Question

If A(5, -8) and B(-7,-3) then d(A,B) = ?

Answer 1

Answer:

If a%3Ab+=c%3Ad+=5%3A7, find %28a%2Bc%29%3A%28b%2Bd%29

a%3Ab+=5%3A7

7a=5b

a=5b%2F7

c%3Ad+=5%3A7

7c=5d

c=5d%2F7

=>

%28a%2Bc%29%3A%28b%2Bd%29

=%285b%2F7%2B5d%2F7%29%3A%28b%2Bd%29

=%28%285b%2B5d%29%2F7%29%3A%28b%2Bd%29

=%285%28b%2Bd%29%29%2F7%29%3A%28b%2Bd%29

=%285%28b%2Bd%29%29%2F7%29%2F%28b%2Bd%29

=5%28b%2Bd%29%2F7%28b%2Bd%29

=5%2F7