A-A+
On the number line 1.4 is halfway between whi
问题详情
On the number line, 1.4 is halfway between which of the following pairs of numbers?
A.-1.4 and 2.4
B.-1 and 2
C.-0.3 and 3.1
D.0. 15 and 1. 55
E.0. 4 and 1请帮忙给出正确答案和分析,谢谢!
参考答案
正确答案:C
解析:在数轴上,1.4是下面哪一对数的中点?解:本题的正确答案为(C)。在数轴上,若一点是另外两点的中点,则该点的坐标应是另外两点坐标的和的一半。根据这条定理,可以推出1.4是-0.3和3.1两点的中点。