Question

Whal term con you use to describe the numbers in set 19

Answer 1

Let's check them if they obeys rationality

• 4.2=42/10
• 1.6=16/10
• 1.05=105/100
• 0.8=8/10

Yes they do

So they belongs to set of rational numbers i.e Q

Answer 2

Answer:

a) rational numbers

**the completed number lines are attached**

Step-by-step explanation:

a) The numbers in set 1 are all rational numbers as they can all be written in the form $\dfrac{p}{q}$ where q ≠ 0.

$4.2 =\dfrac{21}{5}$

$1.6=\dfrac85$

$1.05=\dfrac{21}{20}$

$0.8=\dfrac45$