Question

I need help, no rush but if you could thatd be great!

Answer 1

Those two questions are baffleing me, I have solved them each a couple different times but it never says my answers are right! HELP?!?!

Answer 2

@Historybuff1 @river_song Any ideas?

Answer 3

For the second problem, I divided the length of a nautical mile by the distance between the knots. I used 47.25 because 3 inches is 1/4 of a foot.

Answer 4

For the first problem, I divided the dolphin's speed by the conversion factor of 1.15 to get statute miles into nautical miles. I figured that if a dolphin swam at 115 statute miles per hour, it would convert to 100 nautical miles per hour, a lower number, so the 20 mph had to become a lower number also - so I divided. 3rd place.

Answer 5

@Tonks I don't quite understand how you mean I should go about solving no. 2?

Answer 6

1 [na mi] = 1.15 [st mi]
(1/1.15) [na mi/st mi] = 1

1 [st mi/ hr] = 1 [st mi/ hr] * 1
= 1 [st mi/ hr] * (1/1.15) [na mi/st mi]
= (1/1.15) [na mi/ hr]
= (1/1.15) [kn]

20 [st mi/ hr] = 20 * (1/1.15) [kn]