Question #e5914

1 Answer
Hope W.
Mar 30, 2016

Rational

Explanation:

Rational numbers are characterized as numbers that can be expressed by #p/q#. In order for a number to be rational, it must have the ability to be expressed as a fraction.

Rational examples: #sqrt(4)#, #2.7#, #128#, #-36#
Irrational examples: #sqrt(2)#, #sqrt(7)#, #pi#

#-4.2# can be expressed as the fraction #(-21)/5#
Therefore it is rational.

Related questions
See all questions in Properties of Rational Numbers
Impact of this question
1704 views around the world
You can reuse this answer
Creative Commons License