giúp mình voi
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NT
1
GN
GV Nguyễn Trần Thành Đạt
Giáo viên
7 tháng 8 2023
\(a,\widehat{aOn}+\widehat{mOn}+\widehat{mOb}=180^o\left(kề.bù\right)\\ \Leftrightarrow70^o+\widehat{mOn}+40^o=180^o\\ Vậy:\widehat{mOn}=180^o-\left(70^o+40^o\right)=70^o\\ b,Vì:\widehat{aOn}=\widehat{mOn}\\ Mà.tia.On.nằm.giữa.2.tia.Oa.và.Om.nên:\\ On.là.tia.phân.giác.góc.\widehat{aOm}\)
Giup mình với mình đang cần gấp
giup mình với mai mình thi rồi
31 tháng 8 2023
AF=FG=GC
=>AG=2/3AC
=>S ABG=2/3*S ABC
BE=ED=1/2AD
=>BE+ED=1/2AD+1/2AD=AD
=>BD=DA
=>D là trung điểm của AB
=>AD=1/2AB
=>BE=ED=1/4AB
AE=AD+DE=1/4AB+1/2AB=3/4AB
=>S AEG=3/4*S ABG=3/4*2/3*S ABC=1/2*S ABC
=>S BEGC=1/2*S ABC
AF=FG
=>AF=1/2*AG
=>S AEF=1/2*S AEG=1/2*1/2*S ABC=1/4*S ABC
AD=2DE
=>AD=2/3AE
=>S ADF=2/3*S AEF=2/3*1/4*S ABC=1/6*S ABC
=>s EDFG=S ABC(1/4-1/6)=1/12*S ABC
S BCGE-S DEFG=15cm2
=>S ABC(1/2-1/12)=15
=>SABC=15:5/12=36cm2
DT
15 tháng 9 2021
1. seeing
2. working
3. to meet
4. talking/ to finish
5. asking
6. not to speak
7. carrying
8. overhearing
9. writing/ waiting
10. to avoid/ being
11. giving/ to speak
12. going/ saying
13. to persuade/ to agree
14. sneezing/ sitting
15. driving/ being
16. to start/ looking
17. to show/ to use
18. making/ to do
19. remaining/ to help/ to stay
20. listening/ hearing
21. camping
22. to be
23. to speak
24. to pay
25. to meet
26. not trying/ to solve
27. being
28. hunting
29. to be
30. working
31. going
32. to do
33. to bring
34. working
35. to buy
36. to inform
37. studying
38. to buy
39. to be fed
40. working
GN
GV Nguyễn Trần Thành Đạt
Giáo viên
11 tháng 8 2023
\(Bài.7:\\ a,\dfrac{\left(-3\right)^{10}.15^5}{25^3.\left(-9\right)^7}=\dfrac{3^{10}.3^5.5^5}{\left(5^2\right)^3.\left(3^2\right)^6.3.\left(-3\right)}\\ =\dfrac{3^{15}.5^5}{-5^6.3^{14}}=-\dfrac{3}{5}\\ b,2^3+3.\left(\dfrac{1}{9}\right)^0-2^{-2}.4+\left[\left(-2\right)^2:\dfrac{1}{2}\right].8\\ =8+3.1-\dfrac{1}{4}.4+\left[4:\dfrac{1}{2}\right].8\\ =8+3-1+8.8\\ =11-1+64=10+64=74\)
GN
GV Nguyễn Trần Thành Đạt
Giáo viên
11 tháng 8 2023
Bài 10:
\(a,3^{35}=\left(3^7\right)^5=2187^5\\ 5^{20}=\left(5^4\right)^5=625^5\\ Vì:2187^5>625^5\left(Vì:2187>625\right)\\ \Rightarrow3^{35}>5^{20}\\ b,2^{32}=\left(2^4\right)^8=16^8\\ Vì:37^8>16^8\left(Do:37>16\right)\\ \Rightarrow37^8>2^{32}\)
14 tháng 12 2021
1 have just seen
2 have ever seen /isdefinitely
3 never use
4 has already seen
5 can probably get
a)A:Could you tell me how go to the bookstore?
B:Go straight a head.Take the first street on the right
The bookstore is on your the supermarket
b)C: Could you show me the way to the bank, please?
D: Go straight a head. Take the second street on the left
The bank is next to fashion shop
c)E: Could you tell me how go to the bakery?
F: Go straight a head. Take the third street on the left
Turn the left. Go straight a head. The bakery next to the park
d)G:Could you show me the way to the fashion shop, please?
H: Go straight a head. Take the second street on the left
The fashion shop is oppisite the hotel
e)I: Could you tell me how go to hospital, please?
J: Go straight a head. Take the second street on the right
The hospital is oppisite the toystore
f) Could you show me the way to the bus stop?
Go straight a head. Take the first street on the left
The bus stop is next to the museum
g) Could you tell me how go to the toy store, please?
Go straight a head. Take the second on the right
The hospital is next to the post office
h) Could you show me the way to the restaurant, please?
Go straight a head. Take the first street on the right
The restaurant is next to the supermarket
Nếu sai thì cho mk xl
câu a phải là on the right mới đúng