Answer:

Step-by-step explanation:
see the attached figure to better understand the problem
step 1
In the right triangle ABC find the length side BC
we know that


step 2
In the right triangle ABD find the length side BD
we know that


step 3
we know that
The distance between the two boats is the length side CD

substitute the values

Answer:
y= -28
Step-by-step explanation:
35+4=3y+123
39=3y+123
-3y+39=123
-3y=123-39
-3y=84
y= -28
Answer:Tag 30*(2\/3)=x
Step-by-step explanation:
Tag 30*= x/2\/3;
Tag 30*(2\/3)=x