SOLUTION: Hi just need your help to find the distance between these two given points. (-3, -7) (-4, 15) Thanks for your help :o)

Algebra ->  Expressions -> SOLUTION: Hi just need your help to find the distance between these two given points. (-3, -7) (-4, 15) Thanks for your help :o)      Log On


   

Question 416494: Hi just need your help to find the distance between these two given points.
(-3, -7) (-4, 15)
Thanks for your help :o)
Answer by jim_thompson5910(35256) About Me  (Show Source):
You can put this solution on YOUR website!

d=sqrt%28%28x%5B1%5D-x%5B2%5D%29%5E2%2B%28y%5B1%5D-y%5B2%5D%29%5E2%29 Start with the distance formula.


d=sqrt%28%28-3--4%29%5E2%2B%28-7-15%29%5E2%29 Plug in x%5B1%5D=-3, x%5B2%5D=-4, y%5B1%5D=-7, and y%5B2%5D=15.


d=sqrt%28%281%29%5E2%2B%28-7-15%29%5E2%29 Subtract -4 from -3 to get 1.


d=sqrt%28%281%29%5E2%2B%28-22%29%5E2%29 Subtract 15 from -7 to get -22.


d=sqrt%281%2B%28-22%29%5E2%29 Square 1 to get 1.


d=sqrt%281%2B484%29 Square -22 to get 484.


d=sqrt%28485%29 Add 1 to 484 to get 485.


d=sqrt%28485%29 Simplify the square root.


So the exact distance is d=sqrt%28485%29


Which approximates to d=22.023


So the distance between the two points is approximately 22.023 units.


If you need more help, email me at jim_thompson5910@hotmail.com

Also, please consider visiting my website: http://www.freewebs.com/jimthompson5910/home.html and making a donation. Thank you

Jim