SOLUTION: will someone help me find the distance between (2,0) and (-5,0)for some reason i think i know the answer but i can't do the problem in my head i get 7 as the answer but i can't sol

Algebra ->  Algebra  -> Radicals -> SOLUTION: will someone help me find the distance between (2,0) and (-5,0)for some reason i think i know the answer but i can't do the problem in my head i get 7 as the answer but i can't sol      Log On

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Question 78885: will someone help me find the distance between (2,0) and (-5,0)for some reason i think i know the answer but i can't do the problem in my head i get 7 as the answer but i can't solve it on paper help me please?
Answer by Earlsdon(6103) About Me  (Show Source):
You can put this solution on YOUR website!
Your answer is correct!
The distance (d) between the points (2, 0) and (-5, 0) is found by:
d+=+sqrt%28%28x%5B2%5D-x%5B1%5D%29%5E2%2B%28y%5B2%5D-y%5B1%5D%29%5E2%29 here: x%5B1%5D+=+2, y%5B1%5D+=+0, x%5B2%5D+=+-5, and y%5B2%5D+=+0 Making the appropriate substitutions, we get:
d+=+sqrt%28%28-5-2%29%5E2%2B%280-0%29%5E2%29
d+=+sqrt%28%28-7%29%5E2%29
d+=+sqrt%2849%29
d+=+7 We discard the negative answer as distance is a positive value.