A gangplank is a narrow ramp used for boarding or leaving a ship. It stretches from the ship down to the dock and provides guest with a safe way to board and exit a
ship. The maximum safe angle of elevation for a gangplank is 20°. Suppose a
gangplank is 10 feet long. What is the closest a ship can come to the dock for the
gangplank to be used?

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step-by-step explanation:

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 %

44

step-by-step explanation:

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