Need answer real quick due today

+7  or -7

Step-by-step explanation:

25^2 - 24^2 = b^2

625 - 576 = b^2

49 = b^2

+7 or -7 = b

irrational, cannot

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 %