Mathematics
rayahills14:

Billy is trying to convince Sam that all square roots are irrational. To support his argument, Billy points out that sqrt(2), sqrt(6), sqrt(7), and sqrt(15) are all irrational. Since this set of numbers contains the square roots of both prime and composite numbers as well as even and odd numbers, Billy argues that there is no number (prime, composite, even, or odd) whose square root is rational. Thus, all square roots must be irrational. Where has Billy made his error?

5 months ago
Vocaloid:

whether a number is even/odd/prime/composite does not determine whether its square root is rational. for a square root to be rational, the radicand must be a perfect square, of which there are many examples (ex. sqrt(4) = 2)

5 months ago
Latest Questions
eviant: Math help pls
3 hours ago 3 Replies 0 Medals
eviant: Math help pls
3 hours ago 5 Replies 1 Medal
eviant: Math help pls
3 hours ago 16 Replies 1 Medal
eviant: Math help pls
4 hours ago 9 Replies 3 Medals
RichardWatterson7: IF U COULD HAVE ANY POWER FROM ANY ANIME WHAT ANIME WOULD IT BE FROM!!!!!
5 hours ago 41 Replies 6 Medals
BrooklynnNewYork: What is energy?
11 hours ago 13 Replies 2 Medals
Hanna: Chemistry help?!
12 hours ago 7 Replies 2 Medals