C: 15,938 + 427 is 4 times as large as (15,938 + 427) /4 
        
             
        
        
        
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Answer:</u></h2>
y = cos ^- 1 (x)
Step-by-step explanation:
The Function y = cos -1x = arccos x and its Graph: Since y = cos -1x is the inverse of the function y = cos x, the function y = cos -1x if and only if cos y = x. This leaves the range of the restricted function unchanged as [-1, 1].
 
        
        
        
Answer:
- 57
Step-by-step explanation:
The n th term of an arithmetic sequence is
 = a + (n - 1)d
 = a + (n - 1)d
where a is the first term and d the common difference
Here a = 13 and d = - 2.5, thus
 = 13 + (28 × - 2.5) = 13 - 70 = - 57
 = 13 + (28 × - 2.5) = 13 - 70 = - 57
 
        
             
        
        
        
Answer:
I think the answer is 180 degree angle