Húc Nhật Kỳ năm 1954 ?:)

1 . F

2 . F

3 . T

4 . F

5 . F

6 . F

7 . T

8 . T

9 . F

10 . T

1 . He isn't very popular. He has few friends .

2 . An is very busy. She has little free time .

3 . We must be quick. We have little time .

4 . The museum was very crowded there were too many people .

5 . Did you take many photographs when you nere on holiday .

6 . Most of the town is modern . There are few old building .

Đoán vậy :v

Tìm các số x , y , z biết :

a) x : y : z = 4 : 5 : 6 và x^2 -2y^2 + z^2 = 18

Tìm a , b , c biết rằng

a )\(\dfrac{a}{2}=\dfrac{b}{3};\dfrac{b}{5}=\dfrac{c}{4},a-b+c=-49\)

\frac{a}{2}=\frac{b}{3}=\frac{c}{4},a+2b-3c=-20

Bài 2 : Tìm a, b, c biết rằng : 

1 ) a : b : c : d = 2 : 3 : 4 : 5 và a + b + c + d = -42