Answer:
19.) b, d
20.) d, a
21.) d, c
22.) a
23.) c
Hope This Helps!  Have A Nice Day!!
 
        
                    
             
        
        
        
Answer:
Purchases=  696,000 pounds
Explanation:
Giving the following information:
Production= 222,000 units. 
To make one unit of a finished product, three pounds of direct material Z are required. 
<u>To calculate the purchases of direct material, we need to use the following formula:</u>
Purchases= production + desired ending inventory - beginning inventory
Purchases= 222,000*3 + 420,000 - 390,000
Purchases=  696,000 pounds
 
        
             
        
        
        
This is False.
A diode is something completely different, but can be found in a computer and is an important electronic part.