Solve the equation by completing the square. Round to the nearest hundredth if necessary.
x^2 - 3x - 12 = 0
A) 3.12, 3.77
B) 4.74, -1.74
C) -12.75, 15.75
D) 5.27, -2.27

answer:

what is your question that you ask

step-by-step explanation:

answer:   35 % is the probability of a late departure or an early arrival.

step-by-step explanation:

let l represents the late departure and e represents the early departure.

then, according to the question,

p(l) = 12 %,   p(e) = 27 % and = 4 %

and, we have to find out,

but, we know that,

which is the required equation that will use to find the probability of a late departure or an early departure.

therefore,   the probability of a late departure or an early arrival =   35 %