<h2>
Answer:</h2><h2>The angle of depression from the hiker to his car, 
Θ = 56.39 degrees</h2>
Step-by-step explanation:
A hiker at the top of a mountain spots his car back in the parking lot at the
bottom of the trail.  If the trail is 632 meters long and the mountain is 420
meters tall, 
opposite side = 632 m
adjacent side = 420 m
Angle of depression, Θ = arctan 
 = arctan 
Θ = 56.39 degrees
 
        
             
        
        
        
40,000 divided by 20 = 500
500 x 12 (which was 20-8)= 6,000
6,000 students
        
             
        
        
        
I think the answer would be A
        
             
        
        
        
Let W = number of white cars, and Y = number of yellow cars.
There were 9 times as many white cars as yellow cars. This means that the number of white cars was 9 times more than the number of yellow cars. This can be translated by the expression:
9Y = W
The person counted  40 cars in total:
W + Y = 40
So we get the system:

In the first equation, we multiply by 9:
9W + 9Y = 360
In the second equation:
9Y= W
W-9Y = 0
Then we add the first with the second equation:
9W + 9Y + W - 9Y = 360
10 W = 360
W = 36
So He counted 36 white cars.
Hope this Helps! :)