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5 tháng 12 2017

100013=1000300030001

9974=988053892018

nên 100014    >  9974

6 tháng 8 2020

x > y

'-'

Có \(x=\frac{2020}{2019}\) và \(y=\frac{2021}{2020}\). Xét phần hơn

Có \(x-1=\frac{2020}{2019}-1=\frac{2020}{2019}-\frac{2019}{2019}=\frac{1}{2019}\)

Có \(y-1=\frac{2021}{2020}-1=\frac{2021}{2020}-\frac{2020}{2020}=\frac{1}{2020}\)

Vì \(\frac{1}{2019}>\frac{1}{2020}\Leftrightarrow\frac{2020}{2019}>\frac{2021}{2020}\Rightarrow x>y\)

1 tháng 10 2023

27⁷ = (3³)⁷ = 3²¹

81⁵ = (3⁴)⁵ = 3²⁰

Do 21 > 20 nên 3²¹ > 3²⁰

Vậy 27⁷ > 81⁵

1 tháng 10 2023

Ta có: 277 = (33)= 3 21

815 = (34)= 320

Vì 3 21 > 320 nên  27> 815

28 tháng 12 2017

mình làm theo yêu cầu sửa lại đề nha

Ta có :

\(\frac{4^{15}}{7^{30}}=\frac{\left(2^2\right)^{15}}{7^{30}}=\frac{2^{30}}{7^{30}}=\left(\frac{2}{7}\right)^{30}\)

\(\frac{8^{10}.3^{30}}{7^{30}.4^{15}}=\frac{\left(2^3\right)^{10}.3^{30}}{7^{30}.\left(2^2\right)^{15}}=\frac{2^{30}.3^{30}}{7^{30}.2^{30}}=\frac{\left(2.3\right)^{30}}{\left(7.2\right)^{30}}=\frac{6^{30}}{16^{30}}=\left(\frac{6}{16}\right)^{30}=\left(\frac{3}{8}\right)^{30}\)

vì \(\frac{2}{7}< \frac{3}{8}\)nên \(\left(\frac{2}{7}\right)^{30}< \left(\frac{3}{8}\right)^{30}\)

Vậy ...

28 tháng 12 2017

quên là thế này nè đánh lộn 

  4^15/7^30 và 8^10.3^30/7^30.4^15

22 tháng 11 2015

P vào nick của bạn í mà xem ảnh, hình như đó là ảnh thiệt đó. Đó có phải ảnh của p ko? Nếu phải thì nhìn p xinh hơn đó!

15 tháng 4 2021

như ý 2G thì biết

Đặt \(A=\frac{1}{3^2}+\frac{1}{4^2}+\frac{1}{5^2}+....+\frac{1}{98^2}\)

Ta có : \(A< \frac{1}{2.3}+\frac{1}{3.4}+\frac{1}{4.5}+...+\frac{1}{97.98}\)

\(A< \frac{1}{2}-\frac{1}{3}+\frac{1}{3}-\frac{1}{4}+....+\frac{1}{97}-\frac{1}{98}\)

\(A< \frac{1}{2}-\frac{1}{98}\)

\(A< \frac{1}{2}\)

GOOD LUCK !!!

1 tháng 9 2021

ddddddddddddddddd

12 tháng 9 2019

Thế bào của động vật và của con người??? Động vật ngành gì, lớp gì vậy bạn? MK ko hiểu cho lém!

Mong bạn sửa lại cho rõ hơn, mk sẽ giúp bạn

HAND!!!

động vật ns chung í...bn cứ ns chung chung là đc mak...mơn nhìu

5 tháng 2 2022

tham khảo 

image

thack pạn :) 

18 tháng 10 2023

giúp tui với ae!

help tui v I. Viết dạng so sánh hơn và so sánh hơn nhất của các tính từ và trạng từ sau: Tính từ/ Trạng từSo sánh hơnSo sánh hơn nhất1. beautiful  2. hot  3. little  4. bad  5. good  6. attractive  II.Chọn đáp án đúng để điền vào chỗ trống trong các câu sau.1. She is ....................................... singer I’ve ever met.A. worse                     B. bad                                     C. the worst               D. badly2. Mary is...
Đọc tiếp

help tui v 

I. Viết dạng so sánh hơn và so sánh hơn nhất của các tính từ và trạng từ sau:

 

Tính từ/ Trạng từ

So sánh hơn

So sánh hơn nhất

1. beautiful

 

 

2. hot

 

 

3. little

 

 

4. bad

 

 

5. good

 

 

6. attractive

 

 

II.Chọn đáp án đúng để điền vào chỗ trống trong các câu sau.

1. She is ....................................... singer I’ve ever met.

A. worse                     B. bad                                     C. the worst               D. badly

2. Mary is ................................ responsible as Peter.

A. more                      B. the most                            C. much                      D. as

3. It is ................................. in the city than it is in the country.

A. noisily                   B. more noisier                     C. noisier                      D. noisy

4. She sings ……….. among the singers I have known.

A. the most beautiful                B. the more beautiful   C. the most beautifully            D. the more beautifully

5. She is ............................................. student in my class.

A. most hard-working                         B. more hard-working        

C. the most hard-working        D. as hard-working

6. The English test was .................................... than I thought it would be.

A. the easier              B. more easy                          C. easiest                   D. easier

7. English is thought to be .................................... than Math.

A. harder                    B. the more hard                   C. hardest                  D. the hardest

8. Jupiter is ....................................... planet in the solar system.

A. the biggest            B. the bigger                          C. bigger                    D. biggest

9. She runs …................................… in my class.

A. the slowest           B. the most slow                    C. the slowly              D. the most slowly

10. My house is ............................................... hers.

A. cheap than            B. cheaper                             C. more cheap than     D. cheaper than

11. She ______ working with children.

A. would like                    B. adores                        C. would love                D. wants

12. Speech is the fastest method of ______ between people.

A. communicate                B. communicates            C. communicated           D. communication

13. Do you mind ______? I’m feeling pretty tired.

A. driving                         B. drives                         C. drove                         D. driven

14. I had a really ______ dream last night.

A. important                      B. fantastic                     C. weird                         D. light

15. The technology has enabled development of an online ______ library.

A. virtual                           B. real                            C. funny                         D. fast

16. I like ______ up as soon as I finish eating.

A. wash                            B. to wash                      C. washes                       D. washed

17. I’m trying ______ Chinese though it’s very difficult.

A. learn                             B. learning                     C. learnt                         D. to learn

18. We should stop ______ because it is harmful to our health.

A. smoke                          B. smokes                      C. smoking                     D. to smoke

19. John isn’t here. Try ______ his home number.

A. phoning                        B. to phone                    C. phones                       D. phoned

20. Did you remember ______ that letter for me?

A. post                              B. to post                        C. posting                       D. posted

III. Cho dạng đúng của động từ trong ngoặc.

1. I was beginning (think) ____________ you’d never come.

2. I enjoy (play) ____________ tennis and squash.

3. We’ve decided (not go) ____________ away after all.

4. I didn’t fancy ( swim) ____________ in that water.

5. We’re considering (buy) ____________ a new car.

IV. Cho dạng đúng của tính từ / trạng từ ở dạng so sánh phù hợp.

1. People in rural areas talk (optimistically)…………………about the future than city people.

2. Nam plays football (bad) ………………. than Quang.

3. Does buffalo plough (good) ………………. than a horse?

4. Traffic in the city is always (busy) ……………than that in the countryside.

V. Cho dạng đúng của từ trong ngoặc..

1. She has the most ____________ two- year old girl. (ADORE)

2. He’s ____________ to computer games. (ADDICT)

3. The ideal candidate will be an effective ____________. (COMMUNICATE)

4. The best films are those which transcend national or ___________ barriers. (CULTURE)

5. Her time at collage was the most ____________ period of her life. (EVENT)

6. Couples strolled ____________ along the beach. (LEISURE)

7. She listens to classical music for ____________. (RELAX)

8. You haven’t yet given us a ____________ explanation. (SATISFY)

9. The ____________ party has been in office for almost ten years. (SOCIETY)

VI. Viết lại câu mà nghĩa không đổi..

6. I don’t want to go to work this morning.

=> I don’t feel like _____________________________________________________

7. Dave said that “Let’s go to the movies”.

=> Dave suggested ____________________________________________________

8. It’s not a good idea to drive in the heavy rain.

=> It’s better to avoid __________________________________________________

9. Her explanation was so complicated that I couldn’t understand anything.

=> Her explanation was too______________________________________________

10. She felt very sleepy, so she went to bed early.

=> She went _________________________________________________________

12. The flight to London lasted seven hours.

=> It took ____________________________________________________________

13. It is not easy to train horses.

 => Horses are_____________________________________

14. The red car was more beautiful than the blue car.

=> The________________________________

15. You can buy

I. Viết dạng so sánh hơn và so sánh hơn nhất của các tính từ và trạng từ sau:

 

Tính từ/ Trạng từ

So sánh hơn

So sánh hơn nhất

1. beautiful

 

 

2. hot

 

 

3. little

 

 

4. bad

 

 

5. good

 

 

6. attractive

 

 

II.Chọn đáp án đúng để điền vào chỗ trống trong các câu sau.

1. She is ....................................... singer I’ve ever met.

A. worse                     B. bad                                     C. the worst               D. badly

2. Mary is ................................ responsible as Peter.

A. more                      B. the most                            C. much                      D. as

3. It is ................................. in the city than it is in the country.

A. noisily                   B. more noisier                     C. noisier                      D. noisy

4. She sings ……….. among the singers I have known.

A. the most beautiful                B. the more beautiful   C. the most beautifully            D. the more beautifully

5. She is ............................................. student in my class.

A. most hard-working                         B. more hard-working        

C. the most hard-working        D. as hard-working

6. The English test was .................................... than I thought it would be.

A. the easier              B. more easy                          C. easiest                   D. easier

7. English is thought to be .................................... than Math.

A. harder                    B. the more hard                   C. hardest                  D. the hardest

8. Jupiter is ....................................... planet in the solar system.

A. the biggest            B. the bigger                          C. bigger                    D. biggest

9. She runs …................................… in my class.

A. the slowest           B. the most slow                    C. the slowly              D. the most slowly

10. My house is ............................................... hers.

A. cheap than            B. cheaper                             C. more cheap than     D. cheaper than

11. She ______ working with children.

A. would like                    B. adores                        C. would love                D. wants

12. Speech is the fastest method of ______ between people.

A. communicate                B. communicates            C. communicated           D. communication

13. Do you mind ______? I’m feeling pretty tired.

A. driving                         B. drives                         C. drove                         D. driven

14. I had a really ______ dream last night.

A. important                      B. fantastic                     C. weird                         D. light

15. The technology has enabled development of an online ______ library.

A. virtual                           B. real                            C. funny                         D. fast

16. I like ______ up as soon as I finish eating.

A. wash                            B. to wash                      C. washes                       D. washed

17. I’m trying ______ Chinese though it’s very difficult.

A. learn                             B. learning                     C. learnt                         D. to learn

18. We should stop ______ because it is harmful to our health.

A. smoke                          B. smokes                      C. smoking                     D. to smoke

19. John isn’t here. Try ______ his home number.

A. phoning                        B. to phone                    C. phones                       D. phoned

20. Did you remember ______ that letter for me?

A. post                              B. to post                        C. posting                       D. posted

III. Cho dạng đúng của động từ trong ngoặc.

1. I was beginning (think) ____________ you’d never come.

2. I enjoy (play) ____________ tennis and squash.

3. We’ve decided (not go) ____________ away after all.

4. I didn’t fancy ( swim) ____________ in that water.

5. We’re considering (buy) ____________ a new car.

IV. Cho dạng đúng của tính từ / trạng từ ở dạng so sánh phù hợp.

1. People in rural areas talk (optimistically)…………………about the future than city people.

2. Nam plays football (bad) ………………. than Quang.

3. Does buffalo plough (good) ………………. than a horse?

4. Traffic in the city is always (busy) ……………than that in the countryside.

V. Cho dạng đúng của từ trong ngoặc..

1. She has the most ____________ two- year old girl. (ADORE)

2. He’s ____________ to computer games. (ADDICT)

3. The ideal candidate will be an effective ____________. (COMMUNICATE)

4. The best films are those which transcend national or ___________ barriers. (CULTURE)

5. Her time at collage was the most ____________ period of her life. (EVENT)

6. Couples strolled ____________ along the beach. (LEISURE)

7. She listens to classical music for ____________. (RELAX)

8. You haven’t yet given us a ____________ explanation. (SATISFY)

9. The ____________ party has been in office for almost ten years. (SOCIETY)

VI. Viết lại câu mà nghĩa không đổi..

6. I don’t want to go to work this morning.

=> I don’t feel like _____________________________________________________

7. Dave said that “Let’s go to the movies”.

=> Dave suggested ____________________________________________________

8. It’s not a good idea to drive in the heavy rain.

=> It’s better to avoid __________________________________________________

9. Her explanation was so complicated that I couldn’t understand anything.

=> Her explanation was too______________________________________________

10. She felt very sleepy, so she went to bed early.

=> She went _________________________________________________________

12. The flight to London lasted seven hours.

=> It took ____________________________________________________________

13. It is not easy to train horses.

 => Horses are_____________________________________

14. The red car was more beautiful than the blue car.

=> The________________________________

15. You can buy many kinds of tax free goods before getting on the plane.

=> Many kinds of tax free goods _______________________________________________

many kinds of tax free goods before getting on the plane.

=> Many kinds of tax free goods _______________________________________________

2
22 tháng 8 2021

Tính từ/ Trạng từ

So sánh hơn

So sánh hơn nhất

1. beautifully

beautifully

the most beautifully

2. hot

hotter

the hottest

3. crazy

crazier

the craziest

4. slowly

more slowly

the most slowly

5. few

fewer

the fewest

6. little

less

the least

7. bad

worse

the worst

8. good

better

the best

9. attractive

more attractive

the most attractive

10. big

bigger

the biggest

 

II.Chọn đáp án đúng để điền vào chỗ trống trong các câu sau.

1. She is ....................................... singer I’ve ever met.

A. worse                     B. bad                                     C. the worst               D. badly

2. Mary is ................................ responsible as Peter.

A. more                      B. the most                            C. much                      D. as

3. It is ................................. in the city than it is in the country.

A. noisily                   B. more noisier                     C. noisier                      D. noisy

4. She sings ……….. among the singers I have known.

A. the most beautiful                B. the more beautiful   C. the most beautifully            D. the more beautifully

5. She is ............................................. student in my class.

A. most hard-working                         B. more hard-working        

C. the most hard-working        D. as hard-working

6. The English test was .................................... than I thought it would be.

A. the easier              B. more easy                          C. easiest                   D. easier

7. English is thought to be .................................... than Math.

A. harder                    B. the more hard                   C. hardest                  D. the hardest

8. Jupiter is ....................................... planet in the solar system.

A. the biggest            B. the bigger                          C. bigger                    D. biggest

9. She runs …................................… in my class.

A. the slowest           B. the most slow                    C. the slowly              D. the most slowly

10. My house is ............................................... hers.

A. cheap than            B. cheaper                             C. more cheap than     D. cheaper than

11. She ______ working with children.

A. would like                    B. adores                        C. would love                D. wants

12. Speech is the fastest method of ______ between people.

A. communicate                B. communicates            C. communicated           D. communication

13. Do you mind ______? I’m feeling pretty tired.

A. driving                         B. drives                         C. drove                         D. driven

14. I had a really ______ dream last night.

A. important                      B. fantastic                     C. weird                         D. light

15. The technology has enabled development of an online ______ library.

A. virtual                           B. real                            C. funny                         D. fast

16. I like ______ up as soon as I finish eating.

A. wash                            B. to wash                      C. washes                       D. washed

17. I’m trying ______ Chinese though it’s very difficult.

A. learn                             B. learning                     C. learnt                         D. to learn

18. We should stop ______ because it is harmful to our health.

A. smoke                          B. smokes                      C. smoking                     D. to smoke

19. John isn’t here. Try ______ his home number.

A. phoning                        B. to phone                    C. phones                       D. phoned

20. Did you remember ______ that letter for me?

A. post                              B. to post                        C. posting                       D. posted

1.to think

2.playing

3.not to go

4.swimming

5.buying

more optimistically

worse

better

busier