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Mathematics 7 Online
OpenStudy (anonymous):

What is the distance between points (12, 4) and (18, –1)? Round to the nearest tenth. 7.8 , 6.1, 4.7, 9.9

OpenStudy (amistre64):

subtract the points and pythag them

OpenStudy (amistre64):

(18, –1) -(12, 4) ------- 6,-5 ; sqrt(36+25) sqrt(61)

OpenStudy (amistre64):

7.8 7.8 ---- 4964 560 560 ----- 60.84 well, it more than 7.8 by a little

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