18 of the last 30 cars cars that passed you were black. what is the probability the next car will be black?

P ( black car) = 3/5

Step-by-step explanation:

P( black car) = black cars/ total cars

                     = 18/30

                     = 3/5

x = ± 6i

step-by-step explanation:

x^2 = -36

take the square root of each side

sqrt(x^2) = sqrt(-36)

we know sqrt(ab) = sqrt(a) sqrt(b)

x = ±sqrt(36) sqrt(-1)

we know that sqrt (-1) = i

x = ± 6i