知识大全 opportunity and success 急着用O(∩_∩)O谢谢

Posted 2022-07-12 加权平均数

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opportunity and suess 急着用O(∩_∩)O谢谢

Opportunities don\'t e often. They e every once in a while. Very often, they e quietly and go by without being noticed. Therefore ,it is advisable that you should value and treat them with care. When an opportunity es, it brings a promise but never realizes it on its own. If you want to achieve something or intend to fulfill one of your ambitious, you must work hard, make efforts and get prepared. Otherwise, you will take no advantage of opportunities when they e to visit you. The difference beeen a man who sueeds and one who does not lies only in the way each treats opportunities. The suessful person always makes adequate preparations to meet opportunities as they duly arrive. The unsuessful person, on the other hand, works little and just waits to see them pass by. In my opinion, there are plenty of opportunities for everyone in our society, but only those who are prepared adequately and qualified highly can make use of them to achieve their purpose.

让我入团吧，谢谢！

嗯，已通过。去电影区。

帮忙翻译下谢谢急！

额，这句话应该是论文摘要里的吧？
By emphasizing the author’s insist on the children-based view and the full use of the magic elements, this paper analyzes the influence which the Harry Potter has on the children\'s literature writing.

求12J003图集，谢谢

19200÷%115= 帮帮忙谢谢

是不是：19200÷115%=？（百分号哪有往前写的呀！）
如是这道题那就应该这样做：
19200÷1又20分之3
=19200÷23/20
=19200×20/23
=384000/23

way back into love吉他谱！谢谢！

GTP吉他谱请查收要用电脑查看附件记得采纳谢谢

萄字怎么组词？谢谢！

葡萄酒、
葡萄架、
癞葡萄、
葡萄灰、
葡萄宫、
蒲萄宫、
葡萄褐、
葡萄干、
野葡萄、
蒲萄酒、
蒲萄、
葡萄紫、
葡萄牙、
葡萄、
葡萄糖、

高一数学，谢谢

等腰直角三角形面积最大
设直角边为x
斜边=2-2x
x^2+x^2=(2-2x)^2
x^2-4x+2=0 (x<2)
x=2-√2
三角形面积=1/2*(2-√2)^2=3-2*√2

请帮忙吧。谢谢。

加权平均数的概念
加权平均数是不同比重数据的平均数，加权平均数就是把原始数据按照合理的比例来计算，
若 n个数中，x1出现f1次，x2出现f2次，…，xk出现fk次，那么(x1f1 + x2f2 + ... xkfk)/f1 + f2 + ... + fk 叫做x1，x2，…，xk的加权平均数。f1，f2，…，fk是x1，x2，…，xk的权.
“加权”就是考虑到不同变量在总体中的比例份额。
算术平均数就是计算这些数的平均数嘛~~
不考虑某个数出现的次数和比例问题！