Answer:
D
Step-by-step explanation:
r = boat's rate
c = current's rate
1. A boat traveled in a river upstream for a distance of 30 miles. Travelling upstream, the current obstructs the movement, so the actual boat's rate is r - c mph.
If the boat took 4 hours to travel upstream, then
2. A boat traveled in a river downstream for a distance of 30 miles. Travelling downstream, the current helps the movement, so the actual boat's rate is r + c mph.
If the boat took 3 hours to travel downstream, then
So, we get the system
4r-4c=30
3r+3c=30
Answer:
4/5
Step-by-step explanation:
32/40
16/20
8/10
4/5
answer:
Adele and Kent will not have the same amount in their account at the same time. because they both are going at the same rate depositing 45$a month Adele is ahead by 30$ because she deposited 100 instead of 70 in the beginning. They will be at the same point if Kent deposits more or Adele deposit less.
Answer:
0
Step-by-step explanation:
If they want the values of where the graphs intersect, that means the values are both = to each other, meaning subtracting the same value by the same value is 0
Answer:
29
Step-by-step explanation:
