Answer: N=-4
Step-by-step explanation:
STEP
1
:
STEP
2
:
Pulling out like terms
 2.1     Pull out like factors :
   -4n - 9  =   -1 • (4n + 9) 
Equation at the end of step
2
:
  -3 • (4n + 9) -  21  = 0 
STEP
3
:
STEP
4
:
Pulling out like terms
 4.1     Pull out like factors :
   -12n - 48  =   -12 • (n + 4) 
Equation at the end of step
4
:
  -12 • (n + 4)  = 0 
STEP
5
:
Equations which are never true:
 5.1      Solve :    -12   =  0
This equation has no solution.
A a non-zero constant never equals zero.
Solving a Single Variable Equation:
 5.2      Solve  :    n+4 = 0 
 Subtract  4  from both sides of the equation : 
                      n = -4
One solution was found :
 n = -4
 
        
                    
             
        
        
        
You subtract 5 from both sides to get n=8
        
                    
             
        
        
        
The first option is correct. For the following question, the simplified expression for the volume is 8x3 + 14x2 + 3x.
 
        
                    
             
        
        
        
Answer:
100°
Step-by-step explanation:
Supplementary means the sum of the angles is 180°
so we add 4+5 = 9
180/9 = 20
20 now we multiply according to the ratio
20x4:20x5
80:100
the measure of the largest is 100°
 
        
             
        
        
        
Answer:
reduce 
Step-by-step explanation:
become it is un solvef