98.8k views
4 votes
Which of the following is an irrational number?

A. √1

B. √49

C. √9

D. √80

User Shaba
by
4.9k points

2 Answers

2 votes

D. Square Root of 80

User Olinasc
by
5.2k points
4 votes

Answer:

D

Explanation:

Only perfect squares can be rational numbers. the square root of 80 is the only one that is not a perfect square.

User Jeniece
by
4.6k points