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3 years ago

What is the quotient if 2305÷294

Mathematics

1 answer:

stiks02 [169]3 years ago

8 0

Answer:

7.840136054421769

Step-by-step explanation:

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PLZ ANSWER PLZ PLZ PLZ HELP 1 QUESTION!!!

JulsSmile [24]

We first must find the value of angle z.

Angle z = 90° - 42°

Angle z = 48°

We now use the sine function to find y.

sin(48°) = 35/y

y = 35/sin(48°)

y = 47.0971455362

We now round off to two decimal places.

y = 47.10

I hope this helps....

8 0

3 years ago

What is 6n-10=8 show me how to do this problem

Lady bird [3.3K]

Answer: n=3

Step-by-step explanation:

6n-10=8

6n=18

n=3

You start by adding 10 to both sides and then divide both sides by 6.

4 0

3 years ago

Factor this equation: x^2-8xy^2+y^4

Fofino [41]

(x + 4y) • (x - 12y)

4 0

3 years ago

In the past, 21% of all homes with a stay-at-home parent, the father is the stay-at-home parent. An independent research firm ha

Afina-wow [57]

Answer:

A sample size of 79 is needed.

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 $1 - \frac{\alpha}{2}$ .

For this problem, we have that:

$\pi = 0.21$

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 is needed if the research firm's goal is to estimate the current proportion of homes with a stay-at-home parent in which the father is the stay-at-home parent with a margin of error of 0.09?

A sample size of n is needed.

n is found when M = 0.09. So

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

$0.09 = 1.96\sqrt{\frac{0.21*0.79}{n}}$