1:1=.....,help me
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NT
2
27 tháng 12 2018
24 - 16(x - 1/2) = 23
=> 16(x - 1/2) = 24 - 23
=> 16(x - 1/2) = 1
=> x - 1/2 = 1/16
=> x = 1/16 + 1/2
=> x = 9/16
27 tháng 12 2018
\(24-16(x-\frac{1}{2})=23\)
\(16(x-\frac{1}{2})=24-23\)
\(16(x-\frac{1}{2})=1\)
\(x-\frac{1}{2}=\frac{1}{16}\)
\(x=\frac{1}{16}+\frac{1}{2}\)
\(x=\frac{9}{16}\)
Vậy số thực x cần tìm là \(\frac{9}{16}\)
Chúc bạn hok tốt ~
13 tháng 2 2022
\(A=\dfrac{1}{2}\left(1-\dfrac{1}{3}+\dfrac{1}{3}-\dfrac{1}{5}+...+\dfrac{1}{99}-\dfrac{1}{101}\right)=\dfrac{1}{2}\left(\dfrac{100}{101}\right)=\dfrac{50}{101}\)
13 tháng 2 2022
\(A=\dfrac{1}{2}\left(\dfrac{2}{1\cdot3}+\dfrac{2}{3\cdot5}+...+\dfrac{2}{99\cdot101}\right)\)
\(=\dfrac{1}{2}\left(1-\dfrac{1}{3}+\dfrac{1}{3}-\dfrac{1}{5}+...+\dfrac{1}{99}-\dfrac{1}{101}\right)=\dfrac{1}{2}\cdot\dfrac{100}{101}=\dfrac{50}{101}\)
TH
7
27 tháng 11 2019
2 câu này có nghĩa
Câu 1. nếu bạn trả lời câu hỏi này, bạn ... điên.
Câu 2. Nếu bạn giúp tôi, bạn ... yêu tôi.
NH
16 tháng 6 2023
`1/2+(-1/57)+1/3+1/6`
`=(1/2+1/3+1/6)-1/57`
`=(3/6+2/6+1/6)-1/57`
`=6/6-1/57`
`=1-1/57`
`=57/57-1/57`
`=56/57`
9 tháng 5 2017
I can help you!
Giải
Ta có:\(\frac{x}{5}+1=\frac{1}{y-1}\)
\(\Rightarrow\frac{x}{5}+\frac{5}{5}=\frac{1}{y-1}\)
\(\Rightarrow\frac{x+5}{5}=\frac{1}{y-1}\)
\(\Leftrightarrow\left(x+5\right).\left(y-1\right)=5\)
Vì \(x;y\in Z\)
\(\Rightarrow x+5;y-1\in Z\)
\(\Rightarrow x+5;y-1\inƯ\left(5\right)=\left\{-5;-1;1;5\right\}\)
Ta lập bảng:
| x + 5 | -5 | -1 | 1 | 5 |
| y - 1 | -1 | -5 | 5 | 1 |
| x | -10 | -6 | -4 | 0 |
| y | 0 | -4 | 6 | 2 |
Vậy có 4 cặp ( x ; y ) cần tìm.
~~~~~~~~ *** ~~~~~
DT
Đỗ Thanh Hải
CTVVIP
21 tháng 9 2021
1. Not only…………………………………………..
a. he refused to help me but he also made fun of me
b. did he refuse to help me but he made fun of me also
c. did he refuse to help me but he also made fun of me
d. he did refuse to help me but also made fun of me
2. ………………………..had she open the cupboard than she stood in front of it petrified
a. No sooner b.As soon as c. Hardly d.The fact
3. …………………….with enough life-boats she wouldn’t have caused so heavy casualties
a. Were the Titanic to be equiped
b. The Titanic were to be equiped
c. The Titanic was to be equiped
d. Had the Titanic been equiped
4. It was not until the doctors asked him to comment on his death……………recognised their craziness
a. when he b.and he c. that he d.he
5. George would certainly have attended the meeting…………………
a. if he didn’t get a flat tire
b. if the flat tire hadn’t happened
c. had he not had a flat tire
d. had the tire not flatterned itselt
6. ………………………..received law degrees as today
a. Never so many women have
b. Never have so many women
c. The women aren’t ever
d. Women who have never
7. ……………..during his dinner with us
a. Not did my grandfather say single word
b. Not said a single word did my grandfather
c. Not my grandfather said a single word
d. Not a single word did my grandfather say
8. There is no water on the moon , nor …………………..an atmosphere around it
a. there is b. it is c. there is not d.is there
9. …………………the work when his wife came in with two policemen
a. Had he hardly finished
b. Had hardly he finished
c. Hardly he had finished
d. Hardly had he finished
10. Not until the first land plants developed………………
a. land animals appeared
b. did land animals appear
c. would land animals appear
d. the land animals appeared
TL:
1:1=1
HT
1 : 1 = 1