Answer:
↔→jhgt
Step-by-step explanation:
 
        
                    
             
        
        
        
Answer: 18:54
:))) have a good day.
        
             
        
        
        
The complete question in the attached figure
we know that
[arcs rc +arc cs arc sm]---------------> they take up half a circle-------->180°
<span> they are all congruent
so 
divide 180 by 3 ----------------> 180/3=60</span>°
Find the length of arc rc=60°<span>
if 360</span>°----------------> (2*pi*7) length of circumference 
60° -------------------> X
<span>X=60*2*pi*7/360------------> 7.327 units
the answer is 
</span>
the length of arc rc= <span>
7.33 units</span>
 
        
        
        
Answer:
         1  
= -----------
    6(x + 7)
Step-by-step explanation:
 3x - 21      x^2 - 49
----------- ÷ -------------
18x - 18        x - 1
 3x - 21          x - 1
----------- ×  -------------
18x - 18       x^2 - 49
Factor the top left:
3x - 21  = 3(x - 7)
Factor the bottom left:
18x - 18 = 18(x - 1) 
Factor the new bottom right:
x^2 - 49 = (x + 7)(x - 7)
Multiply and simplify the faction:
3(x - 7)            x - 1
----------- ×  -----------------
18(x - 1)       (x + 7)(x - 7)
         1  
= -------------
    6(x + 7)