Laura paddles in her canoe at a speed of 4 mph for 4 miles. she then hops on her windsurfer and sails for 12 miles at a speed of 6 mph. for how long does laura 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 , 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)