Answer:
D) 5
Step-by-step explanation:
Using cosine law 
b² = 10² + 12² - 2(10)(12)cos(24)
b² = 24.74909017
b = 4.974845743
 
        
             
        
        
        
Answer:
sorry but i cant see the anwser choices
Step-by-step explanation:
 
        
                    
             
        
        
        
Answer:
C. 101 - 5(n - 1)
Step-by-step explanation:
d = (26 - 71)/(16 - 7)
d = -45/9
d = -5
a7 = a1 + (7-1)(-5)
71 = a1 - 30
a1 = 101
an = 101 + (n - 1)(-5)
an = 101 - 5(n - 1)