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Solve 2x+y=3 x+y=5 in substitution method

Michael is training for a marathon. in his first week he plans to run 8miles. what path should he take

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.