Distribute the negative b and negative one to he terms in the parentheses
In an expression, if there area brackets, you always have to expand THEN solve it
        
             
        
        
        
Answer: I do not understand the options you gave but but cos30º is equal to  /2 which is 0.86602540378.
/2 which is 0.86602540378.
 
        
             
        
        
        
X = - 1/2
In other way is x = -0.2 , x = -5^-1
        
             
        
        
        
Answer:
$8,569.12
Step-by-step explanation:
 
        
             
        
        
        
Answer:
$144.50/8.50 = n
Explanation: 
The word each indicates this equation will use division. We know the total is 144.50, so that will be the number being divided. 8.50 is the number 144.50 is divided by. The quotient will be represented by the variable, n.