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Evgesh-ka [11]
3 years ago
13

What is the value of k? k = 28 k = 29 k = 31 k = 42

Mathematics
1 answer:
elena-14-01-66 [18.8K]3 years ago
8 0
K=29 is the correct answer
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PLEASE HELP!!!!
Bogdan [553]

Answer:

Step-by-step explanation:

We would apply the formula for binomial distribution which is expressed as

P(x = r) = nCr × p^r × q^(n - r)

Where

x represent the number of successes.

p represents the probability of success.

q = (1 - r) represents the probability of failure.

n represents the number of trials or sample.

From the information given,

p = 18% = 18/100 = 0.18

q = 1 - p = 1 - 0.18

q = 0.82

n = 5

Therefore,

P(x ≤ 2) = p(x = 0) + p(x = 1) + p(x = 2)

P(x = 0) = 5C0 × 0.18^0 × 0.82^(5 - 0)

P(x = 0) = 0.37

P(x = 1) = 5C1 × 0.18^1 × 0.82^(5 - 1)

P(x = 1) = 0.41

P(x = 2) = 5C2 × 0.18^2 × 0.82^(5 - 2)

P(x = 2) = 0.18

Therefore,

P(x ≤ 2) = 0.37 + 0.41 + 0.18 = 0.96

5 0
2 years ago
(3-x)(x-5)<br> Hurry PLZ
marshall27 [118]

Answer:

-3x^2 + 15x

Step-by-step explanation:

(3 - x) (x - 5)

=> (3x - 15) ( -x)

=> -3x^2 + 15x

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3 years ago
The city plans a roadway to have trees every mile. If the path is miles long, how many trees will the city need?
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Answer:

32

Step-by-step explanation:

the country would need 30 to 33 trees

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3 years ago
Arianna runs up 4.5 flights of stairs. How far will Arianna have to run down to represent an additive inverse?
nignag [31]
Yes she would. bc she run up 4.5 and since she is goin back down the same amount it would be negative and so she will end up at 0
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3 years ago
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Last week, Kip went to the fair. It costs $3.50 to enter the fair and $0.75 per ticket. In the equation below, x represents the
marissa [1.9K]

Answer:

16 tickets

Step-by-step explanation:

15.50-3.50=12

12/0.75=16

4 0
3 years ago
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