1. True

2. True

3. True

4. False

5.True

Do you need anything else? No, thanks.  

1. bad weather that we couldn't go out.

2. better brush your teeth at least twice a day.

3. more slowly and carefully than I do.

4. you adsentfrom class last Monday?

5. Ba from enjoy the milk.

6 fast is this car?

7. to driving on the left.

8. my teacher drives.

Students must do homework at home and must wear school uniform.

sporty

C. take part in

a) 3. \(\sqrt{\dfrac{1}{9}}\)+ \(\sqrt{25}\) - 2. \(\sqrt{4}\)

= 3. \(\dfrac{1}{3}\) + 5 - 2. 2

=   1 + 5 - 4

=       6   -  4

=           2

\(x-\dfrac{1}{2}\left(1-x\right)\) > 0

\(\Leftrightarrow x-\dfrac{1}{2}+\dfrac{x}{2}>0\)

\(\Leftrightarrow\dfrac{2.x}{2}-\dfrac{1}{2}+x>0\)

\(\Leftrightarrow2x-1+x>0\)

\(\Leftrightarrow\) \(3x>1\)

\(\Leftrightarrow x>\dfrac{1}{3}\)

Vậy để \(x-\dfrac{1}{2}\left(1-x\right)>0\) thì \(x>\dfrac{1}{3}\)

1. \(\dfrac{x}{5}\) = \(\dfrac{y}{4}\) và \(x^2\) + y =44

Áp dụng tính chất của dãy tỉ số bằng nhau:

\(\dfrac{x}{5}=\dfrac{y}{4}\) = \(\dfrac{x^2+y}{5^2+4}=\dfrac{44}{29}\)

\(\dfrac{x}{5}=\dfrac{44}{29}\) \(\Rightarrow\) x = \(5.\dfrac{44}{29}\) = \(\dfrac{189}{29}\)

\(\dfrac{y}{4}=\dfrac{44}{29}\Rightarrow x=4.\dfrac{44}{29}=\dfrac{160}{29}\)

Vậy x = \(\dfrac{189}{29}\) ; y = \(\dfrac{160}{29}\)

câu 1 ghi sai đề r bn ơi!!!