10)
[tex]d=\sqrt{(-2-1)^2+(5-2)^2+(0-3)^2}=\sqrt{(-3)^2+3^2+(-3)^2}=\\\\=\sqrt{9+9+9}=\sqrt{27}\approx\boxed{5.196}[/tex]
Answer C)
11)
[tex]M=\left(\dfrac{0+4}{2},\dfrac{-2+(-4)}{2},\dfrac{3+4}{2}\right)=\left(\dfrac{4}{2},\dfrac{-6}{2},\dfrac{7}{2}\right)=\boxed{(2,-3,3.5)}[/tex]
Answer D)
