1. My name is Alex.
2. A-L-E-X.
3. I'm 13 years old.
4. I live in a small town.
5. I work as a teacher.
6. Yes, I enjoy studying English because it opens up opportunities for communication.
7. I've been learning English for about five years.
8. I usually take the bus to school.
9. It takes me about 30 minutes to get to school.
10. My best friend's name is Sarah, and we've known each other since childhood.
11. I have a small family – my parents and a younger sister.
12. I enjoy reading, hiking, and playing guitar.
13. In my free time, I like to watch movies and explore new places.
14. I've visited major cities like New York and Los Angeles.
15. After school, I plan to pursue a career in computer science.

làm giúp em câu 6

câu 6 

a/

y x 0 d 2 -2/3 d' 6 6 A B N 4 2

b/

Hoành độ điểm N là nghiệm của PT

\(3x+2=-x+6\Leftrightarrow x=2\) Thay vào d'

\(\Rightarrow y=-2+6=4\)

\(\Rightarrow N\left(2;4\right)\)

c/

\(\tan\alpha=\dfrac{4}{2+\dfrac{2}{3}}=\dfrac{3}{2}\)

d/

Tam bội (3n): 3n=36 NST

Tứ bội (4n): 4n=48 NST

Lục bội (6n): 6n=72 NST

Cửu bội (9n): 9n=108 NST

Thập nhị bội (12n): 12n= 144 NST

Tam nhiễm (2n+1): 2n+1= 25 NST

Một nhiễm (2n-1): 2n-1 = 23 NST

Câu 2.

Nhiệt lượng bếp tỏa ra trong thời gian \(t=3min=180s\) là:

\(Q=UIt=RI^2t=60\cdot2,5^2\cdot180=675000J\)

Câu 3.

\(I_{Đ1}=\dfrac{U_{Đ1}}{R_{Đ1}}=\dfrac{6}{6}=1A\)

\(I_{Đ2}=\dfrac{U_{Đ2}}{R_{Đ2}}=\dfrac{1,5}{8}=\dfrac{3}{16}A\)

\(I_b=I_{Đ1}-I_{Đ2}=1-\dfrac{3}{16}=\dfrac{13}{16}A\)

\(R_b=\dfrac{U_b}{I_b}=\dfrac{1,5}{\dfrac{13}{16}}=\dfrac{24}{13}\Omega\)

tóm tắt
R=60Ω

I=2,5 A

t = 3 phút = 180s 

                            Giải 

Nhiệt lượng do bếp tỏa ra  trong 3 phút là

Q= R.I².t = 60 . (2,5)² .180 =67500 J

beacause she studied hard , she got grade A for listening .

Because she studied hard, she got grade A for listening