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kkurt [141]
3 years ago
13

Carol ate 2/5 of the cake. Dima ate 3/5 of the REMAINING CAKE, mom ate the rest.

Mathematics
1 answer:
dlinn [17]3 years ago
5 0
"<span>How many times more did Carol eat compared to Dima?" is quite different from the previous question, in which you asked "how much more did Carol eat than Dima?"  I think they ate 10/25 and 9 /25 of the cake, respectively.

10/25 is greater than 9/25, obviously.  We need to calculate "how many times greater is 10/25 than 9/25?  So we divide 9/25 INTO 10/25.  This comes out to 10/9, or 1.11 times as much.  Carol eats 11% more cake than Dima.  Hope she doesn't gain too much extra weight.   ;)</span>
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P(X=35) = \frac{1}{38}

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P(X=i) = 0 \;if\; i \neq 38, i\neq -1

The mean for one bet is E(X) = \sum xP(X=x) = 35\times\frac{1}{38} - 1\times\frac{37}{38} = -0.0526

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Answer B.
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