If 4/5xblank=2/5 what is blank?

What term best describes a line ans a point that lie in the same plane

()1. how do you find range? 2.the following set of data is to be organized into a histogram. if there are to be five intervals on the graph, what should the length of each interval be? 30, 34, 23, 21, 27, 25, 29, 29, 25, 23, 32, 31

Write the fraction 9/50 as a decimal if needed round to the nearest hundredth