a) The halfway number is [tex]\frac{-4.5}{10}[/tex].
b) The ascending order is [tex]\frac{-1}{2}[/tex],[tex]\frac{-4.5}{10}[/tex]and [tex]\frac{-2}{5}[/tex].
Step-by-step explanation:
a)Halfway number is otherwise Middle number.
The halfway number of two numbers = [tex]\frac{sum of two numbers}{2}[/tex].
The halfway for [tex]\frac{-2}{5}[/tex] and [tex]\frac{-2}{5}[/tex] = [tex]\frac{\frac{-2}{5}+ (\frac{-1}{2})}{2}[/tex].
=[tex]\frac{-2}{5}+ (\frac{-1}{2})[/tex].
= [tex]\frac{-4-5}{10}[/tex].
=[tex]\frac{-9}{10}[/tex].
∴Halfway =[tex]\frac{\frac{-9}{10} }{2}[/tex].
=[tex]\frac{-4.5}{10}[/tex]
The halfway for [tex]\frac{-2}{5}[/tex] and [tex]\frac{-1}{2}[/tex]= [tex]\frac{-4.5}{10}[/tex].
b) The ascending order is [tex]\frac{-1}{2}[/tex],[tex]\frac{-4.5}{10}[/tex]and [tex]\frac{-2}{5}[/tex].
