Estimate the sum.
85
+ 61.7

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.

Ab and bc form a right angle at point b. if a= (-3,-1) and b= (4,4) what is the equation of bc?

The difference between two numbers is one. three times the larger number minus two times the smaller number is 9. what are the two numbers