Answer:
20 degrees
Step-by-step explanation:
to find the complement you subtract the angle by 90 degrees 
 
        
             
        
        
        
Step-by-step explanation:
this month-100 percent 
then previous month 100-20=80 percent
so
if 48=100percent
then x=80percent
x=(80×48)/100
x=38.4 ≈ 38 pairs if shoes
 
        
             
        
        
        
To divide 36/9 using the number line you have to jump from zero with length of 9 until reach 36, and the result will be the number of jumps.
I do the jumps by steps, but you can draw in the number line:
0. First jump from 0 to 9.
,
1. Second jump from 9 to 9+9=18.
,
2. Third jump from 18 to 18+9=27.
,
3. Fourth jump from 27 to 27+9=36. 
,
4. Great!! We already reach 36.
So, we need four jumps of 9 to reach 36 from 0.
So, the result is 36/9=4
 
        
             
        
        
        
<span>5x + 20 = -5x
5x + 5x = -20
10x = -20
x = -20/10
x = -2</span>
        
                    
             
        
        
        
Answer:
-14
Step-by-step explanation:
 Range is the difference between the lowest and highest values.