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3 years ago

Hey can anyone please give me an explanation to the conic section rules like the circle and the ellipse, parabola and hyperbola

1 answer:

4 0

Post a specific question about the conic section. Your best bet is to search You Tube for video clips about the conic section.

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| 3x | = 9 <br> | -3r | = 9 <br> b/5 = 1

Ierofanga [76]

|3x| = 9
|3x| = ±9
|3x| = 9 U |3x| = -9
3x = 9    U    3x = -9
   3    3     3     3
    x = 3    x = -3

|-3r| = 9
|-3r| = ±9
|-3r| = 9 U |-3r| = -9
   3r = 9 U    3r = -9
    3    3      3    3
    r = 3    r = -3

   ¹/₅b = 1
5(¹/₅b) = 5(1)
   b = 5

8 0

3 years ago

I need the answer and a explanation. simplify <img src="https://tex.z-dn.net/?f=%5Cfrac%7B%5Csqrt%7B18%7D%20%7D%7B%5Csqrt%7B81%7

Alex Ar [27]

I put the radical around the whole thing and then simplified the fraction

7 0

3 years ago

549.5 to 1 decimal place

olga55 [171]

Answer:

It is still 549.5

Step-by-step explanation:

Rounding to 1 decimal place is just rounding by the tenth place

So it is still 549.5

Hope this helps!

8 0

2 years ago

Read 2 more answers

In 2015 as part of the General Social Survey, 1289 randomly selected American adults responded to this question:

Radda [10]

Answer:

B (0.312, 0.364)

Step-by-step explanation:

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.

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

In which

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

For this problem, we have that:

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. 

So $\alpha = 0.05$ , z is the value of Z that has a pvalue of $1 - \frac{0.05}{2} = 0.975$ , so $z = 1.96$ .

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:

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

The 95% confidence interval is:

B (0.312, 0.364)

5 0

2 years ago

choli [55]

Answer:

$29.50

Step-by-step explanation:

The price that Rob paid includes a 15% discount. This means that Rob paid 85% of the original price.

100% - 15% = 85%

Divide the price Rob paid by the percentage the price is of the total.

85% = 0.85

50.15/0.85 = 59

Now, divide the total price by 2 so that you can find the price of one pair of jeans.

59/2 = 29.50

The price of one pair of jeans is $29.50

5 0

3 years ago