Answer:
k = 2
x = 2y
Step-by-step explanation:
If variables x and y vary directly, this is expressed as;
x ∝ y
x = ky
k is the proportionality constant
Let's assume the value of x and y since we are not given;
x = 20
y = 10
Substitute
20 = k(10)
10k = 20
k = 20/10
k = 2
Hence the constant of proportionality is 2
Substitute i=k = 2 into the equation x = ky
x = 2y
Hence an equation that relates x and y is x = 2y
<em>Note that the values here are assumed value, you can use the same method for any values of x and y</em>
 
        
             
        
        
        
Answer:
16.4 units to the nearest tenth.
Step-by-step explanation:
sin 66 = 15 / x
x *  sin 66 = 15
x = 15 / sin 66
= 16.4196
 
        
             
        
        
        
Answer:
D
Step-by-step explanation:
You can google it and see if I'm right.... but I'm pretty sure I am 
 
        
                    
             
        
        
        
The answer is 60 surprisingly