The nth term and the sum of n terms of a geometric series are 5 and 55 respextively if the common ratio is -1/2 then find the value of n and firsr term

understand that i don't know the answers

will someone answer his question

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 %

roots are from trees

step-by-step explanation: