Answer:
x = -8
Step-by-step explanation:
x + (8/4) = -6
x × 4 + (8/4) × 4 = -6 × 4
4x + 8 = -24
4x = -24 - 8
4x = -32
x = -8
 
        
             
        
        
        
Answer:
B. 28 hours
Step-by-step explanation:
GIVEN :- <em>Time taken by family to travel 600 km is 8 hours</em>
CALCULATIONS :-
<em>To calculate the time to travel 2100 km, we need to calculate distance traveled in 1 hour</em>
<em>Distance traveled in 1 hour = 600 km ÷ 8</em>
<em>                                              = 75 km</em>
<em>Time required to travel 2100 km = 2100 ÷ 75</em>
<em>                                                         = </em><em>28 hours</em>
Therefore time required to travel 2100 km is 28 hours.
 
        
             
        
        
        
Answer:
21.2
Step-by-step explanation:
 
        
                    
             
        
        
        
Answer: 7/8
Cos2x has 3 formulas, Sinx is given in the question, we should use the formula with sinus. I guess that's the solution. 
 
        
             
        
        
        
X would equal -6.5. I hope this helps.