Answer:
9x^15y^3z^2 is your answer 
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Step-by-step explanation:
Take John's sister's age as "x" 
So, so twice his sister's age means = 2x
And 5 years more, means = 2x + 5
So finally John's age = 2x + 5
 
        
                    
             
        
        
        
Answer:
A
Step-by-step explanation:
distance increases by 2mph
 
        
                    
             
        
        
        
Answer:
 Quaternions are a number system that extends the complex numbers they convenient mathematical notation for representing orientations and rotations of objects in three dimensions
Step-by-step explanation:
My friend and google helped me and my notes
 
        
             
        
        
        
Answer:
8 cups hope this helps have a nice day please give me brainliest:))
Step-by-step explanation: