Evaluate each of the following, without the use of a calculator. ${{\left( 0.8 \right)}^{-1}}$ \({

Question

Evaluate each of the following, without the use of a calculator. ${{\left( 0.8 \right)}^{-1}}$ ${{5}^{-2}}$ ${{\left( 3x \right)}^{0}}\div 3{{x}^{-1}}$ $1\div {{\left( 5x \right)}^{-2}}$ ${{3}^{0}}-{{3}^{-3}}\times 27$ ${{9}^{0}}\times {{\left( \frac{1}{9} \right)}^{-1}}\times {{81}^{-1}}$

Accepted Answer

(i) $1\frac14$. (ii) $\frac1{25}$. (iii) $\frac{x}{3}$. (iv) $25x^2$. (v) $0$. (vi) $\frac19$.

Evaluate Powers with Negative and Zero Indices

Evaluate Powers with Negative and Zero Indices

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