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390
Explanation
Step 1
then, we have a rigth triangle
we can use Pitagoras theorem to find the missing distance
Let
adjancent side= 520
opposite side= x
hypotenuse = 650
Step 2
apply the P.T.
[tex]\begin{gathered} \text{adjside}^2+opposside^2=hypotenuse^2 \\ 520^2+x^2=650^2 \\ solve\text{ for x} \\ x^2=650^2-520^2 \\ x=\sqrt[]{650^2-520^2} \\ x=\sqrt[]{152100} \\ x=390 \\ \end{gathered}[/tex]Hence, ship y has traveled 390