Asteamer going downstream traveled the distance between two ports in 3 hours. the return trip took 3 hours 40 minutes. find the speed of the water current if the speed of the steamer in still water is 18 mph.

1.8 mph

Step-by-step explanation:

If the water's speed is v, and the distance between the ports is d, then:

d = (18 + v) (3)

d = (18 − v) (3⅔)

Set the distances equal:

(18 + v) (3) = (18 − v) (3⅔)

54 + 3v = 66 − 3⅔ v

6⅔ v = 12

v = 1.8

The speed of the water is 1.8 mph.

i dont know

step-by-step explanation:

y = 2x

step-by-step explanation:

if you divide each number in the sequence, you'll see that they all have a multiple factor of 2. each number in the series, and any other numbers which may continue, will be multiplied by 2. therefore, y is the next number in the sequence, and x is the current one, so, our formula will be y = 2x.