Step-by-step explanation:
I am only sure about the first one but as for the rest I am not really but I tried...if you need explanations to the first one feel free to ask me
 
        
             
        
        
        
Answer:
i think its E
 im not sure 
Step-by-step explanation:
 
        
                    
             
        
        
        
Answer:
13
Step-by-step explanation:
The formula for cirmference is 
C= π2 * r 
we're using 3.14 as pi and r = radius.
 the radius is always half of the diameter.
So in this case since the diamter is 4, the radius is 2. let's substitute these numbers.
C= 3.14 *2*2 and there your answer is 12.56 which rounded to the nearest tenth is 13. 
Hope this helps :)
 
        
             
        
        
        
Answer:
angles 3 and 4 both equal a 90 degree angle or bisect a 90 degree angle.
angle 5 is 44-degrees because it is complementary or vertical to the 44 degree angle. 
x=32 because it is on the same line as the 44-degree angle and a line is 180 so 180-44=136 and to get the rest of x you would do the equation backwards so 136 divided by 4 is 34 and 36-2=32 
angle a is 136 described above.
angle b, because it is on the same line as the 46 degree angle is 180-46=134 
now im pooped :(