Answer:
Option A. 3(x+8y)
Step-by-step explanation:
 
        
                    
             
        
        
        
Answer:
a!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!1
Step-by-step explanation:
 
        
             
        
        
        
Answer:
4.325 x 
Step-by-step explanation:
Scientific notation
This means that the decimal in the number 4.325 is carried to the right 9 times and the empty spaces are the 0s in the answer
 
        
             
        
        
        
Answer: 1.83
Step-by-step explanation: 1 2/9 divided by 2/3 = 1.83
 
        
             
        
        
        
PART A
The given vectors are,


The magnitude of the vector

is given by:

This implies that,






PART B 
To find the unit vector in the direction of a given vector, we divide by the magnitude of that vector.

Rationalize the denominator.

Also,


PART C
The sketch of the given vectors as well as their unit vectors are shown in the attachment.