Express the following number in the standard form :
(a) `7584300`
(b) `493.8721`
(c) `5.876`
(d) `0.0000079`

Explanation

(a) `7584300 =7.5843xx10^6`
(b) `493.8721 =4.938721xx10^2`
(c) `5.876 =5.876xx10^0`
(d) `0.0000079 =7.9xx10^(-6)`