Rational. equals 12
irrational. =4✓3
rational. equals 5
rational. equals 21
Answer:
Step-by-step explanation:
It's going to be number 4
5^-3 is 1/125
The negative in the exponent makes it so there is a 1 over the problem if there was no negative. When you have a negative in the exponent, the answer will be the reciprocal (opposite) of the question with no negative.
For example,
9^2 = 81
9^-2 = 1/81
