Answer:
His position is now on -18 below sea level
Step-by-step explanation:
So since Tomas is 15 feet below sea level, that means that it's -15. He rose 9 feet which now he is -6 feet below sea level. Now he descends 12 feet which means he goes back down and now he is at -18 below sea level.
i believe it is a hexagon, since it has 5 sides
if you're looking for x
x=180-42-51= 87°
and if you're looking for D
D= 180-42= 138°
-9
25,49.
