It's C or A
Step-by-step explanation
this is because of the Commutative Property.
 
        
             
        
        
        
2x²-10xy+3xy-15y²
Add like terms.
2x²+ (-10xy+3xy) -15y²
Simplify.
2x² + (-7xy) - 15y²
Rearrange the equation.
2x²-15y²-7xy
~Hope I helped~
        
                    
             
        
        
        
5 1/4 m = 5.25m
50 cm = 0.5 m
So 5 1/4 m - 50 cm = 5.25 - 0.5 = 4.75 m
 
        
                    
             
        
        
        
Answer: $310,000
Step-by-step explanation:
In 40 additional years, the amount she made less than her college counterparts was;
= 10,000 * 40
= $400,000
She however made $90,000 more than them as they went to college;
= 400,000 - 90,000
= $310,000
The long-term financial cost was $310,000.
 
        
             
        
        
        
That is the centroid.
The point where the lines from each vertex of the triangle  to the midpoints of the opposite sides intersect.