Answer:
a
Step-by-step explanation:
Answer:3.4,0.49,0.56,0.78
Step-by-step explanation:
x + 2y = 5 /* (-1)
3x + 2y = 9
__________
-x - 2y = -5
3x + 2y = 9
add these two equations
_______________
2x = 4
x = 4/2 = 2$ for a hotdog
2y = 5 - x = 5 - 2 = 3 => y = 3/2 = 1.5$ for a hamburger
Answer:
n (aub)= n (a)+ n(b)
n (anb) = n (a)-n (b)
only a= n(a)+n(b) -(aub)
n only b= n (a)+n (b)-n (anb)
now solve your self because this formula help to solve
