Which system of linear equations has no solution?
a)
-5x + 2y = -8
- x + y = -4
b)
-5x + 2y =-8
5x + 2y = 8
c)
-5x + 2y = -8
25x - 10y = 40
d)
-5x + 2y = -8
-5x + 2y = 8

125 tickets were sold for the jazz band concert for a total of $1,022. students tickets cost $6 each, and general admission tickets cost $10 each. how many of each kind of tickets were sold?

Is a positive integer raised to a negative power always positive

Evaluate the discriminant of each equation. tell how many solutions each equation has and whether the solutions are real or imaginary. x^2 - 4x - 5 = 0