1 year ago

The go fish game tank contains 30 fish the probability of catching a purple fish is 1/3 the probability of catching a green fish

Mathematics

1 answer:

timofeeve [1]1 year ago

6 0

Answer:

2/3

Step-by-step explanation:

since they are just two colors of fish inside, since the probability is always 1.. so we have to minus 1/3 from 1,which is 1-1/3=2/3

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IRINA_888 [86]

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Answer:

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Step-by-step explanation:

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2 years ago

Solve for -2<-3-3x<0

gregori [183]

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3 years ago

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Triss [41]

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Step-by-step explanation: big brain

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2 years ago

Read 2 more answers

The sum of the first n terms of an arithmetic sequence is n/2(4n + 20).

lesantik [10]

Answer:

(a).

$S_{n} = \frac{n}{2} (4n + 20) \\ \\S _{n - 1} = \frac{(n - 1)}{2} (4n - 4 + 20) \\ \\ S _{n - 1} = \frac{(n - 1)}{2} (4n + 16) \\ \\S _{n - 1} = \frac{(n - 1)(4n + 16)}{2} \\ \\ { \boxed{S _{n - 1} = {2 {n}^{2} + 6n - 8}}} \\$

(b).

from general equation:

$S _{n - 1} = \frac{(n - 1)}{2} (4n + 16)$

first term is 4n

common difference:

$16 = \{(n - 1) - 1 \}d \\ 16 = (n - 2)d \\ d = \frac{16}{n - 2}$

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2 years ago