Write the augmented matrix for each system of equations. -2x - 2y + 5z = 1 -5x - 5y + 72 = 4 9x - 2y + 2z = -1

If sin(x) = 0 and cos(x) = 1, what is tan(x)?

Aword processing program requires a 7- digit registration code made up of the digits 1,2,4,5,6,7 and 9 each number has to be used and no number can be used mor than once how many codes are possible

Solve the proportion of 16/50=x/156.25