giúp mình câu 34 với ạ
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xx - 1x × 2 = 34
11 × x - 10 × 2 - x × 2 = 34
(11 - 2) × x - 20 = 34
9 × x = 34 + 20
9 × x = 54
x = 54 : 9
x = 6
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![](https://rs.olm.vn/images/avt/0.png?1311)
câu 34:
điện trở là:
R=(U)2/\(\rho\)hoa=(6)2/3=12(\(\Omega\))
điện năng tiêu thụ là:
A=\(\rho\)hoa.t=3.14400=43200(J)
mai làm típ :)
Em ơi chỉ đc hỏi tối đa 3 câu tự luận nha, em vui lòng đăng câu hỏi mới nha
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33 If you don't water these plants, they will die
34 Mary asked me if she could borrow me some money because she wanted to buy that shirt
35 The old man whose bicycle I borrowed yesterday is working in this factory
36 In vietnam, Basketball isn't as popular as football
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\(12:\left(3x-7\right)+34=40\)
\(12:\left(3x-7\right)=40-34\)
\(12:\left(3x-7\right)=6\)
\(3x-7=12:6\)
\(3x-7=2\)
\(3x=2+7\)
\(3x=9\)
\(x=9:3\)
\(x=3\)
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11 She asked me if I like English music
12 Two department stores have been built
13 The computer is being used at the moment
31 We should avoid playing computer games because it will hurt our eyes
32 Rescue workers sent water and food to victims yesterday
33 I like to travel to Europe but I don't have enough money
34 Our children will be taken care of by robots in 20 years' time
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ủa cái bài TA này em còn làm đc luôn á ! Anh có vở ghi ở lớp thì xem lại chỗ nào ko hiểu thì hỏi ba má
34. A