23rwilliamson
05.04.2021 •
Mathematics
Questions 7 and 8 please. Really need help thank you!!
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Ответ:
7) sin 60° = 25√3/Z
0.8660 = 25√3/Z
Z = 50
8) using the Pythagorean theorem:
50² = (25√3)² + y²
2500 = 1875 + y²
y² = 625
y = 25
Ответ:
0.4625 or 46.25%
Step-by-step explanation:
The data for the percentage of contribution and the percentage of numbers from each suburb is presented in the table bellow:
The probability that she gets a donation is given by the sum of the probabilities of getting a donation from each suburb weighed by their respective percentage of numbers of the list:
The probability that she gets a donation is 0.4625 or 46.25%.