In a race, Brian Collins has to cross 10 hurdles. The probability that he clears a hurdle is 2/3 Find P(clears exactly 2 hurdles).

step-by-step explanation:

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answer: 7

step-by-step explanation:

first, you divide the triangle in two, tô form a retangle triangle. after, using pythagoream theorem:

18^2 = 14^2 + (x/2)^2

(x^2/4) + 196 = 324

x^2/4 = 324 - 196

x^2/4 = 128

x^2 = 512

x = √512

x = √2^9

x = 16√2 cm

i hope i you.