Answer:
330 miles
Step-by-step explanation:
You can solve it using the Pythagoras theorem.
x=Distance from the port to ship Y
550²=440² + x²
x²=550²-440²
x²=302,500-193,600
x²=108,900
[tex] \sqrt{x^{2} } = \sqrt {108,900} [/tex]
x=330
Hope it helps.
I have attached a diagram as well though it might not be really clear.Hope it helps.