Answer:
Area: 9cm²
Perimeter: 12 cm
Explanation:
Area is length x width
It's a square so length and width are the same
3 times 3 is 9
And to find the perimeter you just add the side lengths
Squares have 4 sides and the given side length is 3 so 3x4 OR 3+3+3+3 is how you get the perimeter.
 
        
                    
             
        
        
        
Answer:
$60
Step-by-step explanation:
1200*0.05 = $60
 
        
             
        
        
        
Answer:
5/3
Step-by-step explanation:
 
        
                    
             
        
        
        
The mistake she made was timesing the 6 by the -7.5 as there is no x after the 6
Therefore:
-3.8(-7.5) +6
28.5+6 =34.5
        
                    
             
        
        
        
Answer:
15
Step-by-step explanation:
The formula for factoring a sum of cubes is:

We have a=3f and b=5g here.
So a*b in this case is 3f*5g=15fg.
The ? is 15.