Answer:
8.5 units
Step-by-step explanation:
The distance between two points is given by
[tex]d=\sqrt{(x_2-x_1)^{2}+(y_2-y_1)^{2}}[/tex]
Taking points (-12, 11) and (-18, 17) as the first and second points respectively then
[tex]d=\sqrt{(-18--12)^{2}+(17-11)^{2}}[/tex]
[tex]d=\sqrt {36+36}[/tex]
d=8.48528137423857 units
Rounded off to nearest tenths
d=8.5 units
