Hãy nhập câu hỏi của bạn vào đây, nếu là tài khoản VIP, bạn sẽ được ưu tiên trả lời.
Phong Thien k phải ý Hồng Phúc Nguyễn nói bn là bên này học tiếng anh, bn nên đăng sang toán....
a: =-5/7(2/11+9/11)+12/7
=12/7-5/7
=7/7=1
b: \(=\dfrac{-12}{56}+\dfrac{35}{56}-\dfrac{28}{56}=\dfrac{-5}{56}\)
c: \(=\dfrac{1}{4}-\dfrac{5}{13}+\dfrac{2}{11}-\dfrac{8}{13}+\dfrac{3}{4}\)
=1-1+2/11
=2/11
d: \(=\dfrac{21}{31}+\dfrac{-16}{7}+\dfrac{44}{53}+\dfrac{10}{31}+\dfrac{9}{53}\)
=1+1-16/7
=-2/7
e: \(=\dfrac{\dfrac{4}{36}-\dfrac{30}{36}-\dfrac{144}{36}}{\dfrac{21}{36}-\dfrac{1}{36}-\dfrac{360}{36}}=\dfrac{-160}{-340}=\dfrac{8}{17}\)
3 k lun
THÕA MÃN ĐK LÀ:\(n-3\ne0\Rightarrow n\ne3\)
\(5-n\ne0\Rightarrow n\ne5\)
Exercise1: Find the word which has a different sound in the underlined part
1. A.hear B.fear C.dear D.wear
2. A.near B.appear C.bear D.idea
3. A.fear B.smear C.bear D.weary
4. A.area B.year C.parents D.prepare
4. A.swear B.period C.here D.pierce
Exercise2: Make question for the words
1. My father was in Hà Nội last month.
→→ when was your father last month?
2. He travelled Nha Trang by coach.
→→.how did he travel to Nha Trang?
3. She went to the doctor because she was sick.
→→.why did she go to the doctor?
4. Nam left home at 7 o'clock yesterday.
→when did Nam leave home yeasterday?
5.Her mother gave her a blue dress.
→what did her mother give her?
6. I went to Nha Trang last summer vacation.
→.where did you go last summer vacation?
7. Mrs Robinson put the poster on the wall.
→where does MRs.Robinson put the poster?
8. Theu returned to America two weeks ago.
→when did they return to America?
Exercise1: Find the word which has a different sound in the underlined part
1. A.hear B.fear C.dear D.wear
2. A.near B.appear C.bear D.idea
3. A.fear B.smear C.bear D.weary
4. A.area B.year C.parents D.prepare
4. A.swear B.period C.here D.pierce
Exercise2: Make question for the words
1. My father was in Hà Nội last month.
→ Where was your father last month?
2. He travelled Nha Trang by coach.
→How did he travel to Nha Trang?
3. She went to the doctor because she was sick.
→Why did she go to the doctor?
4. Nam left home at 7 o'clock yesterday.
→What time did Nam left home yesterday?
5.Her mother gave her a blue dress.
→What did her mother give her?
6. I went to Nha Trang last summer vacation.
→When did you go to Nha Trang?
7. Mrs Robinson put the poster on the wall.
→Where did Mrs Robinson put the psoter?
8. They returned to America two weeks ago.
→When did they return to America?
Lesson 1: A school with 1200 students. The number of students with average academic performance is 5858, total number of students is 1313, the rest are good students. Calculate the number of students in this school.
Lesson 2: A rectangular garden of length 14121412 m, width 3535 in length. Calculation of the perimeter and area of the garden.
Lesson 3: A team of workers must plant 3 crops. In the first stage, 1313 plants were planted. The second crop 3737 planted the remaining trees. Session 3 planted 160 plants. Calculates the total number of trees the team must plant.
Exercise 4: Give two circles (O; 4cm) and (O '; 2cm) such that the distance between two centers O and O' is 5cm. Circle O (O; 4cm) cut OO 'at point A and circle O (O 2) cut OO at B.
A, Calculate O'A, BO, AB
B, Prove that A is the midpoint of the segment O'B?
Lesson 5: When paying for a book at the right price; Hung is refunded 15,000 VND, because of the 105% promotion. So how much did Hung buy that book?
Kết quả là 0,18 nhé bạn
Mình cần đáp án bạn ơi
nhầm mình cần cách làm