By counting grid squares, we see the library is 5 miles north and 6 miles east of Ashley's house. Using the Pythagorean theorem, we can find the straight-line distance to be .. d = √(5^2 +6^2) .. = √(25 +36) .. = √61 . . . . . miles .. ≈ 7.81 . . . . miles
First multiply .45*647= 291.15 291.15 is the number of people that attended subtract 291.15 from 647 and you get 355.85 wait.. but that's not possible so just round it so the answer to your question is 355 people did not attened
