Sam rode his bike 2/5 of a kilometer and walked another ¾ of a kilometer. How far did Sam travel?

In the field of thermodynamics, rankine is the unit used to measure temperature. one can convert temperature from celsius into rankine using the formula c= r/1.8 - 273, what is the temperature in celcius corresponding to r degrees rankine.

The data represents the semester exam scores of 8 students in a math course. {51,91,46,30,36,50,73,80} what is the five-number summary?

If you answer right ill give brainliest, : )