Which expression represents the phrase , “one third the sum of 12 and a number

1/3(x + 12).

Step-by-step explanation:

That would be 1/3(x + 12).

The sum of a number and 12 is x + 12 and we multiply that sum by 1/3.

{3 + i, 3 - i, 3, -1}

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 %