if 3,400 acasia tree are counted on a 5 km x 7 km rectangular patch of land, what is the density of acsia trees per square meter?
b=2.5+a
4x+y=16, 12x-2y=8
3y-x=7, 4x-7y=2
x^2 + 1/x = 72,78
238-79=
8.2a+11.2b-5c=10
9.7c-5b=10
-3569.18=1678.65
-3569.18-1678.65
i have 5 niggers each costs 20 dollars i sold 3 niggers how much dollars did i get?