<span>In </span>mathematics<span>, a </span>matrix<span> <span>(plural </span></span>matrices) is a
rectangular array of numbers, symbols, or expressions, arranged in rows and
columns.
 
Given that
E = [ 1 2] 
 
<span>A = | 3 
0|</span>
<span>      | 2
-1 |</span>
<span>2EA = 2 [1 2] | 3  0|</span>
<span>                      | 2 -1 |</span>
 
<span>2EA = [ 14 
-4]</span>
<span> </span>
 
        
                    
             
        
        
        
Answer:
Step-by-step explanation:
960 75%
 
        
             
        
        
        
Answer:
y=1/4x+3 
Step-by-step explanation:
To find the inverse, switch x and y or f(x) 
f(x)=4x-12 
y=4x-12 
x=4y-12 
Add 12 to both sides 
x+12=4y-12+12
x+12=4y 
Divide both sides by 4 
x+12/4=y 
1/4x+12/4=y
1/4x+3=y
y=1/4x+3 
 
        
                    
             
        
        
        
Answer:
15, 18, 21
Step-by-step explanation:
3, 6, 9, 12, 15, 18, 21...
3 x 5 = 15
3 x 6 = 18
3 x 7 = 21
Hope this helps! :)