Giving brainliest if correct

Which expression do you get when you eliminate the negative exponents of 4a^2 b^216a^-3 b

Given: jk ||lm prove: _2 = 27 statement justification 1. jk ||lm 1. given 2.26 = 27 3.22 = 26 2. 3. 4. _2 = 27 4. corresponding angles theorem transitive property of equality vertical angles theorem substitution property of equality

How many degrees are there in the central angles in a circle