plane 1 travels 395 miles in 1 hour
plane 2 travels 422 miles in 1 hour
together, they travel (395+422) 817 miles in 1 hour
to have 2451 miles between then, they'd need to travel

so in 3 hours, they'll be 2451 miles apart
Answer:
3.14159265358979323846264338327950288419716... thats all i know, but i havent studied it in a while
Answer:
13
Step-by-step explanation:
subtract 1 on both sides
then divide by 3
to get 13
Answer:
12/30
Step-by-step explanation:
See the picture and let me know if you have any questions