20shearcorr
22.05.2021 •
Mathematics
Your drawer contains 9 black socks and 10 white socks. You randomly choose two socks. Without replacing the first one, what is the probability that you choose 1 white sock, then 1 black sock after? *
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Ответ:
10 / 38
Step-by-step explanation:
Black socks = 9
White = 10
Total = 10 + 9 = 19
Choosibg without replacement :
P(white) = 10 / 19
Second pick:
P(black) = 9 / 18 = 1/ 2
P(white then black) = 10/19 * 1/2 = 10/38
Ответ:
SIN 55 degrees = 21000/x
X = 21000/SIN 55
Approximately 25,636.3