a (0,125)3.83
b (-39)4\(\div\)134
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27 tháng 12 2022
1)\(y\times7:5+4\times8=134\)
\(\Leftrightarrow y\times7:5+32=134\)
\(\Leftrightarrow y\times7:5=102\)
\(\Leftrightarrow y\times7=510\)
\(\Leftrightarrow y=72,86\)
2) \(\dfrac{1}{4}:0,25-\dfrac{1}{8}:0,125+\dfrac{1}{2}:0,5-\dfrac{1}{10}\)
\(=0,25:0,25-0,125:0,125+0,5:0,5-\dfrac{1}{10}\)
\(=1-1+1-\dfrac{1}{10}\)
\(=\dfrac{9}{10}\)
TT
5 tháng 6 2017
D, A & C
I don't think I'll go outdoor ( outside) now. It's too cold.
=> Tôi không nghĩ tôi sẽ đi ngoài trời bây giờ. Nó quá lạnh.
NT
2
19 tháng 9 2017
a) 0,1253.83
=(0,125.8)3
=13
=1.
b)(-39)4:134
=394:134
=(39:13)4
=34
=81
19 tháng 9 2017
a)0,1253 . 83 = (0,125 . 8)3 = 13 = 1
b) (-39)4 : 134 = ((-39 ): 13 )4 = 34 = 81
NH
4
19 tháng 8 2023
a: =>7(135:x-13)=14
=>135:x-13=2
=>135:x=15
=>x=9
b: =>11x-66-4x=11
=>7x=77
=>x=11
H9
HT.Phong (9A5)
CTVHS
19 tháng 8 2023
\(120+\left(135:x-13\right)\cdot7=134\)
\(\Rightarrow\left(135:x-13\right)\cdot7=134-120\)
\(\Rightarrow\left(135:x-13\right)\cdot7=14\)
\(\Rightarrow135:x-13=14:7\)
\(\Rightarrow135:x=2+13\)
\(\Rightarrow135:x=15\)
\(\Rightarrow x=135:15\)
\(\Rightarrow x=9\)
_______________
\(11\cdot\left(x-6\right)=4\cdot x+11\)
\(\Rightarrow11\cdot x-66=4\cdot x+11\)
\(\Rightarrow11\cdot x-4\cdot x=11+66\)
\(\Rightarrow7\cdot x=77\)
\(\Rightarrow x=77:7\)
\(\Rightarrow x=11\)
HT
23 tháng 3 2017
2. A: In 50 years', this school'll have 2.000 students (No, everyone will study at home)
B : no, it won't. everyone will study at home
3. A: Peter'll play for England one day. (No, Wales)
B: No, he won't. He'll play for Wales one day. 4. A: Jack'll pass all his exams this year. ( No, most of ) B : No, he won't. 5. A: In 5 years' time, I'll be a poor artist. (No, rich and famous)
B: No, I won't. I'll ba a rich and famous artisr. 6. A: In 10 years' time, you'll be my assistant (No, manager) B : No, you won't. You'll be my manager. Ex2 : Đặt câu hỏi với từ in đậm Our class has Geography on Monday -> ___What subject does your class have on Monday?
B: No, he won't. He'll play for Wales one day. 4. A: Jack'll pass all his exams this year. ( No, most of ) B : No, he won't. 5. A: In 5 years' time, I'll be a poor artist. (No, rich and famous)
B: No, I won't. I'll ba a rich and famous artisr. 6. A: In 10 years' time, you'll be my assistant (No, manager) B : No, you won't. You'll be my manager. Ex2 : Đặt câu hỏi với từ in đậm Our class has Geography on Monday -> ___What subject does your class have on Monday?
LD
23 tháng 3 2017
. Khoanh tròn đáp án đúng
1. When ____________ the school?
C)did you join
2. _____________in England?
B)Have you ever worked
3.That's the best speech _________
D)I've ever heard
4. He's the most difficult housemate _____________________
C)I've ever had to deal with.
5.______ to him last week.
A)I spoke
6._____a contract last year and it is still valid.
B)We signed
7.______ from a business trip to France.
D)I've just come back
8. Prices ________ in 1995 but then _____in 1996.
B)rose_fell
9. You____________to a word____________
D)haven't listened_I've said back
10. I can't believe that ________________ the news
A)you haven't read
D
23 tháng 3 2017
Khoanh tròn đáp án đúng
1. When ____________ the school?
A)have you joined
B)did you joined
C)did you join
D)have you ever joined
2. _____________in England?
A)Did you ever worked
B)Have you ever worked
C)Worked you
D)Didn't you have worked
3.That's the best speech _________
A)I never heard
B)I didn't hear
C)I used to hear
D)I've ever heard
4. He's the most difficult housemate _____________________
A)I never dealt with.
B)I never had to deal with.
C)I've ever had to deal with.
D)I've never had to deal with
5.
______ to him last week.
A)I spoke
B)I've already spoken
C)I didn't spoke
D)I speaked
6.
_____a contract last year and it is still valid.
A)We have signed
B)We signed
C)We haven't signed
D)We have sign
7.
______ from a business trip to France.
A)I come back
B)I came back
C)I never came back
D)I've just come back
8. Prices ________ in 1995 but then _____in 1996.
A)rised_falled
B)rose_fell
C)have risen_have fallen
D)rose_have fallen
9. You____________to a word____________
A)listened_I haven't said
B)didn't listen_I say
C)listened_saying
D)haven't listened_I've said back
10. I can't believe that ________________ the news
A)you haven't read
B)you didn't read
C)you don't read
D)you read not.
HT
1
12 tháng 7 2019
\(S=1+0,5+0,25+0,125+0,0625+0,03125+...\)
\(S=1+\frac{1}{2}+\frac{1}{4}+\frac{1}{8}+\frac{1}{16}+\frac{1}{32}+...\)
\(2S=2+1+\frac{1}{2}+\frac{1}{4}+\frac{1}{8}+\frac{1}{16}+...\)
\(2S-S=\left(2+1+\frac{1}{2}+\frac{1}{4}+...\right)-\left(1+\frac{1}{2}+\frac{1}{4}+\frac{1}{8}+...\right)\)
\(S=2-...\)
Bạn không ghi rõ số cuối nên mình làm thế này
Mk chỉ bạn cách làm rồi đó
26 tháng 2 2017
- 1/ Jane can swim further than I can. =) I can't swim as far as Jane. 2/ We didn't do the test as quickly as Linh. =) Linh did the test more quickly than we did . 3/ Peter can't run as fast as Tim. =) Tim runs faster than Peter. 4/ John speaks French more fluently than I do. =) I can not speak French as fluently as Jone 5/- Thuy is a more fluent French speaker than Phong. =) Thuy speaks French more fluently than Phong do. 6/ He plays football better than me. =) I don't play football as good as he. 7/ Mrs Hoa doesn't work as hard as her husband. =) Mrs Hoa 's husband works harder than her. 8/ They answered the teacher's question yesterday more intelligently than us. =) We didn't answer the teacher's question as intelligent as them. 9/ Hai couldn't listen to the teacher yesterday as attentively as his friend did. =)Hai's friend listened to the teacher yesterday more attentive than he did.
12 tháng 4 2017
a) =
= -3.
b) =
=
.
hoặc dùng công thức đổi cơ số : =
=
=
.
c) =
=
.
d) =
= 3.
a,(0,125.8)3=13=1
b,(-39:13)4=(-3)4=81