Answer:
-16.4, (commutative property)
Step-by-step explanation:
(add, because they are both negatives) -5.2+(-8.4)= -13.6
Then add the (-2.8): -13.6 + (-2.8) = -16.4
Thats your first equation!!!
do the same thing for the other one, and by the way it the same answer.
Its commutative prop because its just switching positions and its adding negatives.
The answer is d.
I that is not the correct answer or you want a further explanation as to how I got that comment or private message me. I hope that helps! :0
Answer:
The answer is B. -33
Step-by-step explanation:
I doubt you'll need to show working
Answer: 
Step-by-step explanation:
You need to draw a right triangle as the one attached, where
is the angle of elevation from the fire to the top of the fire tower.
You need to use the Inverse trigonometric function Arctangent:

Observe the triangle. You can identify that:

Then, you can substitute values:

Finally, evaluating, you get that the angle of elevation from the fire to the top of the fire tower is the following:

Rounded to the the nearest tenth of a degree:

Pretty sure its 183. correct me if im wrong tho