+0  
 
0
1034
2
avatar

how to do x10 to the power of a minus number

 May 20, 2016
 #1
avatar
0

\({1x}^{-1} = 1\left ( \frac{1}{x}\right ) = \frac{1}{x}\)

 

\({2x}^{-2} = 2\left ( \frac{1}{{x}^{2}} \right ) = \frac{2}{{x}^{2}}\)

 

\(\frac{2}{3}{x}^{-2} = \frac{2}{3}\left ( \frac{1}{{x}^{2}} \right ) = \frac{2}{3{x}^{2}}\)

 

 

\(\times {10}^{-1} = \times \frac{1}{{10}^{1}}\)which is the same as dividing by 10

 

\(35\times{10}^{-2}\)     \(=\)     \(35\times\frac{1}{{10}^{2}}\)     \(=\)     \(35\times\frac{1}{100}\)     \(=\)     \(\frac{35}{100} = 0.35\)

 May 20, 2016
edited by Guest  May 20, 2016
edited by Guest  May 20, 2016
edited by Guest  May 20, 2016
edited by Guest  May 20, 2016
 #2
avatar
0

To do 10 x 10-2, move the decimal place along two (same as dividing by 102 which is 100)

i.e. 10/100 = 0.10

 

10 x 10-3, move the decimal place along two (same as dividing by 103 which is 1000)

i.e. 10/1000 = 0.01

 May 20, 2016

1 Online Users