Question

Which expression is equivalent to 1/27?

Answer 1

D 3^3 *3^-7

Explanation:

1/27 = 1/3^3 = 3^-3

When multiplying with the same base, add the exponents

A 3^1 * 3^-10 = 3^-9

B 3^-1 * 3^10 = 3^9

C 3^-4 * 3^7 = 3^3

D 3^3 *3^-7 = 3^-3