How many 30 degree angles are in a 150 degree angle? use repeated subtraction to solve.

What are the values of , , m∠abd and m∠dbe in the given figure? explain or show your work

What is the square root of 45? (step by step working plz)

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)