Answer:1/870
Step-by-step explanation:
The total number of student in Mr parietti class is 30 (18girls and 12boys). If a student is first chosen at random from the class. The probability of choosing 1 student out of 30 will be 1/30.
He then chose another student without replacing the first, the probability of choosing that second lady will be 1/29 (since the remaining students are 29).
the probability that both students chosen are girls will be 1/30×1/29 = 1/870
Answer:
Step-by-step explanation:
The answer is $72.90.
Change 9% into a decimal by dividing by 100. You get 0.09.
Multiply 0.09 by 810. You get 72.90 which is the answer.
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