What is the value of 5 x (-3/4) x 2/5 ÷ (-3)

20 Points

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.

In a school 2/3 of the students study a language of those who study a language 2/5 study french

How do you solving the solution of each system using elimination?