Answer
(a) $1.2954\times10^{8}$
(b) $7.259\times10^{9}$
(c) $1.4\times10^{-9}$
(d) $7.029\times10^{-4}$
Work Step by Step
(a) $129,540,000=1.2954\times10^{8}$. Move the decimal point 8 spaces to the left.
(b) $7,259,000,000=7.259\times10^{9}$. Move the decimal point 9 spaces to the left.
(c) $0.0000000014=1.4\times10^{-9}$. Move the decimal point 9 spaces to the right.
(d) $0.0007029=7.029\times 10^{-4}$. Move the decimal point 4 spaces to the right.
