Question
In the equation $$\frac{{4050}}{{\sqrt x }} = 450{\text{,}}$$ the value of x is = ?
Answer: Option C
$$\eqalign{
& \frac{{4050}}{{\sqrt x }} = 450 \cr
& \Leftrightarrow \sqrt x = \frac{{4050}}{{450}} \cr
& \Leftrightarrow \sqrt x = 9 \cr
& \Leftrightarrow x = {\left( 9 \right)^2} \cr
& \Leftrightarrow x = 81 \cr} $$
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$$\eqalign{
& \frac{{4050}}{{\sqrt x }} = 450 \cr
& \Leftrightarrow \sqrt x = \frac{{4050}}{{450}} \cr
& \Leftrightarrow \sqrt x = 9 \cr
& \Leftrightarrow x = {\left( 9 \right)^2} \cr
& \Leftrightarrow x = 81 \cr} $$
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