聚会在4:00开始吗英语

设有x人
x个人每个人和其他（x-1）个人握手,每人觉得自己握了(x-1)次,一共x*(x-1)=(x^2-1)次
每个都算重复了一次,实际上握了(x^2-x)/2次
由(x^2-x)/2=10
得x^2-x-20=0,
(x-5)*(x+4)=0,
所以x=5或-4(舍)
答:共有5人.

i donot realize that the work of holding a party is so heavy

My mother has never held a birthday party.

They enjoyed themselves on the party yesterday.

hold a birthday party

a get-together after twenty years

irthday party

分析：1男 李 4次 甲4次 乙4次
女 李4次 甲女4次 乙女4次
2男 李 4次 甲4次 乙3次
女 李3次 甲女4次 乙女4次
3男 李 4次 甲4次 乙3次
女 李2次 甲女3次 乙女4次
4男 李 4次 甲1次 乙3次
女 李1次 甲女2次 乙女4次
可以说一个人最多握手4次,五个人都回答不一样,那就是李夫人和同一个人握了两次手,

如果你是我的妻子
楼主,我的对了,我做过这个题,老师讲过的,所以,把分分给我吧!

with whom are you going to the party?

5 3

答案D
A．（词语错用）
B．〈"他"究指张青呢还是王捷呢?可将其改为"张青")
C．（"和"应改为"而")"

酒精导致肝脏损伤,而脂类的代谢都在肝脏内进行.大量饮酒后厌食油腻食物,是人体的正常反应,这样有利于减轻肝脏负担...
导致肝脏负荷加大,引起酒精性肝损伤.

We have great fun dancing at the party.
What was the weather like last Sunday

【翻译】：Would he like to come to my birthday party on Sunday afternoon

Invitation
Dear Ruth,
Next Friday,September the fifth,is Tom's birthday.I thought it would be pleasant to have some of his friends here to help him celebrate.Will you come?We'll have dancing from nine until midnight,and then cut the birthday cake!
Both Tom and I are very eager to have you here,so don't disappoint us!
Affectionately yours,
Li Hua

设共有x人参加聚会,则就要和（x-1)人握手.（要和除去自己后的人握手,并且如果每个人都何处自己以外的所有人握手,那么就会重复,因此在所有人握手的次数下除以2,就是一份的次数了） 列得方程：x(x-1)/2=10 x方-x =20 x =5 答：有5人参加聚会.

1.看不见蓝天.太阳,喻之没有光明公理的状态.不见天日
2.指聚会,别离,欢乐,悲伤的种种遭遇.悲欢离合

用数学排列组合来算的话 9*8/2=36

设有x人
(x-1)*x/2=10（每人握x-1次手）
x^2-x-20=0
(x-5)(x+4)=0
x=5
所以一共有5个人
用字母代替5个人
AB、AC、AD、AE、BC、BD、BE、CD、CE、DE

陈豪在北京的ABC美国公司工作.他和美国同事Amy晚上要一起参加同事James的告别晚宴,由公司北京办事处主任戴维斯主持.(Office ambience)A：Chen Hao,you need to be prepared for a lot of toasting tonight.
C：Toasting?烤面包?A：No,I am talking about honoring someone at a meal or reception by raising a glass of wine,champagne or water and offering a few kind words about that person.
C：噢,你是说祝酒啊.西方人祝酒有什么规矩吗?A：There are two kinds of toasts.There is the informal toast that the host offers at the beginning of the meal to welcome his guests.
C：那是戴维斯的事吧.我们有什么要做的吗?A：Mr.Davis will stand,raise his glass and thank everyone for coming.He will take a sip of his wine.Then the guests,who remain seated,raise their glasses in response and take a sip.
C：就是说我们都不用站起来,只要举起杯,然后抿一口酒就行了.那另外一种呢?A：The other is more formal and comes near the end of the meal,usually during dessert.Champagne will be served.After each toast,everyone raises a glass and takes a sip of champagne.
C：是不是每个人都要说祝酒辞呢?A：Not necessarily,but you will be expected to toast James since you worked closely with him.
C：幸亏你事先告诉我.不过那我该说些什么呢?A：You could say how good James was to work with,tell a funny story about him,wish him success in his new position or use a favorite quote.
C：讲笑话是我的长项.不过我还是得赶紧去准备准备,一会餐厅见.******宴会结束后,陈豪和Amy一起搭出租车回家.A：Chen Hao,Your toast was excellent and you seemed completely at ease.You obviously practiced your remarks.
C：这可得谢谢你.还有啊,幸亏你特别提醒我每次只要抿一小口,我真没想到有这么多人祝酒,不然非喝醉了不可.A：It is acceptable etiquette to raise your water glass instead of the champagne flute.I usually just raise my glass to my lips so it appears that I am drinking when I am not.
C：怪不得,我还以为你酒量过人呢!不过Amy,我还有个问题.别人为他祝酒,James好像从来不举杯,也不喝.这样做会不会不礼貌?A：Not at all.That was correct etiquette.You never drink to yourself.Only to other people.
C：噢,所以被别人祝酒的人自己是不喝的.幸亏被祝酒的人不是我,否则我肯定会闹笑话.A：No you wouldn't.I would have warned you about that.

抽屉原理
0--9,一共10个数字
也就是说,如果按照不同的开头数字来分组
最多分成10组
现在有12个互相认识的人
不管怎么分,至少要有2个人分到同一组
所以必有两个认识的人,号码的开头数字相同.

M=(n-1)+(n-2)+...+2+1=n*(n-1)/2;如用组合公式算是C n 2
50人的聚会要握50*49/2=1225

Dear my frends,
How are you?I am gonging to hold a birthday party at 3:00 PM next sonday.Would you like to join us?You can take the 44th or the 304th bus to the Hunan road ,and go straight,turn right at the first corner.You will see the Garden Building and my home is right at 603.room.
yours Tom

I want to know if he willing to take part in my birthday party.

I want to have a birthday party at home,you can come?
I have many of the food

I have always wanted to you that I have everything.Today,I participated in the student's birthday party,to feel like the difference.I hate the feeling of,respectively,just hate to tell you the same separation.I will strive to be a good test of the University,next year I hope to have a happy holiday.

Hi Tom,what are you busy doing there?
-Preparing for my final math exam.I found these questions are too hard to answer.
-Good for you.You will get to know them very quickly.
-I hope so.
-Listen,it is Rose's birthday this Sunday.And I am preparing a surprise birthday party for her.Would you like to come that night?
-I hope I could.But you know,I will have the exam just on Monday!
-That's too bad.Can’t you have all these work done before Sunday?
-I guess not.But I will give it a try.
-All right.Hope to see you then.
-I'll call you before Sunday if I can make it.
-Ok,good luck with your exam!
-Thanks!

Does Tom have a birthday party every year?

It was my classmate’s birthday last Friday.He invited some of his classmates and me to his birthday party.I bought a book as (当作) a gift and took the subway to his home.It was 5:30 pm when I got there.Jack was very happy and he liked the gift very much.Then other classmates came.They also brought some gifts.At first we ate the birthday cake and drank cola.Then we sang and danced together.We really enjoyed ourselves very much.How happy we were at that time !

can you （be）（able）to my party tomorrow？

I'm very much honored to receive your invitation,but I'm unable to attend this party because of something personal.I'm really sorry for it.

6555

when is your brithday?oh,is **** ,it’s today !I’m very happy!happy brithday to you !

She is so busy that she refuses the invitation.Jim got up earlyso that he could catch the early bus.
Jim rose so early as to be in time for the early busPease,don't forget to bring her to the partyI'm gald to try our best to make anything ready for workHe can't see anything without glassesI make sure that you all know we should compele our homework by this saturday.Can you tell me how to reply to the answer?参考一下,有点出入,做这个也不容易.

为了不重复,我们把所有人编号
设总共有n个人
则第一个人和其他每个人握手,所以他握了n-1次
第二个人和剩下的人都握手,所以他又握了n-2次
……
以后每个人和剩下的人握手,每个少一次
到倒数第二个人,他只剩最后一个人没握手,所以他又握了1次
所以总共握手次数是1+2+3+……+(n-1)
因为10=1+2+3+4
所以4=n-1
n=5
所以总共有5个人参加

I hope to see my friend soon in my birthday party

4

楼上的答案正确但过程不是因为每人五次,二分之一×6×5×2,因为每个人需要与其他共5×2人握手,但握过一次之后,后一个人就不需要再与前一个人握手了.相当于每个人少了一半握手的次数 .即乘二分之一

I want to know how i can go to the party

答案是正确的.
你的改法不对,feel like 不加从句.
可以改为：I felt that I was a was a child at the party yesterday
feel like + n./ v.ing

1.She usually wears silk shirts .
2.They do not go to the movies .
3.We often make cakes for his birthday.
4.a box of chocolates .
5.birthday party .
6.a movie ticket.
7.Mary often go to.
8.He often go to the movies.
9.She does not like table tennis and basketball.

解题思路：圆锥的侧面积=底面周长×母线长÷2．

底面半径为9cm，则底面周长=18πcm，
∴需要纸板的面积=[1/2]×18π×36=324πcm²．
故答案为324π．

点评：
本题考点： 圆锥的计算．

考点点评： 本题考查了圆锥的计算，利用了圆的周长公式和扇形面积公式求解．

not only are the students but also Miss Zhang invited to the party.

解题思路：设有x人参加聚会，每个人需要和另外的（x-1）个人握手，所以共握手

x(x−1)

2

次，根据共握手次数=10为等量关系列出方程求出符合题意的解即可．

设有x人参加聚会，由题意可得：

x(x−1)
2=10，
整理，得x²-x-20=0，
解得x₁=5，x₂=-4（不合题意舍去）．
答：共有5人参加聚会．
故答案为：5．

点评：
本题考点： 一元二次方程的应用．

考点点评： 本题主要考查一元二次方程的应用，关键在于理解清楚题意，由共握手次数找出等量关系列出方程求解．

We are going to prepare a birthday party for her at home on Saturday,Dec.27th.

因为A握了4次,共有5个人
所以A和B,C,D,E握手了
因为B握了1次
所以B和A握了一次
到目前为止C和A,D和A也都握了一次
C还有两次且不能和A,B握
所以C和A,D,E握手了
D和A,C握手
那么E和A,C握手,握了两次

1.435 2.870
3.25
4.20%
5.a

时间象流水一样匆匆逝去，一转眼已经是2023年了。早上，我书桌上的电子钟发出了清脆的鸟叫声，提醒我该起床了。我起身关掉电子钟，换好衣服，坐在书桌前，打开笔记本电脑，查看一下我今天的日程。当我打开日程本时，...