maths problems.

来源：学生作业帮编辑：作业帮分类：数学作业时间：2024/05/03 15:38:52

maths problems.

在国家下身的宏观调控下,某市的商品房成交价由今年3月分的14000元/m²下降到5月分的12600元/m²

（1）问4、5两月平均每月降的百分率是多少?（参考数据：根号0.9≈0.95）

（2）如果房价继续回落,按此降价的百分率,你预测到7月份该城市的商品房成交均价是否会跌破10000元/m²?请说明理由.

设为x
则14000(1-x)²=12600
(1-x)²=0.9
1-x=±0.95
x

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