Answer:
The length of the rectangle is 9 cm
Step-by-step explanation:
Given: The length of rectangle(l) = (x+3) cm and a width of rectangle (w) =  cm a
 cm a
Also, perimeter of rectangle is 24 cm.
Perimeter of rectangle is to add the lengths of all the four sides. 
Perimeter of rectangle (P) is given by;
P=2(l+w) 
Substituting the value of P = 24 cm , l = (x+3) cm and w =
then,  

Divide by 2 both sides of an equation;

Combine like terms;

Subtract 3 from both the sides we get;

Simplify:

Multiply both sides by  we get
 we get

Therefore, length of rectangle(l) = (x+3) = 6+3 = 9 cm
 
        
             
        
        
        
The answer is .4x because -3.4x+3.8x
        
             
        
        
        
Answer:
4 divided into 4000 is 1000 with no remainders
4/4000=1000
 
        
                    
             
        
        
        
Answer:
40
Step-by-step explanation:
Ok, so basically let's start with a proportion. 
x/32 = 11.25/9
Cross multiply:
x * 9 = 32 * 11.25
9x = 32 * 11.25
9x = 360
Solving for variable 'x'.
Divide each side by '9'.
x = 40
I don't know if this is the correct answer, but it was based on my math. I hope this helps!
 
        
             
        
        
        
Answer:
a^14b^12
Step-by-step explanation:
okay so lets distribute the 2 
so you get -a^6b^10 and a^8b^2
add