Answer:
16.3 units ( to 1 dec. place )
Step-by-step explanation:
Using the distance formula
d = √ (x₂ - x₁ )² + (y₂ - y₁ )²
with (x₁, y₁ ) = A(- 1, 3) and (x₂, y₂ ) = B(11, - 8)
AB = [tex]\sqrt{(11+1)^2+(-8-3)^2}[/tex]
= [tex]\sqrt{12^2+(-11)^2}[/tex]
= [tex]\sqrt{144+121}[/tex]
= [tex]\sqrt{265}[/tex] ≈ 16.3 ( to 1 dec. place )
