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Kipish [7]
3 years ago
6

In your top dresser drawer are 6 blue socks and 10 grey socks, unpaired and mixed up. one dark morning you pull two socks from t

he drawer (without replacement, of course!). what is the probability that the two socks match?
Mathematics
1 answer:
beks73 [17]3 years ago
4 0
We'll use the formula for the classical probability as follows.

P(A) = Number of outcomes favorable for A / Total number of possible outcomes

In this case, two socks are randomly drawn from a set of 6+10 = 16 socks. So the total number of possible outcomes = 16C2 = 120.

The two stocks match each other if they are both blue or grey. So the number of favorable outcomes is 6C2 + 10C2 = 15 + 45 = 60.

Hence the probability that the two stocks match is \frac{60}{120}=0.5.
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18=9(x²+6x)

We take the value of b (the coefficient of x), divide it by 2 and square it:
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This is the value that completes the square.  However, since the entire square is multiplied by 9, this value must be multiplied by 9 before we can add it across the equals:
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Dividing both sides by 9, we have:
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