Write about your new class this school year (15->20 lines)
 

cho tam giác ABC vuông tại A, D là trung điểm của AB, E đối xứng M qua D, F là trung điểm AM.Chúng minh:

a)AEBM là hình gì b)AB vuông góc BM c)E,F,C thẳng hàng

chứng minh rằng các biểu thức sau luôn có giá trị dương:
A=x^2-4x+18           B=x^2-x+2         C=x^2+2y^2-2xy-2y+15
Phần C hơi khó không làm cx đc :>
 

Câu 8: Cho tam giác MNP cân tại N, biết 2M - N = 20 độ Số đo góc N bằng

A.68 độ B.40 độ C.100 độ D.80 độ
trình bày bài giúp mik nha

I.          Choose the best one (A, B, C or D) to complete the sentences.

     1.  The children can read English,             ?

          A. can’t they          B. can they             C. they can             D. they can’t

     2.  Overcrowded places have a lot of problems,                     ?

          A. doesn’t it           B. have they           C. don’t they          D. does they

     3.  The immigrants will hardly find accommodation in the city,                       ?

          A. will it                B. won’t it             C. will they            D. won’t they

     4.  Disease spreads more quickly in overcrowded areas,                             ?

          A. doesn’t it           B. is it                    C. isn’t it                D. does it

     5.  Your brother’s here,                  ?

          A. is he                  B. are he                C. isn’t he              D. aren’t he

     6.  When                      people live in a small lace, life can be very difficult.

          A. too much           B. too many           C. a few                 D. few

     7.  Living in the country is healthier than that in the city because in the countryside, there is                    traffic.        

          A. more                 B. less                    C. Higher               D. fewer

     8.  Tom didn’t see her,                              ?

          A. did Tom            B. did he                C. do Tom             D. does he

     9.  Children in the slums have more diseases than                   in wealthy areas.

          A. those                 B. Ø                       C. them                  D. that

     10.          People move to the city with the hope that they can get                food and better healthcare.

          A. less                    B. fewer                 C. more                  D. bigger

0.    Mary and Jim/ can/ speak/ both English and French.

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1.    Peter/ live/ here/ for 5 years.

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2.    These shoes/ cost/ a lot of money.

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3.    You sisters/ look after/ your grandparents/ now.

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4.     I/ must/ go home/ now.

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