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3 years ago

Is this a irrational or rational number?

Mathematics

1 answer:

Musya8 [376]3 years ago

4 0

The value 18 is rational but the sqrt(5) is irrational. Multiply a rational with an irrational, and you get irrational. Overall, the entire expression is irrational. There is no way to represent this value as a fraction of whole numbers.

note: "sqrt" is shorthand for "square root"

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Answer:

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2 years ago

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3 years ago

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emmasim [6.3K]

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Step-by-step explanation:

Z- score:

In a set with mean $\mu$ and standard deviation $\sigma$ , the zscore of a measure X is given by:

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In this problem:

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Brittany:

Scored 88.3, mean 63.1, standard deviation 14. So

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$Z = \frac{88.3 - 63.1}{14}$