Answer:
D
Step-by-step explanation:
the rest of them have 2 Y for 1 X
 
        
             
        
        
        
The height of the tree is 249.5 feet
<h3>How to determine the height of the tree?</h3>
The given parameters are:
- Elevation angle = 80 degrees
 - Shadow length (L) = 44 feet
 
Let the height of the tree be x.
So, we have:
tan(80) = x/44
Multiply both sides by 44
x = 44 * tan(80)
Evaluate
x = 249.5
Hence, the height of the tree is 249.5 feet
Read more about elevation at:
brainly.com/question/19594654
#SPJ1
 
        
             
        
        
        
Y = kx where k is a constant
27 = k*9
k = 27/9 = 3
required variation is y = 3x
        
                    
             
        
        
        
First, you want to solve for the equation for this problem, would be: 
0.05N + 0.10D = 20.50 
While N = The amount of nickels, and D = The amount of dimes. 
Since N = 164, and D = 123. It would add up to 287 coins. 164 + 123 = 287. 
Now that you have the number for those two variables, solve the equation for when N = 164, and D = 123. 
0.05N + 0.10D = 20.50 
<span>0.05(164) + 0.10(123) = 20.50 
</span><span>8.2 + 12.3 = 20.50 
</span>20.50 = 20.50 
So, there is 164 nickels, and 123 dimes for your answer. 
<em>I hope this helps! </em>
<em>~ Notorious Sovereign</em>
        
                    
             
        
        
        
She should use the conversion factor of 100 centimeters to 1 meter and also the conversion factor of 60 minutes to 1 hour.