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OpenStudy (anonymous):
If A = (7, 9) and B = (3, 12), what is the length of ? A. 7 units B. 5 units C. 4 units D. 6 units
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OpenStudy (alexandervonhumboldt2):
use distance formula: sqrt((x1-x2)^2+(y1-y2)^2)
OpenStudy (alexandervonhumboldt2):
solve this: sqrt((7-3)^2+(9-12)^2)
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