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expeople1 [14]
3 years ago
7

The following represents the probability distribution for the daily demand of microcomputers at a local store. Demand Probabilit

y 0 .1 1 .2 2 .3 3 .2 4 .2 The expected daily demand is _____.
Mathematics
1 answer:
konstantin123 [22]3 years ago
8 0

Answer:

The correct answer is 2.2.

Step-by-step explanation:

The following represents the probability distribution for the daily demand of microcomputers at a local store:

Demand Probability

f(0)= .1

f(1)= .2

f(2)= .3

f(3)= .2

f(4)= .2.

Expectation of a discrete probability function f of the random variable x is given by ∑ x × f(x).

Thus the expected value of  demand is given by

0.1 × 0 + 0.2 × 1 + 0.3 × 2 + 0.2 × 3 + 0.2 × 4 = 2.2.

The expected daily demand is 2.2.

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MatroZZZ [7]
1. 550 pages left

55×4=220+330=550

2. 10 hours

330÷55=6+4=10
3 0
3 years ago
Read 2 more answers
1. 2x+5(6x-9)=179<br>2. -40=6x-5(-4x-18)<br>solve for X​
pav-90 [236]

Answer:

1. x = 7

2. x = -5

Step-by-step explanation:

1. Rearrange the equation by subtracting what is to the right of the equal sign from both sides of the equation: 2*x+5*(6*x-9)-(179)=0

Pull out like factors  6x - 9  =   3 • (2x - 3)

 (2x +  15 • (2x - 3)) -  179  = 0

Pull out like factors: 32x - 224  =   32 • (x - 7)

Solve: x-7 = 0

Add  7  to both sides of the equation  = 7

2. Rearrange the equation by subtracting what is to the right of the equal sign from both sides of the equation: -40-(6*x-5*(-4*x-18))=0

Pull out like factors: -4x - 18  =   -2 • (2x + 9)

 -40 -  (6x -  -10 • (2x + 9))  = 0

Pull out like factors:  -26x - 130  =   -26 • (x + 5)

-26 • (x + 5)  = 0

Solve: x+5 = 0

Subtract  5  from both sides of the equation: x = -5

Hope this helps! Please mark as brainliest.

Thanks!

5 0
3 years ago
10
lutik1710 [3]

Answer:

D. $0, $20, $90

Step-by-step explanation:

If X represents the amount you win, then possible outcomes for X are $0, $20, and $90.

4 0
3 years ago
2x+3y=11, solve for y
lesya [120]
Hope it helps with your work

4 0
3 years ago
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jaden made a pot of chili with 48 ounces of ground beef and 2 tablespoons of chili powder.he made another pot of chili with the
dexar [7]

Answer:

1/2 pound.

Step-by-step explanation:

Conversions: 48 oz = 3 lb

The ratio in the new pot is 3*2 tbs : 3 pounds , or just 6:3, which simplifies to 2:1. This means for every two tbs of powder, 1 lb of beef is used. This means that for every one tbs, 1/2 lb of beef is used.

8 0
3 years ago
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