simplify the following expressions
x2 x-2/3
x1/4/ x-5/2
(4/5)x-2/5 y3/2 / (2/3) x3/5y1/2
(2/3)x2/3y2/3 / (1/3)x-1/3y-1/3
(z2/3 x2/3y-2/3 ) y + (z2/3 x-1/3y-1/3 ) x
(4x3/5y3 z2 ) 1/3

Step-by-step explanation:

For each case we have the next step by step solution.

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 %