.seven o’clock C. four o’clock D. at ten o’clock
2.She goes to school _______ .A. by car B. by bus C. by bicycle D. on foot
3. On weekdays, she gets home at _________A.noon B. six thirty C. seven thirty D. four thirty
ĐỀ THỨ 2 NHÉ
I. Circle the word whose underlined, bold part is pronounced differently from the others (1p)
1- A. bus B. drugstore C. museum D. lunch
2- A. engineer B. between C. teeth D. greeting
3- A. read B. teacher C. eat D. breakfast
4- A. town B. down C. window D. shower
II. Circle the best words or phrases to complete the sentences (3ps)
5 - Hi, _______ name is Phong. I’m a student.
A. my B. his C. her D. our
6 - ________ do you live? I live on Tran Phu street.
A. What B. Where C. Who D. How
7 - What is _____? It is a schoolbag.
A. these B. those C. they D. this
8 - Every morning, Ba ______ up at six o’clock.
A. to get B. get C. gets D. is getting
9 - When do you have English? I have it ________ Monday and Thursday.
A. at B. on C. for D. in
10 - What time ____ you get up? I get up at five o’clock.
A. do B. does C. is D. are
11 - Are there any flowers to the left of your house? _____________.
A. Yes, there are B. Yes, there is
C. No, there isn’t D. Yes, they do
12 - I go to the __________ to send the letter.
A. supermarket B. zoo
C. post office D. bank
13 - Which sentence is correct?
A. Do your brother watches TV in the evening?
B. Is your brother watches TV in the evening?
C. Does your brother watches TV in the evening?
D. Does your brother watch TV in the evening?
14 - Which sentence is correct?
A. There is a flower garden to the left of the house.
B. There is a flowers garden to the left of the house.
C. There is a flower garden the left of the house.
D. There is a flower gardens to the left of the house.
15 - “ It’s 9:45 now.” means: ________________.
A. It’s nine past forty- five. B. It’s a quarter to ten
C. It’s forty- five nine D. It’s a quarter to nine.
16 - There/ big/ well/ front/ house/. (Chose the correct sentence)
A. There is big well in front of the house.
B. There are big wells in front of the house.
C. There is a big well in front of the house.
D. There are big well in front of the house.
III. Choose the words that are NOT correct. (0.5 p)
17 - Phuong lives in a apartment in town.
A B C D
18 - Ba brush his teeth every morning
A B C D
IV. Read the passage and do the tasks below:
Nga is twelve years old. She is in grade six, class 6A1. She lives in a house with her mother, father and sister. Their house is next to a bookstore. In the neighborhood, there is a hospital, a market and a stadium.
Nga's father is a doctor. He works in the hospital. Her mother works in the super market. Nga goes to school at six- thirty in the morning. She has classes from seven to eleven thirty.
IV. Read the passage and do the tasks below:
Nga is twelve years old. She is in grade six, class 6A1. She lives in a house with her mother, father and sister. Their house is next to a bookstore. In the neighborhood, there is a hospital, a market and a stadium. Nga's father is a doctor. He works in the hospital. Her mother works in the super market. Nga goes to school at six- thirty in the morning. She has classes from seven to eleven thirty.
1. Decide whether these statements are True (T) or False (F) (1p)
__________ 19 - There are four people in Nga's family.
__________ 20 - Nga's father works in the factory.
__________ 21 - Her mother works in the supermarket.
__________ 22 - Classes start at seven and finish at twelve.
2. Answer the questions (2ps)
23 - How old is Nga ?
->................................................................................................................
24 - What does her father do?
->................................................................................................................
25 - Is their house next to a hospital?
->................................................................................................................
26 - What time do her classes finish?
->................................................................................................................
V. Match the questions in column A with the answers in column B. (1.5ps)
| A | B | YOUR ANSWERS |
| 27. What is behind your house? | A. Yes, there is. | 27 -> |
| 28. Do boys watch television? | B. L-A-N | 28 -> |
| 29. Does Nam listen to music? | C. There are twenty. | 29 -> |
| 30. How many classes are there in your school? | D. No, they don't. | 30 -> |
| 31. Is there a book on the table? | E. Yes, he does. | 31 -> |
| 32. How do you spell your name? | F. The river. | 32 -> |
VI. Answer about you (1p)
33. How many students are there in your class?
->...............................................................................................................
34. How do you go to school?
->...............................................................................................................
\(100+100=200\)
Số đó là :
100 + 100 = 200
Đáp số : 200