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12 tháng 8 2022

4 + 5 = 9 

12 tháng 8 2022

9 nha

28 tháng 1 2016

1 giờ = 60 phút  

=>  6/5 giờ = 60:5x6=72 phút=1 giờ 12 phút

18 /5 giờ =60:5x18=216 phút= 3 giờ 36 phút

5/4 giờ =60:4x5=75 phút = 1 giờ 15 phút .

Tick nhé nguyen ha trang

 

c)

ĐKXĐ: \(x\notin\left\{1;-3\right\}\)

Ta có: \(\dfrac{2x-1}{x-1}-\dfrac{2x+5}{x+3}=\dfrac{4}{\left(x-1\right)\left(x+3\right)}\)

\(\Leftrightarrow\dfrac{\left(2x-1\right)\left(x+3\right)}{\left(x-1\right)\left(x+3\right)}-\dfrac{\left(2x+5\right)\left(x-1\right)}{\left(x+3\right)\left(x-1\right)}=\dfrac{4}{\left(x-1\right)\left(x+3\right)}\)

\(\Leftrightarrow\dfrac{2x^2+6x-x-3}{\left(x-1\right)\left(x+3\right)}-\dfrac{2x^2-2x+5x-5}{\left(x+3\right)\left(x-1\right)}=\dfrac{4}{\left(x-1\right)\left(x+3\right)}\)

Suy ra: \(2x^2+5x-3-2x^2-3x+5=4\)

\(\Leftrightarrow2x+2=4\)

\(\Leftrightarrow2x=2\)

hay x=1(loại)

Vậy: \(S=\varnothing\)

13 tháng 6 2018

Bµi 4:KÕt hîp 1 c©u hái ë cét A víi 1 c©u tr¶ lêi ë cét B cho phï hîp (1,5®iÓm) A B Tr¶ lêi

1. They rarely watch ........................... a. to school ?

1_D_

2. Why do you want .......................... b. in my class.

2_E_

3. There are twenty girls.................... c. longer than yours

3_B__

4. My ruler is .................................... d. telivision in the morning.

4_C_

5. How far is it from your house........ e. to visit Ho Chi Minh City?

5_A_

6. What’ s the weather like .............. f. in Thai Binh to day ?

6_F_

13 tháng 6 2018

Bài 3:Có bao nhiêu cách đọc ở phần được gạch chân của các từ sau.

1.2 cách

2.3 cách

3.3 cách

4.2 cách

5.2 cách

6.2 cách

26 tháng 10 2019

Câu 2 Bản chất hóa học của gen là ADN ;gen là 1 đoạn của phân tử ADN có chức năng di truyền xác định;mỗi gen có 600->1500 cặp nu

26 tháng 10 2019

Câu 4:Tính đa dạng và đặc thù của protein do protein cấu trúc theo nguyên tắc đa phản với 20 loại axit amin và do các cấu trúc không gian

26 tháng 10 2019

câu 1: vì chúng được hình thành dựa theo mỗi mạch đơn cũ của mẹ ( nguyên tắc bán bảo toàn) và tổng hợp AND trong môi trường nội bào theo nguyên tắc bổ sung

Choose the suitable word given in the margin and supply its correct form to complete tha gaps:COMMIT, CONNECT, EXIST, HAPPY, DEVELOP, FIND, INTIMATE, SIGN, REVOLVE, STABLEImportant social changes are taking place in the areas of marriage and the family. There is a global 1__revolution__ going on in how we think of ourselves and how we form ties and 2__connected_ with othersWhat most people call the traditional family was in fact a transitional phase in family 3_development_ in the 1950s. By...
Đọc tiếp

Choose the suitable word given in the margin and supply its correct form to complete tha gaps:

COMMIT, CONNECT, EXIST, HAPPY, DEVELOP, FIND, INTIMATE, SIGN, REVOLVE, STABLE

Important social changes are taking place in the areas of marriage and the family. There is a global 1__revolution__ going on in how we think of ourselves and how we form ties and 2__connected_ with others

What most people call the traditional family was in fact a transitional phase in family 3_development_ in the 1950s. By then the idea that romantic love was the best 4__existant__ for marriage had replaced the concept of marriage as an economic contract. The family has since changed further.

In the traditional family the marriage couple was only one part of the family system. Ties with children and other relatives were equally important in day-to-day 5_________. Today the couple is at the core of what the family is. While statistically marriage is still the norm, for most people its 6__________ has completely changed. Although marriage promotes the 7_________ of relationship by making a public declaration of 8________, it is now the quality of the couple’s relationship which is considered the most inportant element.

A couple has its own exclusive history. It is a unit based upon emotional communication or 9________. Communication is both the means of establishing the tie in the first place and the basis for ensuring continuing 10__________in the relationship.

MIK LÀM ĐC 4 CÂU R, CÁC BN GIÚP MIK LÀM TIẾP NHAAAAAA~~

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Choose the suitable word given in the margin and supply its correct form to complete tha gaps:COMMIT, CONNECT, EXIST, HAPPY, DEVELOP, FIND, INTIMATE, SIGN, REVOLVE, STABLEImportant social changes are taking place in the areas of marriage and the family. There is a global 1__revolution__ going on in how we think of ourselves and how we form ties and 2__connected_ with othersWhat most people call the traditional family was in fact a transitional phase in family 3_development_ in the 1950s. By...
Đọc tiếp

Choose the suitable word given in the margin and supply its correct form to complete tha gaps:

COMMIT, CONNECT, EXIST, HAPPY, DEVELOP, FIND, INTIMATE, SIGN, REVOLVE, STABLE

Important social changes are taking place in the areas of marriage and the family. There is a global 1__revolution__ going on in how we think of ourselves and how we form ties and 2__connected_ with others

What most people call the traditional family was in fact a transitional phase in family 3_development_ in the 1950s. By then the idea that romantic love was the best 4__existant__ for marriage had replaced the concept of marriage as an economic contract. The family has since changed further.

In the traditional family the marriage couple was only one part of the family system. Ties with children and other relatives were equally important in day-to-day 5_________. Today the couple is at the core of what the family is. While statistically marriage is still the norm, for most people its 6__________ has completely changed. Although marriage promotes the 7_________ of relationship by making a public declaration of 8________, it is now the quality of the couple’s relationship which is considered the most inportant element.

A couple has its own exclusive history. It is a unit based upon emotional communication or 9________. Communication is both the means of establishing the tie in the first place and the basis for ensuring continuing 10__________in the relationship.

0
Choose the suitable word given in the margin and supply its correct form to complete tha gaps: COMMIT, CONNECT, EXIST, HAPPY, DEVELOP, FIND, INTIMATE, SIGN, REVOLVE, STABLE Important social changes are taking place in the areas of marriage and the family. There is a global 1__revolution__ going on in how we think of ourselves and how we form ties and 2__connected_ with others What most people call the traditional family was in fact a transitional phase in family 3_development_ in the...
Đọc tiếp

Choose the suitable word given in the margin and supply its correct form to complete tha gaps:

COMMIT, CONNECT, EXIST, HAPPY, DEVELOP, FIND, INTIMATE, SIGN, REVOLVE, STABLE

Important social changes are taking place in the areas of marriage and the family. There is a global 1__revolution__ going on in how we think of ourselves and how we form ties and 2__connected_ with others

What most people call the traditional family was in fact a transitional phase in family 3_development_ in the 1950s. By then the idea that romantic love was the best 4__existant__ for marriage had replaced the concept of marriage as an economic contract. The family has since changed further.

In the traditional family the marriage couple was only one part of the family system. Ties with children and other relatives were equally important in day-to-day 5_________. Today the couple is at the core of what the family is. While statistically marriage is still the norm, for most people its 6__________ has completely changed. Although marriage promotes the 7_________ of relationship by making a public declaration of 8________, it is now the quality of the couple’s relationship which is considered the most inportant element.

A couple has its own exclusive history. It is a unit based upon emotional communication or 9________. Communication is both the means of establishing the tie in the first place and the basis for ensuring continuing 10__________in the relationship.

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