A|______|M______|c_______|B-如图所示线段AB=10厘米且AC:BC=3:2点M是线段AC的中点求线段BM的长.
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A|______|M______|c_______|B-如图所示线段AB=10厘米且AC:BC=3:2点M是线段AC的中点求线段BM的长.
A|______|M______|c_______|B-如图所示线段AB=10厘米且AC:BC=3:2点M是线段AC的中点求线段BM的长.
A|______|M______|c_______|B-如图所示线段AB=10厘米且AC:BC=3:2点M是线段AC的中点求线段BM的长.
∵AC:BC=3:2
设AC=3x BC=2x
∴3x 2x=10
解得x=2
∴AC=3x=6.BC=2x=4.
∵M为AC中点
∴AM=MC=1/2AC=3
∴BM=MC BC=3 4=7
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