线段AB,AB延长线上取一点C,使BC=3AB,BA延长线上取一点D,使DA=3/2AB,E是DB中点,且EB=30cm,求DC的长.

已知线段ab,在ab的延长线上取一点c,使线段BC=AB再在AB的反向延长线上取一点D,使AD=2AB,已知DC=48,求AB,DB的长 已知线段AB,在AB的延长线上取一点C,使AC=2BC,在AB的反向延长线上取一点D,使DA=2AB,那么线段AC是线段DB的( )倍? 在线段AB的延长线上取一点C,使BC=2AB,再在BA的延长线上取一点D.使DA=3AB,则线段AC是线段BD的几分之几. 已知AB,在AB的延长线上取一点C,使AC=2BC,在AB的反向延长线上取一点D,使DA=2AB,那么线段AC是线段DB的多少倍? 已知线段AB,在AB在延长线上取一点C,使BC=3AB..已知线段AB,在AB在延长线上取一点C,使BC=3AB,在BA的延长线上取一点D,使DA=二分之三AB,E是DB的中点,且EB=30CM,求DC的长.要用方程! 已知线段AB,在AB的延长线上取一点C,使BC=AB,在BA的延长线上取一点D,使DA=2AB,如果DC=a,那么AB=（ ）BD=（ ） 已知线段AB,如图,在AB的延长线上取一点C,使BC=AB,在AB的反向延长线上取一点D,是DA=?AB,点E 已知线段AB,在AB延长线上取一点C,使B为AC的中点,在AB反延长线上取点D,使AD=2AB,则线段CD使BC得多少倍 已知线段AB=4厘米,在线段AB上取点M,使AM=BM,在AB的延长线上取一点C画线段AB=4cm,在线段AB上取一点M,使AM=BM,在线段AB的延长线上取一点C,使AC=3BC,在线段BA的延长线上取一点D,使AD=1/2AB.(1)求线段BC DC的 线段AB,AB延长线上取一点C,使BC=3AB,BA延长线上取一点D,使DA=3/2AB,E是DB中点,且EB=30cm,求DC的长. 已知线段AB,AB的延长线上取一点C,使BC=2AB,在BA的延长线上取一点D,使DA=2分之3AB,E是DB的中点=30厘米 已知线段AB,在AB的延长线上取一点C,使AC=2BC,在AB的反向延长线上取一点D,使DA=2AB,则AC：DB=? 已知线段AB,在AB的延长线上取一点C,使BC=AB,在BA的延长线上取一点D,使DA=2AB,求DB的长3分钟可以吗?有奖赏哦 已知线段AB,在AB的延长线上取一点C,使AC=2BC,在AB的方向延长线已知在AB的延长线上取一点C,使AC=2BC,在AB的反向延长线取一点D,使AD=2AB,那么线段CD是线段BC的几倍? 已知线段AB,在AB的延长线上取一点C,使BC=3AB,在BA的延长线上取一点D,使DA=3/2AB.已知线段AB,在AB的延长线上取一点C,使BC=3AB,在BA的延长线上取一点D,使DA=3/2AB,E是DB中点,且EB=30厘米,求DC的长 已知线段AB,在AB的延长线上取一点C,使BC=AB,在BA的延长线上取一点D,使DA=2AB.已知线段AB,在AB的延长线上取一点C,使BC=AB,在BA的延长线上取一点D,使DA=2AB,E是DB中点,且EB=30厘米,求DC的长 已知线段AB,在AB的延长线上取一点C,使BC=AB,再在BA的延长线上取一点D,使DA=2AB,画出图形在回答.1. 线段AC等于线段AB的几倍? 2.线段AB等于线段DB的几分之几? 3..线段DB等于线段DC的几分之几?（O(∩_ 已知线段ab,在ab的延长线上取一点c,使ac＝2bc,在ab的反向延长线上取一点d,使da＝2ab,那么线段ac是线段db的几倍