Which system of equations has exactly one solution?
-
2x-4y= 8
x+y=7
3x+y=-1
x-2y =-2
3x+3y=3
-Ex-by=3
3x-2y=4
-3x+2y=4

Answer asap! show all work! find the number of complex roots, the possible number of real roots and the possible rational roots of the polynomial function. then, solve for all roots. x^3 + 2x^2 + 3x + 6 = 0

Vinny is interviewing for a job.he wants his take home pay to be at least $42,000.what is the least salary he can earn if he pays 25% income tax?

Arectangular courtyard is 12 feet long and 8 feet wide. a tile is 2 feet long and 2 feet wide. how many tiles are needed to cover the courtyard?