Translation grade three English composition, urgent! I don’think it‘sright for him do things like that.As students,We should study hard to get more kniwledge. So i think he should listen to the teachers carefully and take netes in class when he has any questions,he can put up his hand and ask the questions.Use his head as often as possible, and he'll understand what the teachers say.Afterclass , He should do his home work first go to bed as soon as he finishes it.Of course i hope he will not spend too much time playing computer games or other tjings, then he won't feel sieeeply in class any more. i'm sure he'll make some progress.

Translation grade three English composition, urgent! I don’think it‘sright for him do things like that.As students,We should study hard to get more kniwledge. So i think he should listen to the teachers carefully and take netes in class when he has any questions,he can put up his hand and ask the questions.Use his head as often as possible, and he'll understand what the teachers say.Afterclass , He should do his home work first go to bed as soon as he finishes it.Of course i hope he will not spend too much time playing computer games or other tjings, then he won't feel sieeeply in class any more. i'm sure he'll make some progress.

I think it's wrong for him to do such a thing. As students, we should study harder to acquire more knowledge. So I think he should listen to the teacher's lectures and take notes. When he has any questions, he can raise his hand to ask questions. He should try his best to use his brain, so that he can understand what the teacher is saying

English translation
You have heard of Webster Toys.Webster have made good,safe,interesting toys for more than a hundred years.Now ,we sell them,and children play with them,in countries from New Zealand to Norway and from Japan to Brazil.We are looking for someone to sell our toys in the
Far East.He or she,should be between the ages of thirty and forty.He should already have some years of selling experience in world markets.He should speak English well,and at least one other Far Eastern language.
The person we are looking for would live in Singapore and work in one office there,but he must travel for up to six months a year.He should know the Far East quite well.He should know how to sell in established markets and where to find new ones.He should understand money and make more than ever before,for himself and for Webster Toys.
Webster want someone who can stand on his own feet.If you think you are the person we are looking for,write to Mr.J.Sloman at our Head Office
This is our third grade reading question, I want to know Webster

Monotone increasing interval of function y = absolute value (x-1)

Y = absolute value (x-1) is equivalent to y = X-1 (x ≥ 1) or y = 1-x (x ≤ 1)
Y = X-1 (x ≥ 1) is an increasing function and y = 1-x (x ≤ 1) is a decreasing function
So the monotone increasing interval of y = absolute value (x-1) is (x ≥ 1), that is [1, + ∞)

Inverse function of y = - arctan (2x-1)
Can the conclusion - arctan (- x) = arctanx be used directly

It can be used directly
① Find the range
-π/2< arctan(2x-1)

Xiaoli is 13 years old and Xiaogang is 9 years old. When the sum of their ages is 40, how old are they?
Use arithmetic

Xiaoli: 13 + (40-13-9) / 2 = 22
Xiaogang: 9 + (40-13-9) / 2 = 18

It is known that f (x) is an even function on R, when x > = 0, f (x) = ln (x + 2) (1) when x = - 2), such that there is a real number T, for any x belonging to [M, 10], there is f (x + T) = 2ln|x + 3|

(1) if x0, then f (- x) = ln (- x + 2),
And f (x) is an even function, so f (- x) = f (x), which is obtained by substituting it into the above formula
When x

F (x) is an odd function on R,; f (x + 2) = - f (x), when x is greater than or equal to 0 and less than or equal to 1, f (x) = x, then f (7.5) =?
Tell me why
I just learned this. I don't understand many places

f（x+2）=-f（x）
So - f (x + 2) = f (x)
f(x+4)=f[(x+2)+2]=-f(x+2)=f(x)
f(7.5)=f(3.5+4)=f(3.5)=f(-0.5+4)=f(-0.5)
Odd function
So f (7.5) = - f (0.5)
0

Xiao Ming had to arrive at the school 1000 meters away from home before 7:50 every morning. One day, Xiao Ming started at the speed of 80 meters per minute. Xiao Ming's father found that he had forgotten to bring his Chinese book, so his father immediately chased Xiao Ming at the speed of 180 meters per minute and caught up with him on the way
Q: the result just now shows that dad caught up with Xiao Ming on the way. If he caught up with Xiao Ming at the school gate, how long will it take? What's the speed of dad at this time? Under what circumstances can he not catch up with Xiao Ming?

Catch up with Xiao Ming at the school gate:
Total time Xiaoming spent at school: 1000 / 80 = 12.5 (minutes)
So the time for Xiaoming's father to catch up with the school gate: 12.5-5 = 7.5 (minutes)
Dad's speed: 1000 / 7.5 = 133.33... (3 cycles) (M / min)
It is not clear under what circumstances:
It can be seen from the above that dad just caught up with Xiao Ming at the school gate at a speed of 133.33... M / min
That's when Dad's speed is less than 133.33... M / min

Let n-order real square matrix a not equal to o, and the adjoint matrix of a is equal to the transpose matrix of a, it is proved that a is invertible

From a * a = |a|e, a * = a '
A'a = | a | E
Let AIJ ≠ 0
Then compare a'a = | a | e, row J, column J elements have
a1j^2+a2j^2+...+aij^2+...+anj^2 = |A|
And a is a real square matrix and AIJ ≠ 0
So | a ≠ 0
So a is reversible

Is there a singular or plural number after "have no"?

Singular or plural is OK
I have no pens.I have no pen.
Have a nice weekend*^__ ^*