(7+4i)+0=7+4i. 
Hope it helps
        
                    
             
        
        
        
Given a fragpole which makes a right angle with the point of observation with the angle of elevation as 50°.
Let x be the height of the flagpole, then

Therefore, the <span>equation that could be used to find the height of the flagpole is 
</span><span>x/5 = sin 50</span> 
 
        
             
        
        
        
Need some Some big brain so here take some
        
             
        
        
        
Answer:
2
Step-by-step explanation:
F(3) means that we plug in 3 for the x value of the original equation, and F(4) means that we plug in 4 for the x value of the original equation 
F(3) = -2(3) + 3 
= -3 
F(4) = -2(4) + 3
= -5
- 3 -(-5) = 2
 
 
        
                    
             
        
        
        
Answer:
4500
Step-by-step explanation:
multiply the amount of times the heart beats every minute and multiply it by how many minutes which is 60 so 75 times 60 is 4500