b a c c c c c a d d d b b c a b

B.     3.A.    4.C  5.C.   6.C

7.C.     8.C.   9.A.   10.D

11.D.    12.D.   13.B.  14.B

15.C.   16.A.   17.D

Mình ko bt đúng hay sai nên mong bạn thông cảm

bạn đang kiểm tra à?

Help me, Pls

1 D

2 B

3 D

4 A

5 D

6 D

7 D

8 A

9 D

Bài 2

1 A

2 B

3 D

4 D

5 C

6 C

7 B

8 A

D - B - A - A - D - D - C - A - D 
A - B - B - D - C - B - B - C 

Áp dụng tính chất của dãy tỉ số bằng nhau, ta được:

\(\dfrac{a}{\dfrac{1}{3}}=\dfrac{b}{\dfrac{1}{5}}=\dfrac{c}{\dfrac{1}{6}}=\dfrac{a-c}{\dfrac{1}{3}-\dfrac{1}{6}}=\dfrac{10}{\dfrac{1}{6}}=60\)

Do đó: a=20; b=12; c=10

a: Xét ΔBAD và ΔBED có 

BA=BE

\(\widehat{ABD}=\widehat{EBD}\)

BD chung

Do đó: ΔBAD=ΔBED

1 How many eggs are we having now

2 The picture in our room is not different from the picture in her room

3 Has she ever read Kieu Story?

4 Nam and Ba have English three times a week

19 Because Nam did not work hard, he didn't get good marks

20 The photograph is not as big as the painting