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trapecia [35]
3 years ago
8

How many variable terms are in the expression 3x to the third power Y plus 5X to the second power plus Y +9

Mathematics
1 answer:
andrew-mc [135]3 years ago
8 0

Well, variables are stuff like x and y because they can represent a number. They are variable in an equation. so if you have (3x^3)+(5X^2)+Y+9 then your variables are x X and Y (im assuming the capital X is there and not a typo) if that was a typo and meant to be lowercase, then its just a 2 variable with the x and y

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B (0.312, 0.364)

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In a sample with a number n of people surveyed with a probability of a success of \pi, and a confidence interval 1-\alpha, we have the following confidence interval of proportions.

\pi \pm z\sqrt{\frac{\pi(1-\pi)}{n}}

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z is the zscore that has a pvalue of 1 - \frac{\alpha}{2}

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1289 randomly selected American adults responded to this question. This means that n = 1289.

Of the respondents, 436 replied that America is doing about the right amount. This means that \pi = \frac{436}{1289} = 0.3382.

Determine a 95% confidence interval for the proportion of all the registered voters who will vote for the Republican Party. ​

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The lower limit of this interval is:

\pi - z\sqrt{\frac{\pi(1-\pi)}{n}} = 0.3382 - 1.96\sqrt{\frac{0.3382*0.6618}{1289}} = 0.312

The upper limit of this interval is:

\pi + z\sqrt{\frac{\pi(1-\pi)}{n}} = 0.3382 + 1.96\sqrt{\frac{0.3382*0.6618}{1289}} = 0.364

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3 years ago
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Step-by-step explanation:

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Now the general equation of parabola is

y=ax^2+bx+c\quad \ldots(i)

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-2=c

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a=\frac{-1}{12}\ \text{and}\ b=\frac{5}{12}

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