3 years ago

What does 1/9-(-2/5-8/9) equal?

Mathematics

1 answer:

babunello [35]3 years ago

6 0

1/9 - (-2/5 - 8/9) = 1/9 + 2/5 + 8/9 = 1 + 2/5 = 7/5 or 1 2/5

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The value of the function is 4 when x=3.

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Sean has $75 to spend on CDs. If each CD costs $6.98, about how many CDs can he buy?

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75/6.98=10.744
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The probability distribution function for the discrete random variable where x is equal to the number of red lights drivers typi

Ivahew [28]

Using probability concepts, it is found that:

a) The missing value is 0.04.

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$P(X = 1) = 0.15$

$P(X = 2) = 0.05$

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Item a:

The sum of <u>all the probabilities has to be 1</u>, that is:

$\sum_{i = 0}^{3} P(X = i) = 1$

Thus:

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$x = 0.04$

The missing value is 0.04.

Item b:

The mean is given by the <u>sum of each outcome multiplied by it's probability</u>, thus:

$E(X) = 0(0.76) + 1(0.15) + 2(0.05) + 3(0.04) = 0.37$

The mean is of 0.37.

A similar problem is given at brainly.com/question/20709747

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Product of 2 numbers increased by 9

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(X * y) + 9
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~Zoe

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