The x is 6 (hope i helped kinda maybe i dunno)
Answer:
- boat speed: 17.25 mph
- current: 2.5 mph
Step-by-step explanation:
Upstream, the speed of the current (c) subtracts from the speed of the boat (b) to give the net speed. Downstream, the speed of the current adds. We can make use of the relation ...
speed = distance/time
b-c = 29.5/2 = 14.75 . . . . . miles/hour
b+c = 59.25/3 = 19.75 . . . .miles/hour
Subtracting the first equation from the second, we get ...
(b+c) -(b-c) = 19.75 -14.75
2c = 5
c = 2.5
Then either equation can be used to find b:
b = 14.75 +c = 17.25
The speed of the boat in still water is 17.25 miles per hour; the speed of the current is 2.5 miles per hour.
The numbers are {10, 11, 12, ... , 23, 24}.
Can we divide 11 by 1? yes. can we divide the other digit of 11 by 1? yes. Thus, 11 satisfies the criterion "they are divisible by each of their digits."
What about 12: is 12 divisible by 1? YES. Is 12 divisible by 2? YES.
And so on.
B is the correct answer. The $20 flat fee is the 20 in the equation. The 4 dollars per hour is the 4h in the equation. The $30 is the total amount at the end of the equation.
