3 years ago

Write -2x 2(-5x 2 +4x 3) in standard form.

Mathematics

1 answer:

Anvisha [2.4K]3 years ago

6 0

This in standard form is -28x + 10.

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n200080 [17]

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55 degrees is more unusual in July as it is away from mean temperature as compared to January.

Step-by-step explanation:

We are given the following information in the question:

January:

Mean, μ = 36 degrees

Standard Deviation, σ = 10 degrees

July:

Mean, μ = 74 degrees

Standard Deviation, σ = 8 degrees

We calculate z scores corresponding to x = 55.

Formula:

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

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July:

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Thus, 55 degrees is more unusual in July as it is away from mean temperature as compared to January.

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