Question

Please help!!

some of the following expressions are rational , circle which ones are rational

a) -99/9
b ) √ 4/4
c ) √ 2/2
d ) √ 16/4

Answer 1

A,b and d are rational

When reduced, the numbers are
A)-11
B)v1 or 1
C)v2
D)v4 or 2

A number is rational if it can be represented by a fraction. All of these can be(besides c). The square root of 2 is unable to be represented in a fraction form just like pi so it is an irrational number, not a rational number. However, all of these are considered real numbers