17. When did Nam leave home yesterday?

18. How long has he taught English in the high school?

19. How was the homework yesterday?

20. When does she often do the housework?

21. How many roses they're planting in the garden?

22. Who will Liz send these letters to?

23. What's your favourite subject?

24. Do we have magazines and newspapers?

25. What do you often do in your free time?

26. Is he good at drawing?

27. What does she learn in computer science class about?

28. What's your mother do at the moment?

29. What sport does Lan like?

30. How often do you go to the movies?

17)When did Nam leave home yesterday

18)How long has he taught English

19)How was the homework yesterday

20)When does she often do homework

21)How much roeses are they planting in the garden

22)Who will Liz send these letter

23)What subject do you like

24)Do you have any magazines and newspapers

25)What often do you do in your free time?

26)Is he good at drawing?

27)What she learn about in science class?

28)What is your mother doing at the moment

29)What sport does lan like best?

30)how often do you go to the movie

đầu bài là gì vậy bạn để mk biết đường làm

8,where is the bank?
9, how is the dress?
10, when did you see her?
13, who bought a poster

Áp dụng tỉ số lượng giác của góc nhọn vào \(\Delta MHP\), ta có:

\(\cos30\text{°}=\dfrac{MH}{8}\Rightarrow MH=8.\cos30\text{°}=4\sqrt{3}\left(cm\right)\)

Mặt khác, \(\text{∠}MNP=90\text{°}-30\text{°}=60\text{°}\)

Áp dụng tí số lượng giác của góc nhọn vào \(\Delta MHN\), ta có:

\(\tan60\text{°}=\dfrac{4\sqrt{3}}{NH}\Rightarrow NH=4\sqrt{3}.\tan60\text{°}=12\left(cm\right)\)

Lời giải:

Xét tam giác $MHP$ vuông tại $H$ thì:

$\frac{MH}{MP}=\sin P=\sin 30^0=\frac{1}{2}$

$\Rightarrow MH=\frac{MP}{2}=4$ (cm)

Theo định lý Pitago:

$HP=\sqrt{MP^2-MH^2}=\sqrt{8^2-4^2}=4\sqrt{3}$

Theo hệ thức lượng trong tam giác vuông:

$MH^2=NH.HP$

$\Leftrightarrow 4^2=4\sqrt{3}.NH$

$\Leftrightarrow NH=\frac{4\sqrt{3}}{3}$ (cm)

mik khoanh đỏ x, y, z rồi nhé:v

1.supernatural

2.spirit

3.candles

4. theme

5.evil

6.graveyard

7.costumes

1 supernatural

2 spirit

3 candles

4 theme

5 evil

6 graveyard

7 costumes