A:﹣ 23 x﹣5=3x
B:﹣ 23 x﹣5y=3
C:﹣ 23 x2﹣5=3
D:﹣ 23x ﹣5=3x
甲
乙
丙
丁
平均数(cm)
180
185
方差
3.6
7.4
8.1
根据表中数据,要从中选择一名成绩好且发挥稳定的运动员参加比赛,应该选择( )
称出约69g的物品的质量,应顺次在天平右盘中添加的砝码的顺序( )
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