Điền dấu >; < ; = vào chỗ trống: 

895=8.10^2+9.10^1+5.10^0

abc=a.10^2+b.10^1+c.10^0

Viết các số 28, 76, 54, 74 theo thứ tự:

b) Từ bé đến lớn:..............................................

có lẽ nhỏ này học lớp 1

ngu kinh

\(\Rightarrow\sqrt{5+\sqrt{x-1}}=6-x\left(x\le6\right)\)

\(\Rightarrow5+\sqrt{x-1}=36-12x+x^2\)

\(\Rightarrow x-1+\sqrt{x-1}-x^2+11x-30=0\)

Đặt \(a=\sqrt{x-1}\left(a\ge0\right)\)

\(\Rightarrow a^2+a-x^2+11x-30=0\)

Tính denta ra để tính a 

có a rồi thì tính x

Chọn đáp án đúng để hoàn thành bài văn sau.

We need calories or (1)…………………..to do the things every day. For example, when we walk to school or (2) ………………..a bike to school we spend a certain amount of (3)………….and even when we sleep, we also use them. But how many calorie should we (4) ………………a day to stay in shape? It’s difficult (5)…………………..us to calculate. If people want to keep (6) …………….., they should remember that everyone should have between 1600 and 2500 calories a day.

We get calories (7) …………….the food we eat. If we get too many food and don’t take part (8)………… any activities, we can get fat quickly. So besides studying, we should do some (9)………….., play sports or do the housework, such as cleaning the floor, cooking etc. Otherwise, we don’t eat enough, we will be (10)…………….and weak.

Điền vào số 5

A. for

 B. with

C. in