在一张方格之上回答全部问题:
点 A ,B ,C的坐标分别是 (1,2),(2,2),(3,0),给定的三角形ABC是通过三角形XYZ在同中心扩大两倍而成,三角形XYZ与三角形RST关于直线y＝1对称.
写下点 R ,S ,T 的坐标.
第二题考察科学技术法的知识:
写出代数式
(A) 小于136.80千克10千克的是
(B) 原意是:以两个数字用标准形式表达0.06280
翻译过来的理解是,以科学技术法表示0.06280,保留两个有效数字.
英语翻译answer the whole of this question on a piece of graph pa
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