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Pham Trong Bach
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Cao Minh Tâm
9 tháng 11 2017 lúc 8:54

128.912 = 1816

Ta có: 128.912 = (4.3)8.912 =48.38.912 =(22)8.(32)4.912

= 216.94.912 = 216.916= (2.9)16 = 1816

Vế trái bằng vế phải nên đẳng thức được chứng minh

Nguyễn Thanh Hằng
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Phạm Thị Diệu Hằng
4 tháng 12 2018 lúc 14:25

Đáp án là D

Nguyễn Tũn
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Đỗ Thị Thanh Lương
3 tháng 6 2017 lúc 16:04

Nếu 9999 = 4

       8888 = 8

       1816 = 3

      1212 = 0

thì 1919 = 2

Vậy thôi nhé ! chấm hết

Trần Duy Thanh
3 tháng 6 2017 lúc 15:54

=1919

online
3 tháng 6 2017 lúc 16:02

nếu 9999 = 4

8888 = 8

1816 = 3

1212 = 0

thì 1919 = 1919

Nguyễn Ngọc Trâm
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Tiên Nữ Của Ngọn Lửa Rồn...
5 tháng 4 2017 lúc 20:46

Sau khi xoa chu so 7 o hang don vi cua so phai tim thi so do se giam di 10 lan va them 7 don vi

So phai tim la: ( 1816 - 7 ) : ( 10 - 1 ) x 10 + 7 = 2017

Đỗ quang Hưng
5 tháng 4 2017 lúc 20:50

số phải tìm là 2017

✓ ℍɠŞ_ŦƦùM $₦G ✓
5 tháng 4 2017 lúc 20:54

Ta có : 1816 : ( 10 - 1 )  = 201 ( dư 7 )

Số đó là : 201 x 10 + 7 = 2017

          Đ/s : 2017

TRẦN LINH
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Đinh Thanh Tâm
5 tháng 10 2016 lúc 20:07

1919=4

Nguyễn Ngọc Bảo Trâm
5 tháng 10 2016 lúc 20:26

Nếu 9999 = 4

       8888 = 8 

       1816 = 6

       1212 = 0

Thì  1919 = 2 Chấm .

TRẦN LINH
5 tháng 10 2016 lúc 21:12

sai rùi mk cho 2 bạn nứa rùi mk sẽ đưa ra kq

aethstic
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🍀thiên lam🍀
18 tháng 4 2021 lúc 18:50

71. and

72. spend

73. would

74. idea

75. nightmare

76. called

77. against

78. published

79. Since

80. on

aethstic
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🍀thiên lam🍀
13 tháng 1 2021 lúc 18:13

V. Use the correct form of the words given in the brackets to complete the passage.

41. (CONSTRUCT) __Construction___of the Bamboo Organ was begun in 1816 by a Spanish 42. (MISSION) ___missionary__ Diego Cera. Why was bamboo used? 43. (CONSIDER) ___considering___the relative 44. (POOR)___poverty___ of the area, perhaps the need to use 45.(EXPENSE) ___inexpensive___ materials was a factor. Moreover, the 46. (MAKE)___maker___ of the organ no doubt desired to use appropriate 47. (LOCALLY) local materials. In 1916, bamboos were cut and buried under the sand of the seashore for about a year. Those that survived this 48 (EXPOSE) ____exposer__ to insects and the elements were considered of durable quality and used in 49 (BUILD) ___building___ building the organ. Over the next several years, the 50. (VARIETY) ____various___ parts of the organ were put together. When the bulk of it was finished in 1821, it was proclaimed “the finest and the first of its kinds in the country”.

🍀thiên lam🍀
13 tháng 1 2021 lúc 18:18

VI. Fill each blank with a suitable word to complete the following passage.

New Zealand enjoys a (51)___range___of temperatures approximate to (52)__those____experienced by Australia’s eastern seaboard. Free from the influence (53)___of___anydose land mass, yearly temperature variations are smaíỉ approximate 10°c (54)___variation___between winter and summer.The north of the country (55)___tends___to be subtropical and the south, temperate. Mountain ranges (56)___extend___down much of the length of New Zealand, (57) ___with__ the regions lying west of the ranges (58) __experiencing___ much higher rainfall (59)___than___ those to the east. The drier eastern regions average over 2000 hours of sunshine a year and contain the main wine-growing areas and summer resorts.Snow is largely confined to the alpine areas of the central North Island and SouthAlps, though it can fall to (60)___low___level in the deep south for a day or so at a time.

🍀thiên lam🍀
13 tháng 1 2021 lúc 18:28

VIII. Finish each of the following sentences in such a way that it means the sameas the one printed before it.

71. Although it rained torrentially all day, we enjoyed the voyage.

Torrentially.......as it rained all day, we enjoyed the voyage............

72. He said he did not steal the car.

He denied.......................stealing the car..........................................

73. I’m sorry now that I left my family for a man.

Now I wish ................I had not left the family for a man...............

74. This is the worst meal I have ever had.

Never................have I had worse meal than this meal...............

75. Is this the only way to reach the city center?

isn't there ...............any way to reach the city center?............... 

76. He never suspected that money had been stolen.

At no time .........did he suspect that money had been stolen...........

77. We would prefer you to behave in a polite way.

We would rather..............you behaved in a polite way..............

78.1 am not friendly with him, in fact I hardly even know him.

Far from ........being friendly with him, I hardly even know him.....

79. As people grow older, they become more and more forgetful.

The ....more older people grow, the more forgetful they become. ......

80. Someone stole my bag while we were playing tennis.

During........the tennis match, someone stole my bag...........

Nè Munz
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Lihnn_xj
24 tháng 4 2022 lúc 10:04

memo

products

eruption

invited

Hoa Nguyen
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Buddy
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Nguyễn Lê Phước Thịnh
9 tháng 2 2023 lúc 10:04

E-1

D-2

B-3

A-4

C-5