Translation of English book P22 page 3a in Grade 9

A few days ago, my friend and I talked about the rules of our school. In our school, we have to wear school uniforms every day. The problem is that all my classmates think school uniforms are ugly. We think young people should look pretty and read books so that we want to wear our own clothes, If we can't do that, we should be allowed to design our own school uniforms. That would be a good way to make both teachers and classmates happy. It might also be a good way for parents to allow their children to study in groups with their classmates at night. I know we are noisy sometimes, But we have learned a lot from each other. We also think that if it should be longer, the current vacation is too short. A longer vacation will give us time to do things like volunteer. Last summer I had an opportunity to volunteer in the local hospital, but I can't go because I have to go back to school. That might be a good experience for me, because I want to be a doctor when I grow up
1. What do the students in this article think about school uniform?
2. What kind of clothes do they want to wear?
3. How do they like to learn?
4. What do they think of the holiday?
5. Why is volunteering good?

Unit 5 Section B 3A translation

If I become an athlete,will I be happy?For many young people,becoming a professional athlete might seem like a dream job.If you become a professional athlete,you'll be able to make a living doing some...

English translation

At 9:00 yesterday morning, bus No.26 was passing by Zhonghua park. The driver saw an old man lying on the side of the road, and a woman came to ask for help

A triangle glass, the bottom is 12.5dm, the height is 7.8dm, the price per square meter is 68 yuan, buy this glass to use how many yuan?

12.5 × 7.8 △ 2 △ 100 × 68, = 97.5 △ 2 △ 100 × 68, = 48.75 △ 100 × 68, = 33.15 yuan; answer: it costs 33.15 yuan to buy this glass

-What is the number of 1 / 2, 1 / 4 - 1 / 6, 1 / 8, 2013

-1 / 2, 1 / 4 - 1 / 6, 1 / 8, 2013 is - 1 / 4026

If the perimeter of an isosceles triangle is 10 cm, then the functional relationship between the base length y (CM) and the waist length x (CM) and the value range of the independent variable are correct ()
A. Y = - 2x (0 < x < 5) B. y = 10-2x (2.5 < x < 5) C. y = 10-x (x is all real numbers) d. y = 10-x (x > 0)

According to the meaning of the question, y = 10-2x, and 2x ＞ 10 − 2x10 − 2x ＞ 0, the solution is: 2.5 ＜ x ＜ 5

Let a, B, C be positive numbers, a + B + C = 1, and prove: ① 1 / (a + b) + 1 / (B + C) + 1 / (a + C) ≥ 9 / 2, ② (1 / A-1) (1 / B-1) (1 / C-1) ≥ 8
It's going to be proved by scaling

【1】 It is simple to prove by Cauchy's inequality. [2] ∵ a, B, C ＞ 0. From the basic inequality, we can know: a + B ≥ 2 √ (AB), B + C ≥ 2 √ (BC), C + a ≥ 2 √ (CA). By multiplying the three formulas, we can get: (a + b) (B + C) (c + a) ≥ 8abc. = = = = = > [(a + b) / C] [(B + C) / a] [(c + a) / b] ≥ 8. = = = = = > [(1-C) / C] [(1 -

It is known that in trapezoidal ABCD, AD / / BD intersects o, and the area of triangle AOB is equal to 21cm square

The title should be:
In trapezoidal ABCD, ad ∥ BC, diagonal AC and BD intersect at point O. if the area of △ AOB is equal to 21, then the area of △ cod
Because ad ‖ BC
So, s △ abd = s △ ACD
Therefore, s △ cod = s △ AOB = 21

Given that the third term of [x + x ^ (lgx)] ^ 5 expansion is 10 ^ 6, find X
RT~

The third term in [x + x ^ (lgx)] ^ 5 expansion is
C5(3)*x^3*x^(2lgx)=10^6
x^(3+2lgx)=10^6/C5(3)=10^5
Take the logarithm of 10 as the base
(3+2lgx)lgx=5
(2lgx+5)(lgx-1)=0
lgx1=-5/2,x1=10^(-5/2)
lgx2=1,x2=10

There is a rope and a bamboo pole. The rope is 4 meters longer than the bamboo pole. After the rope is folded in half, it is 4 meters shorter than the bamboo pole. How long is the bamboo pole? How long is the rope?

Rope 16 pole 8

Translation of English book P22 page 3a in Grade 9