Simplify ((0.3times 10^{5})div (0.4times 10^{7}))leaving your answer in standard form
-
A.
(7.5times 10^{-4}) -
B.
(7.5times 10^{-3}) -
C.
(7.5times 10^{-2}) -
D.
(7.5times 10^{-1})
Correct Answer: Option B
Explanation
((0.3times 10^{5})div (0.4times 10^{7})\
frac{3}{10}times 10^{5}div frac{4}{10}times 10^{7}=3times 10^{4}div 4times 10^{6}\
frac{3times 10^{4}}{4times 10^{7}}=frac{3}{4}times 10^{-2}=0.75times 10^{-2}\
7.5times 10^{-3})