Question

x : 0,16 = 9 : x

GIÚP MK NHA 

Answer 1

x:0,16 = 9:x

x:0,16.x=9

x²:0,16=9

     x²   =9.0,16

     x²   =1,44

     x²  = (6/5)²

=> x    = 6/5

Vậy x =6/5

Answer 2

Ủng hộ mk nha

Answer 3

Ta có: x : 0,16 = 9 : x

Hay \(\frac{x}{0,16}=\frac{9}{x}\)

=> \(x^2=0,16.9\)

=> \(x^2=1,44\)

=> x = 1,2 ; x = -1,2

Answer 4

\(x:0,16=9:x\)

=> \(x:\frac{4}{25}=9:x\)

=> \(x.x=9.\frac{4}{25}\)

=> \(x^2=\frac{36}{25}\)

=> \(x\in\left\{\frac{6}{5};\frac{-6}{5}\right\}\)

Answer 5

\(\frac{x}{0,16}=\frac{9}{x}\Rightarrow x^2=9×0,16\Leftrightarrow x^2=\frac{36}{25}\Leftrightarrow x=\hept{\begin{cases}-1,2\\1,2\end{cases}}\)

Answer 6

x : 0,16 = 9 : x

\(\Leftrightarrow\frac{x}{0,16}=\frac{9}{x}\)

\(\Leftrightarrow x^2=9\times0,16=1,44\)

\(\Leftrightarrow\orbr{\begin{cases}x=1,2\\x=-1,2\end{cases}}\)

Vậy x = 1,2 hoặc x = -1,2

Answer 7

x:0,16=9:6

=>\(\frac{x}{0,16}=\frac{9}{x}\)

=>x²=0,16.9

=>x²=1,44

=>\(\hept{\begin{cases}x=12\\x=-12\end{cases}}\)

Chúc bạn học giỏi nha!!!

Answer 8

x:0,16 = 9:x

x:0,16.x=9

x²:0,16=9

x²   =9.0,16

x²   =1,44

x²  = (6/5)²

=> x    = 6/5

Vậy x =6/5

Answer 9

x:0,16 = 9:x

x:0,16.x=9

x²:0,16=9

x²   =9.0,16

x²   =1,44

x²  = (6/5)²

=> x    = 6/5

Vậy x =6/5

Answer 10

x:0,16 = 9:x

x:0,16.x=9

x²:0,16=9

x²   =9.0,16

x²   =1,44

x²  = (6/5)²

=> x    = 6/5

Vậy x =6/5

Answer 11

Ta có: $$

=> 3.(x-4) = 4.(y-3)

=> 3x - 12 = 4y - 12

=> 3x - 4y = -12 + 12

=> 3x - 4y = 0

=> 3x = 4y

Answer 12

x:0,16 = 9:x

x:0,16.x=9

x²:0,16=9

x²   =9.0,16

x²   =1,44

x²  = (6/5)²

=> x    = 6/5

Vậy x =6/5