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3 years ago

9

Solve for y 2 y = A 2Y + B + A B

1 answer:

Alex787 [66]3 years ago

3 0

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Suppose I have an urn with 9 balls: 4 green, 3 yellow and 2 white ones. I draw a ball from the urn repeatedly with replacement.

Mrrafil [7]

Answer:

$E(X_n)=\frac{2(n-1)}{27}$

$E(y)=\frac{14}{9}$

Step-by-step explanation:

From the question we are told that:

Sample size n=9

Number of Green $g=4$

Number of yellow $y=4$

Number of white $w=4$

Probability of Green Followed by yellow P(GY) ball

$P(GY)=\frac{4}{9}*\frac{3}{9}$

$P(GY)=\frac{4}{27}$

Generally the equations for when n is even is mathematically given by

$Probability of success P(S)=\frac{4}{27}$

$Probability of Failure P(F)=\frac{27-4}{27}$

$Probability of Failure P(F)=\frac{23}{27}$

Therefore

$E(X_n)=\frac{n}{2}*P$

$E(X_n)=\frac{n}{2}*\frac{4}{27}$

$E(X_n)=\frac{2n}{27}$

Generally the equations for when n is odd is mathematically given by

$\frac{n-1}{2}$

$E(X_n)=\frac{n-1}{2}*\frac{4}{27}$

$E(X_n)=\frac{2(n-1)}{27}$

b)

Probability of drawing white ball

$P(w)=\frac{2}{9}$

Therefore

$E(w)=\frac{1}{p}$

$E(w)=\frac{1}{\frac{2}{9}}$

$E(w)=\frac{9}{2}$

Therefore

$E(y)=[E(w)-1]\frac{4}{9}$

$E(y)=[\frac{9}{2}-1]\frac{4}{9}$

$E(y)=\frac{14}{9}$

5 0

3 years ago

If triangle XYZ is congruent to triangle RST find RS

Alina [70]

Answer:

If two triangles Δ RST and Δ XYZ are similar, then corresponding angles are equal and their corresponding sides are proportional.

So here ∠R=∠X, ∠S=∠T and ∠T=∠Z

7 0

3 years ago

Read 2 more answers

If the exterior angel of a triangle measures 130 degrees, then what is the sum of the non-adjacent interior angles of that trian

torisob [31]

$TRIANGLES \\ \\ Heya \: ! \\ \\ \\Check \: \: the \: \: attachment. \\ Hope \: it \: helps \: you :)$

8 0

3 years ago

Q; f (x) = 3 / x+4

kvasek [131]

Y= (3/x) - 4. You switch the X and Y and then get the Y by itself

8 0

3 years ago

1) The cost of 3-D movies tickets is $24 for 2 tickets, $36 for 3 tickets and $48 for 4 tickets.

lys-0071 [83]

Answer:

a) Yes, i think it does represent a proportional relationship because the prices all go up by 12$.

b) The constant of proportionality is 12.

c) The equation would be 12(t) t= tickets idrk how else to put the equation feel free to correct me if im wrong.

D) the graph would look like : on the x axis would go up by 1,2,3,4,5,6 and so on, and on the y axis, count by 12's. (ex. 12,24,36,48)

E) The cost of 7 tickets would be 84$

Step-by-step explanation:

I explained above.

7 0

4 years ago