1. (1/3) * (3/5) = 3/15
2. 3 1/3
3. So 3 1/3 * 2 1/4 = 6 1/2 C
HI!
First of all, there are total 12 + 2 + 6 = 20 pairs of socks.
Probability of getting a pair of white socks the first time is 12/20.
Probability of getting a pair of gray socks without replacement, if first one was white, is 2/19
Therefore the probability t<span>hat she will take a white pair and gray pair</span> without replacement is 6/95 (I multiplied the two probabilities)
Let me know if there are any other questions!
3. Binomial Formula: ( a + b ) ( a - b ) = a^2 - ab + ba - b^2 = a^2 - b^2
4x^2 - 25 = (2x - 5)(2x + 5)
Answer:
8
Step-by-step explanation:
Hay 8 planetas. Antes había 9 pero ahora Plutón no es una planeta, es una planeta enano.
