Question 3

loading...

Prev/Next links

waecmaths question: 

Simplify $(0.3\times {{10}^{5}})\div (0.4\times {{10}^{7}})$ leaving your answer in the standard form

Option A: 

$7.5\times {{10}^{-4}}$

Option B: 

$7.5\times {{10}^{-3}}$

Option C: 

$7.5\times {{10}^{-2}}$

Option D: 

$7.5\times {{10}^{-1}}$

waecmaths solution: 

$\begin{align}  & (0.3\times {{10}^{5}})\div (0.4\times {{10}^{7}})=\frac{0.3\times {{10}^{5}}}{0.4\times {{10}^{7}}} \\ & =0.75\times {{10}^{-2}} \\ & =7.5\times {{10}^{-3}} \end{align}$

maths year: 
maths topics: