2 points 12. Andrea has 8 blue socks and 4 red socks. She chooses one sock at
random and puts it on. She then chooses another sock without looking. If
the first sock is red, find the probability that the second sock will also be
red.
1/12
2/11
1/6
3/11

in problems involving proportions, we can use cross products to test whether two ratios are equal and form a proportion. to find the cross products of a proportion, we multiply the outer terms, called the extremes, and the middle terms, called the means.

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they charge the same amount at 20 minutes.

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