Simplify
Q1) 4a + 7b +5a - b
Q2) 9s - 5s + 2s - s
Q3) 8t + 3r - 7t - 9r

the reporter's right

step-by-step explanation:

1/4 = .25 / 25%

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 %

try soting them out first

step-by-step explanation: