Đề?

ảnh lỗi rồi 

k có đề

Lúc đầu người đó có số trứng là:

\(20+20+28=68(\)\(quả)\)

Đáp số:...

\(#yH\)

\(#NBaoNgoc\)

                                                 Bài giải

Số quả trứng có lúc đầu là: 

                         20x2+28 = 68 (quả )

                                   Đáp số: 68 quả trứng.

200 : [ 100 - ( 5². 2010⁰ +50 ) ] + ( 7² - 6. 2³ )²⁰²¹

= 200 : [ 100 - ( 25 . 1 + 50 ) ] + ( 49 - 6 . 8 ) ²⁰²¹

= 200 : [ 100 - ( 25 + 50 ) ] + ( 49 - 48 ) ²⁰²¹

= 200 : [ 100 - 75 ] + 1²⁰²¹

= 200 : [ 100 - 75 ] + 1

= 200 : 25 + 1

= 8 + 1

= 9

\(200:[100-\left(5^2.2021^0+50\right)]+\left(7^2-6.2^3\right)^{2021}\)
\(200:[100-\left(25+50\right)]+\left(49-48\right)^{2021}\)
\(200:25+1\)
=8+1=9

1b

2d

3d

4c

5c

6d

25c

26a

27b

28a

29b

30b

___

1 d -> easily

2. die -> death

3. occasional -> occasionally

4. shame -> shy

5. instruct -> instruction

6. science -> scientific 

7. please -> pleasure

8. sadness -> sad

9. national -> nations

10. courage -> encourages

11. equal -> equality

12. industry -> industrial

13. automatic -> automatically

14. manufacture -> manufactured

15. consequence -> consequently

16. rich -> enrich

17. disappointing -> disappointed

18. apparent -> apparently

19. financial -> finance

20. extinction -> extinct

7 b

8 a

9 c

10 c

11 c

12 b

13 c

14 d

15 c

16 d

17 a

18 c

19 d

20 c

21 b

22 a

23 d

24 b

12 

1, peaceful

2,nomandic

3,collector

4,inconvenient

5,unsafe

6,friendly

7,healthy

8,traditional

9,generousity

10,soundly

1 peaceful

2 nomadic

3 collector

4 inconvenient

5 unsafe 

6 friendly

7 healthily

8 traditional

9 generousity 

10 soundless

1 than

2 as

3 more

4 than

5 more

6 than

7 as

8 than

1. than

2. as

3. more

4. than

5. more

6. than

7. as

8. than