Question

the value of 81 to the power -1/2

Answer 1

value of 81 to power -1/2 is 1/9

Answer 2

${81}^{ - 0.5} = 1 \div {81}^{0.5}$
$= 1 \div \sqrt{81}$
$= 1 \div 9$
$= 0.11$

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