54 buttons ÷ 9 button cards = 6
She should buy 6 cards of buttons.
 
        
             
        
        
        
Step-by-step explanation:
f=6×9
aubstituting f=6×9
6×9×16=b
864=b
 
        
                    
             
        
        
        
Answer:
The answer is 16.
Step-by-step explanation:
6 x 3 = 18
18 - 2 =16
 
        
                    
             
        
        
        
Answer:

2y^3 / x^2 - y^2
hope this helps and is right. p.s i really need brainliest :)
if my answer is wrong then I am incredibly sorry!
 
        
             
        
        
        
Answer: 659 13/18 yd^2 or 659.7yd^2                ^ =squared
Step-by-step explanation:
This is the answer because you have 6 sides of this prism. That means 3 sides are parallel to the sides across from them. So, 12 1/2 yd by 8 1/3 yd is 104 1/6, then multiply by 2. That equals 208 1/3. Then, 10 5/6 yd by 8 1/3 yd is 90 5/18. then times by 2. That equals 180 5/9. Next, 10 5/6yd by 12 1/2 is 135 and 5/12. then times by 2 and that is 270 5/6yd.
add 208 1/3 + 180 5/9 + 270 5/6
659 13/18 yd^2