Question

solve this fast fast

Answer 1

$\\(a)\: \frac{3}{\sqrt 0.09}\\\implies \frac{3}{\sqrt{3^{2}\times 10^-2}}\\\implies \frac{3}{\sqrt 9\times (10)^{-2\times\frac{1}{2}}}\\\implies \frac{\cancel{3}}{\cancel{3}\times 10^{-1}}\\\implies \frac{1}{10^{-1}}$

$\\(b)\: [1]\frac{17}{64}\\ \\\implies {\frac{(1\times64)+17}{64}}\\\implies \frac{81}{64}\\\implies \sqrt{\frac{81}{64}}\\ \boxed{\implies \frac{9}{8}}$

$(c)\: All \:possible \:numbers \:that\: are\: a \:perfect \:square \:have\\ a \:digital \:root \:of\: 1, 4, 7, 9.So, \:2918 \:is \:not \:a \:perfect \:square.$