Question

How to solve
3×10^8÷400×10^-9​

Answer 1

Answer:

$3.10^8$ ÷ $400.10^{-9}$ $=7.5$ x $10^{14}$

Step-by-step explanation:

$3.10^8$ ÷ $400.10^{-9}$

$=\frac{3.10^8}{400.10^{-9}}$

$=\frac{3.10^8}{4.10^{(2-9)}}$

$=0.75[10^{(8-(-7))}]$

$=0.75[10^{(8+7)}]$

$=0.75(10^{15})$

$=7.5$ x $10^{14}$