I believe it would be 4 lil man
        
             
        
        
        
Answer:
a = 0,-7
Step-by-step explanation:
a^2 + 7a=0
Factor out an a
a(a+7) =0
Using the zero product property
a=0   a+7 =0
a =0  a= -7
 
        
                    
             
        
        
        
Joe: 8 songs in 10 minutes = 8/10 = 0.8 songs per minute
Jasmine: 12 songs in 15 minutes = 12/15 = 0.8 songs per minute
 they are downloading at the same speed
 
        
             
        
        
        
Math is used in construction everywhere.Math is used in construction to measure parts, how many feet, inches, etc. to do and how high to go up.A great example is in the scaling of blueprints, where an architect creates a scale model of the building so that it can fit on paper.
        
                    
             
        
        
        
Hello:
the standard equation of a circle : <span>(x – h)2 + (y – k)2 = r2
ridus : r   center A(h , k )</span>