Bài 5:

a: Diện tích mảnh vườn là:

\(60\cdot60\cdot\dfrac{2}{3}=2400\left(m^2\right)\)

b: Diện tích phần trồng hoa là:

\(240:\dfrac{3}{5}=400\left(m^2\right)\)

c: Diện tích trồng hoa bằng:

\(\dfrac{400}{2400-400}=\dfrac{400}{2000}=20\%\)

PTHH: \(FeO+2HCl\rightarrow FeCl_2+H_2O\)

Ta có: \(n_{FeCl_2}=0,2\cdot0,6=0,12\left(mol\right)=n_{FeO}\) \(\Rightarrow m_{FeO}=0,12\cdot72=8,64\left(g\right)\)

Gọi số học sinh là a

a chia hết cho 10

a chia hết cho 12 

a chia hết cho 15

=> a thuộc BC(10;12;15)

=> BCNN (10;12;15)=2².3.5=60

=> BC(10;12;15)= (0;60;120;180;...)

mà 100 <a<150

=> x=120

vậy hs khối 6 là 120 em

CHÚC BẠN HỌC GIỎI

TK MÌNH NHÉ

thầy cô như là vì sao

lấp la lấp lánh như tiên trên trời

thầy như là đóa hoa cành mới trưa

cô là nụ hồng ban mai

đưa em vào lớp ,giảng bài cho em

cô là mẹ hiền của em

cho em kiến thức mai sau dựng đời

cô là tất cả của em

đưa từng nét chữ thật đều

em yêu cô lắm cô ơi

em sẽ cố gắng cô ơi

mai sau em sẽ báo cô suốt đời

(16x8x10)-(12x8x5)=800cm3

mFe =11,2g

Men and women are a gender discrimination ideology that considers men more important than women. This was a thought system that existed in many parts of the world, especially under the feudal regime. Although women's rights are now recognized, the feminist ideology system is still in some countries, especially attached to religious ideas. In other regions, many people still carry this idea at different levels.

Vietnam is a country strongly influenced by feudal and Confucian ideology. It is rooted in many generations of life. There are sentences that "Most men write and write a woman" with the meaning of "a son is there but ten daughters are still not", demonstrating how to judge a son or woman in Confucianism. Accordingly, families or lineages from the past (and even today) still have the thought of attaching importance to the birth of a son. Without a descendant grandchildren is still considered to be great and when the parents or grandparents die, there will be no people and places of worship. So most families still have to try to give birth to a son. In addition to the positive aspects of moral education, the idea of ​​male and female disrespect is no longer appropriate.

In the old society and today, the majority of women and girls are disadvantaged, many very well-off families have dozens of rooms but when married, they must live with their parents-in-law and siblings in the same room. narrow. My biological parents have no money to buy my own house because that's my husband's job, and my brother and my brother's brother leave so I don't have to worry ...

In terms of supporting parents, she and her younger sister often spend more time caring than him and her younger brother because their daughters always feel affectionate, filial to their parents, and more sons and daughters catch their parents. repaying the debt, everyone just said: "Birth of a son who is miserable, dead of joy; The old people said that after the loss, the soul of the full moon and the first day, the New Year, the death anniversary ... could only go to his son's house, and the house of the daughter who worshiped the inner side could not enter. Therefore, even though boys are still damaged, they are considered important, this is a negative point of view, needs to be renewed and reviewed in a way that is more appropriate.

Besides the majority, there are families with very innovative ideas: every child is the same, they are loved and cared for the same way, showing fairness. Daughters married poor are ready to live in the bridegroom or buy apartments to live in, as long as their daughter is happy. So is the son who gets married, equally inherited. These are people who know far-sighted and understand life.

Many families do not have sons and daughters who love their parents and should keep worshiping their parents 50% on the altar, or make a separate altar next to them, which many people carry heavy feudal thoughts. The project said that: immoral, verbal abuse of a cowardly son forced by his wife, afraid of his neighbors to assess and affect the happiness of many families, but what is wrong, morality teaches people to treat With each other humanity, every parent is equal to prohibit the daughter from worshiping.It is because of heavy thoughts that many grandparents force their children to give birth to a grandson and wife to give birth to 3 or 4 girls, otherwise they will be considered unfamiliar, this case is not rare. The old feudal ideologies if not liberated from it live very tightly, always afraid of being evaluated, detracting - the cause of broken happiness of so many families just because they love things for themselves where to go Being confident, overcoming it is very comfortable, all just towards a good life for yourself and your descendants, Boys or Girls are all your children and not necessarily have to give birth to a boy. . The ideology of lost men and women should be changed, so that men and women are equal in today's society.