Answer: A. and D.
Step-by-step explanation: Sorry if its wrong but that sounds right. The first week comes before the second week. 
 
        
             
        
        
        
Step-by-step explanation:
If a radius of a circle and a tangent to a circle intersect at the point of tangency, then the radius and the tangent are perpendicular.
Answer: B
 
        
                    
             
        
        
        
Answer:
4
Step-by-step explanation:
Standard form, in other words, is when it is fully simplified.
      [Given]
            ( 1 + 1 ) + ( 1 + 1 )
      [Add what it is the parentheses]
            ( 2 ) + ( 2 )
            2 + 2
      [Add 2 and 2 together]
            4
 
        
                    
             
        
        
        
I’m not gonna answer the entire thing for you but I’ll give you a Headstart. In problems like Number nine you take where the Second leg is an subtracted by the first leg giving you the degree measure. And problems like 18 through 21 you have to find angle measures with the same markings
        
             
        
        
        
Answer:
-11/10
Step-by-step explanation:
-7/10-2/5
-7/10-4/10
-11/10