104/30=??/?
Hãy nhập câu hỏi của bạn vào đây, nếu là tài khoản VIP, bạn sẽ được ưu tiên trả lời.
\(30\%\times y+y=104\)
\(\Leftrightarrow0,3\times y+y=104\)
\(\Leftrightarrow1,3y=104\)
\(\Leftrightarrow y=104:1,3\)
\(\Leftrightarrow y=80\)
Vậy \(y=80\)
a) 26 : 104 = 0,25 = 25%
b) 4,5 : 90 = 0,05 = 5%
c) 2,7 : 7,5 = 0,36 = 36%
a) 52(-43)-52(55)-104
=52(-43)-52*55-52*2
=52(-43-55-2)
=52(-100)=-5200
`#3107.101107`
\(\left(\dfrac{2}{3}\right)^x+\left(\dfrac{2}{3}\right)^{x+2}=\dfrac{104}{243}?\)
\(\Rightarrow\left(\dfrac{2}{3}\right)^x+\left(\dfrac{2}{3}\right)^x\cdot\left(\dfrac{2}{3}\right)^2=\dfrac{104}{243}\)
\(\Rightarrow\left(\dfrac{2}{3}\right)^x\cdot\left(1+\dfrac{2^2}{3^2}\right)=\dfrac{104}{243}\)
\(\Rightarrow\left(\dfrac{2}{3}\right)^x\cdot\left(1+\dfrac{4}{9}\right)=\dfrac{104}{243}\)
\(\Rightarrow\left(\dfrac{2}{3}\right)^x\cdot\dfrac{13}{9}=\dfrac{104}{243}\)
\(\Rightarrow\left(\dfrac{2}{3}\right)^x=\dfrac{104}{243}\div\dfrac{13}{9}\)
\(\Rightarrow\left(\dfrac{2}{3}\right)^x=\dfrac{8}{27}\)
\(\Rightarrow\left(\dfrac{2}{3}\right)^x=\dfrac{2^3}{3^3}\)
\(\Rightarrow\left(\dfrac{2}{3}\right)^x=\left(\dfrac{2}{3}\right)^3\)
\(\Rightarrow x=3\)
Vậy, `x = 3.`
a) 30oC = 86oF
b) 45oC = 113oF
c) 50oC = 122oF
d) 68oF = 20oC
e) 104oF = 40oC
f) 86oF = 30oC
1. We go to bed on 9 o’clock.
A. Go B. To bed C. On
2. May watchs TV at 8 o’clock.
A. Watchs B. at C. 8 o’clock
I gets upat5:30.
A. Gets up B. at C. 5:30
4. Tony and Mary has dinner at 6:30
A. And B. Has C. Dinner
5. His brother do his homework in the evening
A. Do B. His C. In the evening
\(\dfrac{104}{30}=\dfrac{104:2}{30:2}=\dfrac{52}{15}\)
ý mình là hỗn số ý