aiken11192006
09.01.2021 •
Mathematics
Find the sale price of the item. Round to two decimal places if necessary.
Original price: $233.70
Markdown: 76%
The sale price is $
Solved
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Ответ:
$56.09
Step-by-step explanation:
76% of $233.70 is $177.61
$233.70 - $177.61 = $56.09
Ответ:
Option C
Step-by-step explanation:
Let X be a discrete random variable that counts the number of siblings a randomly selected student has. Then the expected value of X is defined as:
Where is the probability that a randomly selected student has siblings
With
So in this case we know that
#of siblings 0 1 2 3 4 5
probability 0.20 0.65 0.08 0.04 0.02 0.01
Therefore:
The answer is the option C.