12335589
05.05.2020 •
Mathematics
In a science class of twenty-eight students. 12 boys and girls. On a unit test, 4 boys and 10 girls made an A grade. A student is chosen at random from the class. What is the probability of choosing a boy or an A student?
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Ответ:
Step-by-step explanation:
probability of choosing a boy = 12 / 28 = 3 / 7
in % = 3 / 7 x 100 = 42,86%
probability of choosing an a student = (4 + 10) / 28 = 14 / 28 = 1 / 2
in % = 1 / 2 x 100 = 50%
Ответ:
about 23000
Step-by-step explanation: