Answer:
 + 11m - 11
 + 11m - 11
Step-by-step explanation:
6m+(m-2)(m+7)+3  =   6m   +  [ m*m - 14 -2m + 7m]  + 3
=  6m  + mm - 14 + 5m  + 3
=  mm + 11m - 11
6m+(m-2)(m+7)+3   =  + 11m - 11
 + 11m - 11
 
        
             
        
        
        
The system of equations have no solution.
Explanation:
The equations are  and
 and 
To find the two numbers, let us solve the equations using substitution method.
From the equation  , let us determine the value of r,
, let us determine the value of r,

Let us substitute the value of r in  , we get,
, we get,

which is not possible.
This means that the system has no solution.
 
        
             
        
        
        
Answer: . Rotation about the y-axis by π
Step-by-step explanation:
 
        
             
        
        
        
Answer:
10=16[ by cost]
Step-by-step explanation: the cost of 10 chairs is x.
the cost 16 chairs is also x. 10x = 16x
4x is loss. 
Profit or Gain = Selling price – Cost price. Loss = Cost price – Selling price. Profit Percentage = [Profit/C.P.]×100. Percentage Loss = [Loss/C.P.]×100.
In simple way, we can say that sp- cp[ when it is a gain], cp -sp[ when it is a loss]. here it is a loss as well as a gain. so do both according to the formula
 
        
             
        
        
        
Answer:
possible lengths
45 and 2 
3 and 20
5 and 18 
15 and 6
10 and 9  
there perimeter will be 
94
46
46
27 
38
answer to this question is  15 and 6