244

=74km²0,9hm²

là Nguyễn Ngọc Kí(k cho mình nha)

nguyển ngọc ký

nhầm nha nguyển hiền

a) \(\dfrac{3}{4}+\dfrac{9}{5}\div\dfrac{3}{2}-1=\dfrac{3}{4}+\dfrac{18}{15}-1=\dfrac{39}{20}-1=\dfrac{19}{20}\)

b) \(\dfrac{6}{7}\cdot\dfrac{8}{13}+\dfrac{6}{13}\cdot\dfrac{9}{7}-\dfrac{4}{13}\cdot\dfrac{6}{7}=\dfrac{48}{91}+\dfrac{54}{91}-\dfrac{24}{91}=\dfrac{48+51-24}{91}=\dfrac{78}{91}=\dfrac{6}{7}\)

c) \(\dfrac{-3}{7}+\left(\dfrac{3}{-7}-\dfrac{3}{-5}\right)\)\(=\dfrac{-3}{7}+\left(\dfrac{-3}{7}-\dfrac{-3}{5}\right)=\dfrac{-3}{7}+\dfrac{6}{35}=-\dfrac{9}{35}\)

3. are there any eggs?-No, there aren't some

4.is there any salt?- yes, there is any

5.are there any carrots?-yes, there are some

6.are there any apples?-no there aren't some

7.is there any suger?-yes, there is any

8.are there any cakes?-no there aren't some

9.is there any butter?-no. there isn't any

10. is there any mineral water?- yes. there is any

1 choice

2 organisers

3 artical

4 heat

5 shortage

a d b b a a c

1 A

2 D

3 B

4 B

5 A

6 A

7 C

1 A.

2. D.

3. B.

4. B.

5. A.

6. A.

7. C.

Susan said that everyday she was teased and bullied and didn't know what to do.

Quan told me he was having a really hard time getting along with his parents.

Mai asked her mother if she needed a tutor when she got so much trouble in maths.

1 Susan said everyday she was teased and bullied and she didn't know what to do

2 Quan told me he was having a really hard time getting along with his parents

3 Mai asked her mother if she needed a tutor when she got so much trouble in math