1 How long do you live in HN

2 How often did you go to the movies

3 What did Mrs Robinson buy

4 When was your father in Nghe An

5 How do they go to school

6 Why didn't she go to class

7 Who left home at 7o'clock yesterday

8 What subject does he study in the high school

9 What is your favorite hobby

10 How far is it

cảm mơn nhìuu ạ:33

nghệ thuật so sánh ở đoạn "nhưng xu vẫn tiếp tục đổ ra như mưa"

a: \(A=3+3^2+\cdots+3^{2019}\)

=>\(3A=3^2+3^3+\ldots+3^{2020}\)

=>3A-A=\(3^2+3^3+\cdots+3^{2020}-3-3^2-\cdots-3^{2019}\)

=>2A=\(3^{2020}-3\)

=>2A+3=\(3^{2020}\)

=>\(3^{x}=3^{2020}\)

=>x=2020

b: ƯCLN(a;b)=5

=>a⋮5 và b⋮5

ab=300

mà a⋮5 và b⋮5

nên (a;b)∈{(5;60);(60;5);(10;30);(30;10);(15;20);(20;15)}

mà ƯCLN(a;b)=5

nên (a;b)∈{(5;60);(60;5);(15;20);(20;15)}

\(\left(2x+3\right)^3=\left(-25\right).\left(-5\right)\)

\(\Leftrightarrow\left(2x+3\right)^3=125\)

\(\Leftrightarrow\left(2x+3\right)^3=5^3\)

\(\Leftrightarrow2x+3=5\)

\(\Leftrightarrow2x=2\)

\(\Leftrightarrow x=1\)

\(\left(2x+3\right)^3=\left(-25\right).\left(-5\right)\)

\(\Leftrightarrow\left(2x+3\right)^3=5^3\)

\(\Leftrightarrow2x+3=5\)

\(\Leftrightarrow2x=2\)

\(\Leftrightarrow x=1\)

\(\Leftrightarrow x\left(y+1\right)+y+1=31\\ \Leftrightarrow\left(x+1\right)\left(y+1\right)=31=31\cdot1\)

\(TH_1:\left\{{}\begin{matrix}x+1=31\\y+1=1\end{matrix}\right.\Leftrightarrow\left\{{}\begin{matrix}x=30\\y=0\end{matrix}\right.\rightarrow\left(30;0\right)\\ TH_2:\left\{{}\begin{matrix}x+1=1\\y+1=31\end{matrix}\right.\Leftrightarrow\left\{{}\begin{matrix}x=0\\y=30\end{matrix}\right.\rightarrow\left(0;30\right)\)

Vậy \(\left(x;y\right)\in\left\{\left(30;0\right);\left(0;30\right)\right\}\)

\(\Leftrightarrow xy+x+y+1=31\Leftrightarrow\left(x+1\right)\left(y+1\right)=31\)

Do x, y nguyên dương nên xảy ra các TH sau:

TH1: \(\left\{{}\begin{matrix}x+1=1\\y+1=31\end{matrix}\right.\)\(\Leftrightarrow\left\{{}\begin{matrix}x=0\\y=30\end{matrix}\right.\)(LOẠI)

TH2:\(\left\{{}\begin{matrix}x+1=31\\y+1=1\end{matrix}\right.\)\(\Leftrightarrow\left\{{}\begin{matrix}x=30\\y=0\end{matrix}\right.\)(LOẠI)

Vậy không có x, y nguyên dương thoả mãn đề bài.

25) How can strong earthquakes affect land features? Strong earthquakes can cause the ground to crack or shift, create landslides, trigger tsunamis, and permanently raise or lower sections of the Earth's crust (uplift and subsidence).

26) Explain what happens when locked slabs break free. When locked tectonic slabs suddenly break free, the stored elastic energy is released as seismic waves, causing the ground to shake (an earthquake).

27) What can cause weathering? Weathering is caused by physical forces (like ice wedging, plant roots, and temperature changes) and chemical processes (like water reacting with minerals, acid rain, or oxidation).

28) How does erosion shape and change the land? Erosion picks up and moves weathered rock and soil to new locations. This process wears down mountains, carves out valleys and canyons, and creates new landforms like deltas through deposition.

29) How does gravity cause erosion? Gravity acts as a direct force that pulls rocks, soil, and debris downward, leading to mass movements such as landslides, mudslides, rockfalls, and soil creep.

- Kinh tuyến là các đường nối liền hai điểm cực Bắc và Nam

- Vĩ tuyến là các vòng tròn bao quanh quả Địa Cầu, song song với đường xích đạo

- Kinh tuyến Đông là kinh tuyến nằm bên phải kinh tuyến gốc

- Kinh tuyến Tây là kinh tuyến nằm bên trái kinh tuyến gốc

- Vĩ tuyến Bắc là vĩ tuyến nằm từ xích đạo đến cực Bắc

- Vĩ tuyến Nam là vĩ tuyến nằm từ xích đạo đến cực Nam

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