quesorules7101
23.08.2019 •
Mathematics
Starry has to fly 6 miles east to visit a friend, 8 miles south to go to the space ship station, and then finally 3 miles west, 3 miles north, and 3 miles west again to reach her school. if starry goes straight home from school, how many directions would she need to fly in each direction? explain carefully, i am extremely confused, note that she will fly straight home!
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Ответ:
south is opposite north so write any south direction as negative north
6 miles east+8 miles negative north+3 miles negative east+3 miels north+3 miles negative east
so we group east with negative east and north with negative north
6 miles east+ -3 mieles east+ -3 miles east+ -8 miles north+3 miles north
add
0 miles east + -5 miles north
-5 miels north=5 miles south
therefor she so far is right now0 units east and 5 miles south of her home
therefor she needs to go 5 miles negative south or 5 miles north
answer is 5 miles north
1 direction
Ответ: