I just need someone to check if I did this right.Find the distance between (-2, 8) and (11, 2). Round to the nearest hundredth. The answer I got was 89. Did I do anything wrong?

Question

anonymous · Answer

seems unlikely for the distance to be that large
did you forget the square root?

anonymous · Answer

I'm supposed to square 89, aren't I..

anonymous · Answer

I now got 9.43...

jim_thompson5910 · Answer

how did you get 89?

anonymous · Answer

Well.. I used the distance formula

jim_thompson5910 · Answer

so you would have done

subtract x coordinates:  11 - (-2) = 11 + 2 = 13
subtract y coordinates:  2 - 8 = -6


then square each difference:  13^2 = 169   and (-6)^2 = 36


after that you add the two squares:  169 + 36 = 205

jim_thompson5910 · Answer

the last step is to take the square root of 205 to get sqrt(205) = 14.3178210632763 roughly

that rounds to 14.32

jim_thompson5910 · Answer

hopefully you can spot where you went wrong

anonymous · Answer

yeah i see it. I didn't change the negative 2 into a positive

jim_thompson5910 · Answer

ah glad you caught your error

anonymous · Answer

yeah ha. I remember doing this but I guess it just slipped my mind thank you for pointing that out to me. I would've never caught it

jim_thompson5910 · Answer

you're welcome