X = 180 degrees
That is. The answer
        
             
        
        
        
#1: The central angle of each slice would be found by dividing the total central angle of a circle (360°) by the number of slices (8), so:
 Each slice would have a central angle of 45°.
Each slice would have a central angle of 45°.
#2: This question is vague, since the arc can be measured in degrees or inches. The 
degree measure of the intercepted arc would be 
90°. The 
length in inches of the intercepted arc could be found using the formula:

So, in your case, it'd be:

#3: The circumference of any circle is found by the equation 

 wher r is the radius. So in your case it's 

 which is 

.
As for the equation of the circle when graphed, it's:
 
 
        
        
        
This week she  <span> hiked 3 miles on Monday, 4 miles on Tuesday, and 3 miles on Thursday. so 3+4+3=10 miles
last week she hiked for 8 miles
10-8=2 miles </span>