(-a^3b^2*-a^-2b^-3)^-2/2a^2b^-3
= a^4b^9/2a^8b^4
=b^5/2a^4
so your answer is b^5/2a^4
        
             
        
        
        
Answer:
is 26
Step-by-step explanation:
because i said
 
        
             
        
        
        
Answer:
Here is the solution...hope it helps:)
 
        
             
        
        
        
Answer:
4 feet by 3 feet
Step-by-step explanation:
I think your question is missed of key information, allow me to add in and hope it will fit the original one.  
Please have a look at the attached photo.  
My answer: 
 width-to -height ratio of 16:9
Let analyse all possible answers: 
16 divided by 4 is the same as 9 divided by 3 => it is true 
16 divided by 28 is different as 9 divided by 21 => it is wrong 
- 48 centimeters by 27 centimeters
16 divided by 48 is different as 9 divided by 27 => it is wrong 
16 divided by 26 is different as 9 divided by 219=> it is wrong 
We choose A. 
Hope it will find you well. 
 
        
             
        
        
        
Answer:
Equivalent ratios are just like equivalent fractions. If two ratios have the same value, then they are equivalent, even though they may look very different! In this tutorial, take a look at equivalent ratios and learn how to tell if you have equivalent ratios.