1. My school's name is Le Hong Phong.

2. My school is in An Khe town.

3. My school has 10 classes in my school.

4. They study many subjects.

5. My school has a large playgrouns and many beautiful flowers. Moreover, the teachers are very nice and helpful.

My school is Le Hong Phong school. It is in the city center of Hanoi. There are 40 classes. We have a lot of activities like sports and music. I like my school because i have many friends and kind teachers.

biểu đồ dạng đoạn thẳng

nnnb

vì trong túi có 19 viên bi cùng kích thuocs nhưng khác màu nhau nên có 19 kết quả có thể xảy ra cho hành động trên

8 viên bi màu đỏ --> có 8 kết quả thuận lợi cho biến cố trên

=> xác suất biến cố là: \(\dfrac{8}{19}\)

bài 1:

a) 2x=7+x

<=> 2x-x=7

=> x=7

b) \(\dfrac{x-3}{5}+\dfrac{1+2x}{3}=6\)

\(\dfrac{3\left(x-3\right)}{15}+\dfrac{5\left(1+2x\right)}{15}=\dfrac{6.15}{15}\)

\(3\left(x-3\right)+5\left(1+2x\right)=90\)

\(3x-9+5+10x=90\)

\(3x+10x=90+9-5\)

\(13x=94\)

\(x=\dfrac{94}{13}\)

đồ chơi,kính,áo

=8.000

có 39-5=34