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3 years ago

Name one possible cross section of a sphere

2 answers:

8 0

A "cross section" is basically the two-dimensional face that you get when you cut a three-dimensional figure a certain way. For example, imagine you're buttering your bread. When you cut a pat of butter off, what shape is left on the butter? A square!

So, imagine cutting a ball in half. What shape is left? A circle!

Answer: circle

VLD [36.1K]3 years ago

8 0

The answer would be a circle.imagine a watermelon right,cutting it in half, you would see a circle that forms inside of the watermelon

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The NWBC found that 42.1% of women-owned businesses provided retirement plans contributions.

Natasha_Volkova [10]

Answer:

Sample size of 586 or higher.

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 level of $1-\alpha$ , 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 $1 - \frac{\alpha}{2}$ .

The margin of error is:

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

95% confidence level

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

What sample size could be 95% confident that the estimated (sample) proportion is within 4 percentage points of the true population proportion?

Sample size of at least n when $M = 0.04$

42.1% of women-owned businesses provided retirement plans contributions, which means that $p = 0.421$ . So

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

$0.04 = 1.96\sqrt{\frac{0.421*0.579}{n}}$

$0.04\sqrt{n} = 0.9677$

$\sqrt{n} = \frac{0.9677}{0.04}$

$\sqrt{n} = 24.19$

$\sqrt{n}^{2} = (24.19)^(2)$

$n = 585.2$

We need a sample size of 586 or higher.

3 0

3 years ago

what plan would great a two house legislature with representation decided only by a states population

Elodia [21]

The proposal that called for a two house legislature with one house having equal representation for each state and the other having representation based on population was the

The Constitutional Convention's agreement to establish a two-house national legislature, with all states having equal representation in one house and each state having representation based on its population in the other house.

4 0

3 years ago

R(x)=f(x)−g(x), where f(x)=x+1/x+3 and g(x)=x+17/x^2−x−12.

aliya0001 [1]

Answer:

$\frac{x^2-4x-21}{(x+3)(x-4)}$