Answer:
6x+5y
Step-by-step explanation:
Combining like terms (x and y)
we get 
30x-24x=6x
6y-y=5y
=> 6x+5y
 
        
                    
             
        
        
        
Answer:
 99
Step-by-step explanation:
1.  rectangular pyramid formula: 
2.  V=lwh/3
3.  99 = (3)(9)(11)/3
 
        
                    
             
        
        
        
numerator. Denominator is what the numerator fits into
 
        
             
        
        
        
Answer: A 24 cm piece of string is cut into two pieces , one piece is used to form a circle and the other piece is used to form a square.
How should this string be cut so that the sum of the areas is a minimum .
:  
Let x = the circumference of the circle
then
(24-x) = the perimeter of the square
:
Find the area of the circle
find r
2*pi*r = x
r =  
Find the area of the circle
A =  
A =  
A =  sq/cm, the area of the circle
:
Find the area of the square
A =  sq/cm the area of the square
The total area
At =  +  
Graph this equation, find the min
Min occurs when x=10.6 cm
cut string 10.6 cm from one end 
Step-by-step explanation: Hope I help out alot (-: :-)
 
        
                    
             
        
        
        
Answer:
0.25
Step-by-step explanation:
11/12 = 0.917
2/3 = 0.667
0.917 - 0.667 = 0.25