Không 

Chịu, tự đi mà làm

I love making paper flowers everyday

I love making paper flowers everyday

b: \(\left(x-\dfrac{1}{3}\right)^3=-\dfrac{8}{27}\)

=>\(\left(x-\dfrac{1}{3}\right)^3=\left(-\dfrac{2}{3}\right)^3\)

=>\(x-\dfrac{1}{3}=-\dfrac{2}{3}\)

=>\(x=-\dfrac{2}{3}+\dfrac{1}{3}=-\dfrac{1}{3}\)

c: \(\left(5x+1\right)^2=\dfrac{36}{49}\)

=>\(\left[{}\begin{matrix}5x+1=\dfrac{6}{7}\\5x+1=-\dfrac{6}{7}\end{matrix}\right.\Leftrightarrow\left[{}\begin{matrix}5x=\dfrac{6}{7}-1=-\dfrac{1}{7}\\5x=-\dfrac{6}{7}-1=-\dfrac{13}{7}\end{matrix}\right.\)

=>\(\left[{}\begin{matrix}x=-\dfrac{1}{7}:5=-\dfrac{1}{35}\\x=-\dfrac{13}{7}:5=-\dfrac{13}{35}\end{matrix}\right.\)

d: \(\left(\dfrac{1}{3}-\dfrac{3}{2}x\right)^2=2\dfrac{1}{4}\)

=>\(\left(\dfrac{3}{2}x-\dfrac{1}{3}\right)^2=\dfrac{9}{4}\)

=>\(\left[{}\begin{matrix}\dfrac{3}{2}x-\dfrac{1}{3}=\dfrac{3}{2}\\\dfrac{3}{2}x-\dfrac{1}{3}=-\dfrac{3}{2}\end{matrix}\right.\Leftrightarrow\left[{}\begin{matrix}\dfrac{3}{2}x=\dfrac{3}{2}+\dfrac{1}{3}=\dfrac{11}{6}\\\dfrac{3}{2}x=-\dfrac{3}{2}+\dfrac{1}{3}=-\dfrac{7}{6}\end{matrix}\right.\)

=>\(\left[{}\begin{matrix}x=\dfrac{11}{6}:\dfrac{3}{2}=\dfrac{11}{6}\cdot\dfrac{2}{3}=\dfrac{11}{9}\\x=-\dfrac{7}{6}:\dfrac{3}{2}=-\dfrac{7}{6}\cdot\dfrac{2}{3}=-\dfrac{7}{9}\end{matrix}\right.\)

e: \(\left(\dfrac{4}{5}\right)^{2x+5}=\dfrac{256}{625}\)

=>\(\left(\dfrac{4}{5}\right)^{2x+5}=\left(\dfrac{4}{5}\right)^4\)

=>2x+5=4

=>2x=4-5=-1

=>\(x=-\dfrac{1}{2}\)

g: \(\left(\dfrac{1}{3}\right)^{x+1}+\left(\dfrac{1}{3}\right)^{x+2}=\dfrac{1}{12}\)

=>\(\left(\dfrac{1}{3}\right)^x\cdot\dfrac{1}{3}+\left(\dfrac{1}{3}\right)^x\cdot\dfrac{1}{9}=\dfrac{1}{12}\)

=>\(\left(\dfrac{1}{3}\right)^x\left(\dfrac{1}{3}+\dfrac{1}{9}\right)=\dfrac{1}{12}\)
=>\(\left(\dfrac{1}{3}\right)^x=\dfrac{1}{12}:\dfrac{4}{9}=\dfrac{1}{12}\cdot\dfrac{9}{4}=\dfrac{3}{4\cdot4}=\dfrac{3}{16}\)

=>\(x=log_{\dfrac{1}{3}}\left(\dfrac{3}{16}\right)\)

Mọi người giúp mk bài này với!

Exercise 4: Complete by changing the form of the word

1. We were waiting for the ___development___________ of new plans for the city’s convention center. (DEVELOP)

2. The new law should allow more ____disabled__________ people to enter the mainstream of American life. (ABLE)

3. The primary source of income for the groups was largely from donations from the group members and volunteers themselves. (DONATE)

SECONDARY_GRADE 7_UNIT 3_COMMUNITY SERVICE 10

4. In our community, the responsibility for caring for the elderly upon their children? (OLD)

(Câu 3, 4 người ta điền sẵn rồi nha, mình in đậm lại cho bạn thấy thoi)

5. Several families living by the river were forced to leave their houses because of the _____flood_________ (FLOODED)

6. ______tutorial________ is a period of instruction given by a university or college tutor to an individual or very small group. (TUTOR)

7. The ______provision________ of good public transport will be essential for developing the area. (PROVIDE)

8. I am happy, indeed so ____proud__________ of to be associated with this project. (PRIDE)

9. The hospital has asked various ___voluntary___________ organizations to help raise money for the new operating theatre. (VOLUNTEER)

10.When she dies-and it will be soon-she will leave behind three ___orphans___________. (ORPHANAGE)

no sugar ban oi

=)

1 have been

2 had been singing

Phân tích đa thức thành nhân tử:

16\(x^{2^{ }}\) + 8\(x\) + 1 

1.    Write the second sentence so that it has the same meaning to the first

1, If you often go swimming, you will keep fit

è Swimming .....will keep you fit........................

         2, It's a good idea to do exersice regularly

è You ………should do exercise regularly…………….........

          3,  Tom’s gained 5 kilos since he quit smoking

è Tom’s put …on 6 kilos since he quit smoking…………………….

2.   Rewrite the sentence, using the given words

1,  You shouldn’t skip your breakfast

è ……It is unhealthy to ski[ your breakfast……………………………………….. (healthy)

          2,  Boys don’t have as much acne as girls

è ……Girls have more acne than boys………………………………………(than)

3,  Doing exersice every day is a good idea

è ………You should do exercise everyday……………………………………(should)

2. A. melody   B. cycling C. collect   D. eggshell

3. A.  fragile   B. fishing   C. gardening   D. gymnastics

4. A. hobby   B. arrange    C. model   D. pottery

5. A. melody   B. monopoly   C. mountain D. allergy

 6. A.  unique   B. calorie   C. unusual   D. conjunction

7. A. compound   B. concentrate   C. coordinate   D. diet

8. A. independent   B. depression   C. attention   D. conjunction

9. A. itchy   B. junk food   C. sickness   D. triathlon 

10.  A. sunburn   B. vegetarian   C. benefit   D. blanket