Answer:
(a) d = √((13 - (-3))² + (6 - (-16))²)
= √(16² + 22²) = √(256 + 484) = √740
= 2√185
(b) midpoint of AB
= ((13 + (-3))/2, (6 + (-16))/2)
= (10/2, -10/2) = (5, -5)
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