Answer:
0.40 foot
Step-by-step explanation:
In the first case, a 50 - foot building casts a- foot shadow (1-foot). Let the angle of elevation of the sun from the shadow be represented by θ.
Then:
Tan θ = 
Tan θ = 
Tan θ = 50
⇒ θ =  50
 50
       = 88.8542
       = 
The angle of elevation is approximately  .
.
For a 20-foot pole,
Tan θ = 
Tan  =
 = 
x = 
  = 0.4015
  = 0.40 foot
The length of the shadow of the pole is 0.40 foot.
 
        
             
        
        
        
1.666666, any decimal or number that is repeating can be written in a/b format and b not equal zero is rational. Repeating decimals can be considered rational because they can be represented as a ratio of two integers. 
        
             
        
        
        
Answer:
$ 7,098
Step-by-step explanation:
$2,590
+
$4,508
=
$7,098
 
        
             
        
        
        
Answer:
D: 6y+3+5y-2
Step-by-step explanation:
6y+3+5y-2 = 11y + 1
All the other expressions evaluate, after simplification to 11y+5