How to convert 200cm;meters

How do you solving the solution of each system using elimination?

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

Meghan has created a diagram of her city with her house, school, store, and gym identified. a. how far is it from the gym to the store? b. meghan also wants to walk to get some exercise, rather than going to the gym. she decides to walk along arc ab. how far will she walk? round to 3 decimal places.