Answer:

<h3>4th answer is correct</h3>
Step-by-step explanation:

Answer:
The boat traveled 781.5 feet from point AA to point BB
Step-by-step explanation:
Find the height of the small triangle then find the base of the big triangle then subtract the two answers to find the distance between a and b
:)
See the attached picture:
Answer:
-5.4c
Step-by-step explanation:
We're combining two "like" terms here.
It may make the problem easier to visualize if we write one of these terms over the other, as follows:
-2.6c
- 2.8c
----------
Adding, we get:
-2.6c
- 2.8c
----------
- 5.4c (answer)
Answer:
The equation for this is: 
Step-by-step explanation:
We have that the number though is n.
Adds 10:
This means that now we have: 
Multiplies by 3:
This means that now we have: 
Gets 42:
This means that: 