Select all the equations that can represent the question: "How many groups of 45 are in 1?" ?·1=45

?·45=1

45÷1=?

1÷45=?

1·45=?

In the field of thermodynamics, rankine is the unit used to measure temperature. one can convert temperature from celsius into rankine using the formula , what is the temperature in celsius corresponding to r degrees rankine? a. 9/5(c - 273) b. 9/5(c + 273) c. 5/9( c - 273) d. 5/9( c + 273)