Chapter 4.6, Problem 7E

To determine

To write the expression $\frac{1}{27}$ without using the fraction bar.

Answer to Problem 7E

  $3^{-3}$

Explanation of Solution

Given information: $\frac{1}{27}$

To write the expression using positive exponents.

  $\frac{1}{27}$

  $=\frac{1}{3^3}$

  $=3^{-3}$ After changing position of 3 in the fraction, the sign of the exponent reverses for positive to negative and vice versa.