Answer:
 x/3 - x/5 = 2/15x
Step-by-step explanation:
Please mark brainlliest if you want.
 
        
             
        
        
        
Answer:
Step-by-step explanation:
30).  degree ( 4 + 1 = <em>5</em> ; 1 + 1 = 2 and 2 + 2 = 4 )
 degree ( 4 + 1 = <em>5</em> ; 1 + 1 = 2 and 2 + 2 = 4 ) 
31) D) Choice D 
 
        
             
        
        
        
<u>Answer:</u> The wavelength for X-rays with the given frequency is 
<u>Step-by-step explanation:</u>
To calculate the wavelength of light, we use the equation:

where,
 = wavelength of the light
 = wavelength of the light  
c = speed of light = 
 = frequency of light =
 = frequency of light = 
Putting the values in above equation, we get:

Hence, the wavelength for X-rays with the given frequency is 
 
        
                    
             
        
        
        
The answer is 0.008a^3 because you would do 0.2 to the power of 3