Answer:
Yes they are.
Because:
As said in the rules you have to keep the bases and add the exponents.
 
        
                    
             
        
        
        
Answer:
(x-7). (x-1) this is this 
 
        
             
        
        
        
Remember you can do anyting to an equation as long as ou do it to both sides
-6x+4=-50
minus 4 both sides
-6x=-54
divide both sides by -6
x=9
5x+6=-44
minus 6 both sides
5x=-50
divide both sides by 5
x=-10
-3(7+6x)=-201
normally you would distribute (that works) but it's easier to divide both sides by -3
7+6x=67
minus 7 both sides
6x=60
divide by 6 both sides
x=10
        
             
        
        
        
Answer:
C. True; by the Invertible Matrix Theorem if the equation Ax=0 has only the trivial solution, then the matrix is invertible. Thus, A must also be row equivalent to the n x n identity matrix.
Step-by-step explanation:
The Invertible matrix Theorem is a Theorem which gives a list of equivalent conditions for an n X n matrix to have an inverse. For the sake of this question, we would look at only the conditions needed to answer the question.
- There is an n×n matrix C such that CA= . .
- There is an n×n matrix D such that AD= . .
- The equation Ax=0 has only the trivial solution x=0.
- A is row-equivalent to the n×n identity matrix  . .
- For each column vector b in  , the equation Ax=b has a unique solution. , the equation Ax=b has a unique solution.
- The columns of A span  . .
Therefore the statement:
If there is an n X n matrix D such that AD=I, then there is also an n X n matrix C such that CA = I is true by the conditions for invertibility of matrix:
- The equation Ax=0 has only the trivial solution x=0.
- A is row-equivalent to the n×n identity matrix  . .
The correct option is C.
 
        
             
        
        
        
Answer:
66 = s
Step-by-step explanation:
s + 24 = 90
90 = s + 24
90 - 24 = s
66 = s