英语翻译On the number line,point P has coordinate 1/2,and point
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英语翻译
On the number line,point P has coordinate 1/2,and point Q has coordinate 2.If point R is 1/4 of the way from P to Q,what is the coordinate of 我不知道what is the coordinate of R这句是什么意思我认为R是3/8但没有这个选项 .不清楚为什么要加P的坐标.
On the number line,point P has coordinate 1/2,and point Q has coordinate 2.If point R is 1/4 of the way from P to Q,what is the coordinate of 我不知道what is the coordinate of R这句是什么意思我认为R是3/8但没有这个选项 .不清楚为什么要加P的坐标.
“point R is 1/4 of the way from P to Q”是指R在线段PQ的1/4处,故R=1/2+(2-1/2)×(1/4)=7/8
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