Answer:
(8+24)÷(12x4) the correct answer is B
 
        
                    
             
        
        
        
Answer:
35 5-lb weights and 25 3-lb weights
Step-by-step explanation: 
 
        
             
        
        
        
4/5 of the original amount at the start of the month will remain. The amount at the start of every month will change. Thus:
an = 4/5 (an-1) ; where a1 = 500.
        
             
        
        
        
Answer:

Step-by-step explanation:
(This exercise is presented in Spanish and for that reason explanation will be held in such language)
El lado restante se determina por la Ley del Coseno:



Finalmente, el angulo C se halla por medio de la misma ley:



