Answer:

Step-by-step explanation:

Apply formula:
 and
 and 

We get:







Hence final answer is 

 
        
             
        
        
        
(-3)(8+-10)
(-3) • ( -2)
which equals 6
        
             
        
        
        
Answer:
40% of the photos are victor
Step-by-step explanation:
48/(48+32+40)
 
        
             
        
        
        
Step-by-step explanation:
a = 2i + j - k
b = -1 -7j + k
a × b = (2i + j - k) (-1 + 7j + k)
-2i + 14ij + 2ik - j + 7j^2 + jk + k -7jk - k^2
-2i + 14ij + 2ik -j +7j^2 +jk - 7jk + k - k^2
-2i + 14ij + 2ik - j +7j^2 - 6jk + k - k^2