Select the correct description for each number set.(4 points)

Question

a) (25−−√, 9, −−−√64−−√) - Rational, Irrational, or both
b) ( -2.4, 0, 3.1, 81−−√) - Rational, Irrational, or both
x) (−2/3, 7/9, π/2) - Rational, Irrational, or both
d) (12−−√, 11−−√, π) - Rational, Irrational, or both

Answer 1

a) (25−−√, 9, −−−√64−−√) - Irrational (square roots of 25 and 64 are irrational), Rational (9 is a rational number)
b) ( -2.4, 0, 3.1, 81−−√) - Rational (decimal numbers are rational), Irrational (square root of 81 is irrational)
x) (−2/3, 7/9, π/2) - Rational (fractions are rational), Irrational (π is irrational)
d) (12−−√, 11−−√, π) - Irrational (square roots are irrational), Irrational (π is irrational)