2 years ago

Kay has a playlist of 10 songs. She has time to listen to 4 of the songs on her way to school.

Mathematics

1 answer:

Masteriza [31]2 years ago

8 0

Answer:

40 different arrangements of songs

Step-by-step explanation:

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Find a polynomial f(x) of degree 3 that has the following zeros.

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Answer:

f(x) = x(x - 4)(x + 3)

Step-by-step explanation:

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f(x) is then the product of these factors

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2 years ago

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3 years ago

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A sign on the pumps at a gas station encourages customers to have their oil checked, and claims that one out of 10 cars needs to

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Answer:

0.2916, 0.1488, 0.0319

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Given that a sign on the pumps at a gas station encourages customers to have their oil checked, and claims that one out of 10 cars needs to have oil added.

Since each trial is independent there is a constant probability for any random car to need oil is 0.10

Let X be the number of cars that need oil

A) Here X is BIN(4,0.1)

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C) Here X is Bin (20,5)

$P(x=5) = 20C5 (0.1)^5 (0.9)^{15} \\=0.0319$

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3 years ago