A=2 b=3 and c= -1 then find 2^a + 3^b - 5^c

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)

Vertical angles must check all that apply

If jklm is a trapezoid, which statements must be true?