Answer:
the second answer is right
Step-by-step explanation:
while it is true that W=25/8, the definition itself (25/8) makes it a rational number (= a ratio of 2 integer numbers). so, in total, the first answer is therefore wrong.
X=pi, and pi is a typical example of an irrational number. so, this second answer is correct.
sqrt(10) < 3.16666666666...
so, Y=sqrt(10) and not 3.166666666..., so the third answer is already wrong there.
and consequently, Z=3.166666... and not sqrt(10), so the fourth answer is therefore also wrong.
= -2
