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Arte-miy333 [17]
3 years ago
10

A bag contains 9 marbles: 3 are green, 4 are red, and 2 are blue. Martina chooses a marble at random, and without putting it bac

k, chooses another one at random. What is the probability that the first marble is red and the second is blue? Write your answer as a fraction in simplest form.
Mathematics
1 answer:
Nana76 [90]3 years ago
4 0
The probability that the first one is red is: 4/9
The probability of the second one is blue is: 2/9
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\bf S_9=256\left(\cfrac{1-(-0.25)^9}{1-(-0.25)}  \right)\implies S_9=256\left( \cfrac{1+0.25^9}{1+0.25} \right) \\\\\\ S_9=256\left(  \cfrac{52429}{65536}\right)\implies S_9=\cfrac{52429}{256}\implies S_9=204.80078125

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1 pt) If a parametric surface given by r1(u,v)=f(u,v)i+g(u,v)j+h(u,v)k and −4≤u≤4,−4≤v≤4, has surface area equal to 1, what is t
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