SAT Math Question of the Day

Math Category: Exponents Level 1:

Q: What is 10-1?

  1. -1/9
  2. -1/10
  3. 1
  4. 1/10
  5. 1/9

UNANSWERED.

The correct answer is D.

A: The answer is 1/10. A number to the -1 power is 1 divided by the number.