A boat moves at a rate of 40 mph in Stillwater if the rivers current flow in a rate of 4 mph how long does it take a boat to travel 22 miles upstream?
upstream rate: 40 mph - 4 mph = 36 mph
how long: 22 miles/36 mph = 0.6 h = 36 minutes
Answer:
8x-5y=-20
Step-by-step explanation:
First you have to collect it like terms (5y-8x=20
Then reorder the terms (-8x+5y=20)
Next is to change the signs (8x-5y=-20)
Then you have your answer
Subtract any number from the next one.
-1 - (-6)
4 - (-1)
9 - 4
14 - 9
All of the above subtractions give the same answer.
That answer is the common difference.
