She can plant 34 plants in all. If you multiply 34 and 2 you will get 34 and I think that is the answer.
        
                    
             
        
        
        
12 is a 
13 is b 
14 is d 
15 is 1 217/1250
        
             
        
        
        
Answer:
x = 180
Step-by-step explanation:
First, you need to know 
1. Double-angle formula:
cos(2x) = 
2. Pythagorean identity:

Back to your problem, replacing the variable by the above:

 By Double-angle formula
 By Double-angle formula
 By Pythagorean identity
 By Pythagorean identity
Given 



 , we know -1 < sinx < 1, for every x ∈ R
, we know -1 < sinx < 1, for every x ∈ R



 
        
             
        
        
        
Answer:
10:14
Step-by-step explanation:
 
        
                    
             
        
        
        
Divide the numerator by the denominator so for example if you had 1/2 you would divide 1 by 2 to get 0.5