20)
Which cylinder has the greatest volume?
Formulas
A)
the regular cylinder
B)
the oblique cylinder
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cannot be determined
they have the same volume
21)

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 %

the answer is -1 1/5, also a

hope i

-lavira : )

step-by-step explanation:

i think its about 8