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KATRIN_1 [288]
3 years ago
12

If 2x^2 - 5x + 7 is subtracted from 4x^2 + 2x - 11, what is the coefficient of x in the result

Mathematics
2 answers:
ahrayia [7]3 years ago
7 0

Answer:-3

Step-by-step explanation:

WARRIOR [948]3 years ago
3 0

Answer: 4 x 2 + 2 x - 11 = 2 x 2 - 5 x 7 + 0

Step-by-step explanation: The answer above

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Answer:

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The (1 - <em>α</em>)% confidence interval for the population mean, when the population standard deviation is not provided is:

CI=\bar x \pm t_{\alpha/2, (n-1)}\cdot \frac{s}{\sqrt{n}}

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*Use a <em>t</em>-table.

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\bar x=\frac{1}{n}\sum X=\frac{1}{50}\times [1+5+6+...+10]=6.76\\\\s=\sqrt{\frac{1}{n-1}\sum (x-\bar x)^{2}}=\sqrt{\frac{1}{49}\times 31.12}=2.552

Compute the 95% confidence interval estimate of the population mean rating for Miami as follows:

CI=\bar x \pm t_{\alpha/2, (n-1)}\cdot \frac{s}{\sqrt{n}}

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