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nphuongsun93 Group TitleBest ResponseYou've already chosen the best response.1
first one, the two triangles are similar with ratio 5:3 a/b = 3/5 b/(8+a) = 3/5 second one, they are similar too x/ (x+5) = (x2)/(2x1) solves those
 one year ago

meadowlark Group TitleBest ResponseYou've already chosen the best response.0
Oh, I solved the second one! :D I don't understand the equation you gave for the first... I just do the second equation b/(8+a) = 3/5?
 one year ago

nphuongsun93 Group TitleBest ResponseYou've already chosen the best response.1
which one did u do? a/b = 3/5 5a = 3b b/(8+a) = 3/5 5b = 24 + 3a 5a = 3b * 5 25 a = 15 b 24 + 3a = 5b * 3 72 + 9a = 15b 72 + 16a = 0 a = 4.5 substitute back in to find b
 one year ago

meadowlark Group TitleBest ResponseYou've already chosen the best response.0
I did, a couple of times but I'm no getting any of the multiple choice. The closest I'm getting to is the third one, c.... Is it C?
 one year ago

nphuongsun93 Group TitleBest ResponseYou've already chosen the best response.1
a = 4.5 = 9/2 5a = 3b 5 (9/2) = 3b 15/2 = b
 one year ago

meadowlark Group TitleBest ResponseYou've already chosen the best response.0
Thank you for your help
 one year ago
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