C, because A is going to B which is 11 and B is going to C which is 10 and C going back to A is 9
        
             
        
        
        
The length of the arc intercepted by a central angle is the ratio of the angle to 360 degrees times the circumference. From the given values above,
                            S = (30° / 360°) x 2 x π x (6 ft)
                                 S = π
The angle intercepted an arc which measures π feet. The answer is letter A. 
        
                    
             
        
        
        
Answer:
b = √c²-a²
Step-by-step explanation:
b² = c² - a²
b = √c²-a²
 
        
             
        
        
        
Answer:
7.5 cm²
Step-by-step explanation:
Dimensions of the large ∆:


Dimensions of the small ∆:


Difference between the area of the large and the small ∆ = 13.5 - 6 = 7.5 cm²
 
        
             
        
        
        
Louise wants to factorize completely the given polynomial 
Grouping first, second terms together and third, fourth terms together
= 
Taking  common from first and second terms of the given expression and taking 5 common from the third and fourth terms.
 common from first and second terms of the given expression and taking 5 common from the third and fourth terms.
=
Taking (x+3) common from the given expression,
= is the completely factored form.
 is the completely factored form.