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stiv31 [10]
3 years ago
8

Match each variable with what it represents in a sequence formula.

Mathematics
1 answer:
kvasek [131]3 years ago
5 0

Answer:

gay

Step-by-step explanation:

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A bag contains 5 red marbles, 4 blue marbles, 3 green marbles, and no other marbles. If a marble is chosen at random from the ba
MAXImum [283]

Answer:

A = choosing a red marble

B = choosing a green marble

Probability of A happening = P(A) = 5/(3+5+4) = 5/12

Probability of B happening = P(B) = 4/(3+5+4) = 4/12

Probability of either happening = P(A) + P(B) = 5/12 + 4/12 = 7/12

The key word in their question is red OR green and that is why we add the two probabilities. If they ask the probability of them both happening (if they said red AND green), you would multiply P(A)*P(B).

3 0
3 years ago
Read 2 more answers
Monica has 5 red cubes, 6 blue cubes, and 4 green cubes in a bag. She randomly chooses 9 cubes and gets 3 of each color.
aleksandrvk [35]
Red blue green so 3
7 0
3 years ago
3 tools federal reserve use to enact monetary policies
Vinil7 [7]

<u>The three important tools of Federal Reserve's monetary policies are as follows:</u>

  • open market operations
  • the discount rate
  • reserve requirements.

<u>Step-by-step explanation:</u>

The monetary policies of the United States's central bank, Federal Reserve are the acts of the entity to influence money and raise the country's economy. These policies also helps in looking over the aspects of how the money and credits draw affects on credit rates and the overall performance of the U.S. Economy.

The three prime tools of the Federal reserve's monetary policies are the Open Market Operations, Discount Rates and the Reserve Requirements.

<u>Open Market operations</u>

This involves in purchase and selling process of government securities. The primary dealer with which the Reserve deals compete on the basis of prices and thus the dealer gets decided with whom the reserve deal for the day.

<u>Discount Rates</u>

This is the discount rate charged to depository institutions for short term loans by the Federal Reserve.

<u>Reserve Requirements</u>

This is the money or deposit amount the Reserve Bank must sustain in its vault or depository.

5 0
3 years ago
Solve the system below by elimination -2x-9y=-25
xz_007 [3.2K]
I think it’s 2x+9y-25=0
3 0
3 years ago
A vendor converts the weights on the packages she sends out from pounds to kilograms (1kg approximately equals 2.2 pounds).
Alexxx [7]

Answer:

a) b) the standard deviation and the mean is affected by the conversion factor as well

c)  the mean is displaced by b units

Step-by-step explanation:

for a new variable

Y=a*X  , where a= constant (conversion factor= 1 kg/2.2 pounds)

then

p(y)= p(a*X) = p(X)

a) mean =μ=E(Y)= ∑ a*X*p(y) = a ∑ X*p(x) = a* E(X)

mean =μ=a*μₓ

b) σ² = ∑ (Y-μ)²* p(y) =  ∑ (a*X-a μₓ)²* p(y) = a²*∑ (X-μₓ)²* p(x) = a²*σₓ²

then

standard deviation = σ= √σ²=√(a²*σₓ²) = a*σₓ

standard deviation = σ= a*σₓ

then the standard deviation and the mean is affected by the conversion factor as well

c) nevertheless for a displacement b

Y₂=X + b (b= constant= 50 gr)

p(Y₂)= p(X + b) = p(X)

then

mean =μ=∑ (X-b)*p(y)=∑ X*p(x)- b ∑ p(x) = E(X) -

mean =μ=μₓ - b

then the mean is displaced by b units

7 0
3 years ago
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