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nerdyotter
 one year ago
When the point (–5, 7) is dilated with the center of dilation at the origin, the image of the point is (–18.5, 25.9). What is the scale factor of this dilation?
nerdyotter
 one year ago
When the point (–5, 7) is dilated with the center of dilation at the origin, the image of the point is (–18.5, 25.9). What is the scale factor of this dilation?

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nerdyotter
 one year ago
Best ResponseYou've already chosen the best response.0Answers: a.) 18.9 b.) 13.5 c.) 7.3 d.) 3.7

LynFran
 one year ago
Best ResponseYou've already chosen the best response.1another way to do this is..

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0The point (5,7) has a distance from the origin of \[\sqrt{74}\] (using distance formula or pythagorean theorem) and the point (18.5, 25.9) has distance from the origin of \[\sqrt{1013.06}\approx31.8286\] (againg, with distance formula or pythagorean theorem), then we divide both distances getting \[\frac{ \sqrt{1013.06} }{ \sqrt{74} }=3.7\] Alternative D

LynFran
 one year ago
Best ResponseYou've already chosen the best response.1\[5k+0=18.5\]\[5k=18.5\]\[k=18.5/5\]\[k=3.7\] ...\[0+7k=25.9\]\[7k=25.9\]\[k=25.9/7\]\[k=3.7\]
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