If 20 articles cost $90,then the cost of 9 articles is

Mathematics

1 answer:

Tom [10]2 years ago

8 0

Answer:

$40.50

Step-by-step explanation:

90 divided by 20 is 4.5. then you multiply that times 9 and that's your answer.

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How to write g(x)=2x+3/x+1 in the form of:g(x)=a/x+p +q

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Hello,

Please write correctly.

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tia_tia [17]

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In this question,

A z-score measures exactly how many standard deviations a data point is above or below the mean. It allows us to calculate the probability of a score occurring within our normal distribution and enables us to compare two scores that are from different normal distributions.

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$z_{score} = \frac{x-\mu}{\sigma}$