Answer:
The angle of elevation is approximately 
Step-by-step explanation:
Notice that the two pieces of information given: "400 ft away from a building", and building that is "850 ft tall", can be regarded as the two legs of a right angle triangle (see attached image).
Then the angle
that we are trying to find (the angle of elevation) can be found by using the arc-tangent function:

Hello buddie :):):):):):):):)
Answer:
3 15/25
3 3/10
-3
Step-by-step explanation:
I think you're wondering how to say this equation in words; you say 2 times the quantity x minus 7 plus 10.