Answer & Step-by-step explanation:
First, we must know the distance formula.
[tex]Distance(d)=\sqrt{(x2-x1)^2+(y2-y1)^2}[/tex]
Know, we plug in our numbers for x1, y1, x2, and y2.
[tex]d=\sqrt{(2-(-8))^2+(2-(-4))^2}[/tex]
[tex]d=\sqrt{(10)^2+(6)^2}[/tex]
[tex]d=\sqrt{100+36}[/tex]
[tex]d=\sqrt{136}[/tex]
[tex]d=11.7[/tex]
So, the distance between C and D is 11.7 units.