Mathematics
OpenStudy (anonymous):

do u use the midpoint formula for: # How many units apart are the points (8, 11) and (-1, -1)? cuz i get (3.5,5)

jimthompson5910 (jim_thompson5910):

No, you use the distance formula $\Large d = \sqrt{(x_{1}-x_{2})^2+(y_{1}-y_{2})^2}$

OpenStudy (anonymous):

what did you get here?

OpenStudy (anonymous):

15?

jimthompson5910 (jim_thompson5910):

you got it, nice work

OpenStudy (anonymous):

thnks