How do you solve 4x 5y = -7 and 3x - 6y = 24 using matrices?

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

How can you check that you have correctly converted frequencies to relative frequencies?

Over the last 4 seconds, a snail has traveled 4/9 of an inch. if the snail traveled the same distance each second, how far did it travel each second?