Express the number in exponential notation:
(a) 563
(b) 0.0012
(c) 43,900,000
(d) 0.0000007190

Explanation

(a) `5.63xx10^(2)`
(b) `1.2xx10^(-3)`
(c) `4.39xx10^(7)`
(d) `7.19xx10^(-7)`.