This is my 10,1 homework.,Please help answer it.,Give 20 points for a question.。。

You have to use your brain diligently, and you can't rely on the computer.

In the southwest of Shandong, there is a county seat called Cao County, where there is a flat river, green trees, heroes, and talents......Historically, the men here have been witty, brave, optimistic, generous, handsome, kind, loyal, ......

With their handsome appearance, kind heart, unyielding temperament, and loyal temperament, Cao County men have conquered women in the north and south of the river, on both sides of the Yellow River, inside and outside the Great Wall, and more and more women will bow down under the jeans of Cao County men. As a new generation of Cao County people, we shoulder the heavy responsibility of showing the charm of Cao County men, we must live up to our mission, carry forward the past and forge ahead into the future, reform and innovation, and rush out of Asia and to the world!

It is often said that southern men have delicate personalities and take care of women, but their figures seem to lack a bit of manhood; The men of the north are tall and powerful, full of masculinity, but they do not know how to listen to the hearts of women. The Cao County man in Heze, Shandong Province discarded the dross, took its essence, gathered the image of a perfect man, and embodied the charm of a standard good man to the fullest.

If you don't have a boyfriend yet, then you have to hurry up and find a boyfriend in Cao County. Among the many Cao County men, there is always one that will suit you!

If you have a boyfriend but are not from Cao County, you can ask him to break up without hesitation; If your current boyfriend is from Cao County, then while you are glad that you got a sought-after item, shouldn't you also be vigilant and be careful of being dug into the corner.

The best man in the world is in China, and the best man in China is in Cao County!

Don't marry during the festival this year, marry only Cao County, Oye! The people of Cao County and everyone on the earth knows, do you know?!

We are all from Cao County! At the request of the majority of female compatriots at home and abroad, on the occasion of the 60th anniversary of the founding of the People's Republic of China, and in response to the national reform and opening up policy, the good boys of Cao County will be shown around the world in the near future, so as to achieve the goal of Cao County boys going out of China and becoming popular all over the world! Let every female friend have a good husband who is satisfied, and let what extramarital affairs, love triangles, and all kinds of family disputes be eliminated as soon as possible!

Let every woman feel happy and proud because of marrying a good man in Cao County, and let us work together to build a harmonious and happy Chinese socialist society! If you want to marry, marry a good man in Cao County, are you married when you are lonely? Postscript - As a Cao County boy, I feel very honored and proud, and I hope that the majority of Cao County boys will continue to carry forward the advantages of our Cao County boys!

It can be supplemented as follows and then answered.

l 2 3 ··21···51)··

The two lines are connected together to form a series of equal differences with the first term 0 and the tolerance of 4, and the formula for the general term is:

an=a1 ten(n-1)d,a21=0+(21-1)x4=20x4=80;

an=0 ten(n-1)x4=200, n-1=50, n=51, fill 51 from above, and fill 80 from below.

10。The relationship between the number of squares and the number of right triangles is:

4x (number of squares - 1) = number of triangles.

Fill in the form: Number of squares 2 3 ...21 ..51) Number of right triangles 4 8 ...80) .200

(12) The cube edge length x

6x²=a²

x=√6a/6

Ball radius = 3(6a)6

√2as=4×π(2a)²

s=½πa²

If it's a company that's really starting out, it's impossible to be so down! I wouldn't have built such a big silhouette! So it is advisable for you to leave early! Go to a company that has a real future!

After simplification, it is a proportional series, high school knowledge. = The result is 2 to the power of 16.