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2 years ago

Equivalent fractions of 4/5

Mathematics

2 answers:

Sonbull [250]2 years ago

5 0

$\frac{8}{10} \frac{16}{20} \frac{12}{15}$
Hope this helps :)

ddd [48]2 years ago

3 0

A fraction equivalent to 4/5 is 8/10,also 12/15.To find an equivalent fraction all you have to do is multiply the numerator and denominator by the same number.

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And replacing we got:

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And then the expected value would be:

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Step-by-step explanation:

We assume the following distribution given:

Y 0 1 2 3

P(Y) 0.60 0.25 0.10 0.05

Part a

We can find the expected value with this formula:

$E(Y) = \sum_{i=1}^n Y_i P(Y_i)$

And replacing we got:

$E(Y) =0*0.60 +1*0.25 +2*0.1 +3*0.05 = 0.60$

Part b

If we want to find the expected value of $100 Y^2$ we need to find the expected value of Y^2 and we have:

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And replacing we got:

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And then the expected value would be:

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