Use De Morgan’s law for quantified statements and the laws of propositional logic toshow the following equivalences:.a) ¬ x(P (x) ¬Q(x)) x(¬P (x) Q(x))∀∧≡∃∨b) ¬ x(¬P (x) = Q(x)) x(¬P (x) ¬Q(x))∀⇒≡∃∧c) ¬ x(¬P (x) (Q(x) ¬R(x))) x(P (x) (¬Q(x) R(x)))

3/6   and 9/18

step-by-step explanation:

i think it will be zero as slope has a formula of difference between initial and final distance divided by itz time interval

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 %