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3 years ago

I need some help with the question please! Which represents an equation for inverse variation?

Mathematics

1 answer:

Ilia_Sergeevich [38]3 years ago

8 0

Answer:

it is C. y=3/x

Step-by-step explanation:

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The area of a triangle is 54 cm2. The base is 18 cm. What is the height of the triangle? Let h represent the height of the trian

Margaret [11]

Hi,

h = 2 a/b so our answer would be 6. The height of the triangle is 6.

Have a great day!

7 0

3 years ago

Out of 100 people sampled, 42 had kids. Based on this, construct a 99% confidence interval for the true population proportion of

maksim [4K]

Answer:

The 99% confidence interval for the true population proportion of people with kids is (0.293, 0.547).

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 z-score that has a p-value of $1 - \frac{\alpha}{2}$ .

Out of 100 people sampled, 42 had kids.

This means that $n = 100, \pi = \frac{42}{100} = 0.42$

99% confidence level

So $\alpha = 0.01$ , z is the value of Z that has a p-value of $1 - \frac{0.01}{2} = 0.995$ , so $Z = 2.575$ .

The lower limit of this interval is:

$\pi - z\sqrt{\frac{\pi(1-\pi)}{n}} = 0.42 - 2.575\sqrt{\frac{0.42*0.58}{100}} = 0.293$

The upper limit of this interval is:

$\pi + z\sqrt{\frac{\pi(1-\pi)}{n}} = 0.42 + 2.575\sqrt{\frac{0.42*0.58}{100}} = 0.547$

The 99% confidence interval for the true population proportion of people with kids is (0.293, 0.547).

7 0

3 years ago

Can someone tell me the answer to this please???

romanna [79]

Measure of x is 74 degrees

4 0

2 years ago

Which equation represents the standard form of the equation y= (x + 3)² - 4?

lilavasa [31]

Answer:

The answer is B. $y = x^2 + 6x + 5$

Step-by-step explanation:

Because $y = (x + 3)^2 - 4 = x^2 + 6x + 9 - 4 = x^2 + 6x + 5$

So the answer in this question is B.

4 0

2 years ago

Which values are solutions to the inequality below? <br><br>Check all that apply.

Ronch [10]

You have to plug them in to see each solution, so the answers that apply would be 65 and 66 all the other answers are less than or equal to 8

3 0

3 years ago