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4 years ago

Which expression can be used to convert 5 meters per second to km per hour?

Mathematics

1 answer:

Genrish500 [490]4 years ago

8 0

Answer:

i dont even know duh

hehehe

Step-by-step explanation:

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Is 78% a reduction or enlargement

musickatia [10]

Answer:

enlargement

Step-by-step explanation:

<em>hope this helps. i am in algebra two so you can trust my answer. happy holidays and stay safe</em>

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5 0

3 years ago

Read 2 more answers

Find the slope of the line that passes through (8, 7) and (1, 6).

lana [24]

Answer:

B edge 2020

Step-by-step explanation:

3 0

3 years ago

Please help! It would mean a lot and thanks! :)

notsponge [240]

To add 1/2 and 5/12, make both fractions have the same denominator:

1/2 is the same as 6/12, so 6/12+5/12=11/12

Thus, B is right.

7 0

3 years ago

Which of following is the graph of y = -(x + 1)2 -3?

Len [333]

Answer:

See below.

Step-by-step explanation:

The graph of the quadratic equation is a parabola or u shaped graph. It has a vertex at (-1,-3) since h=-1 and k=-3 in the vertex form. It is also facing down since the leading coefficient is negative.

7 0

3 years ago

Read 2 more answers

Suppose it is known that 8 out of the 20 teams in the sample had a season winning percentage better than 0.500.

Ganezh [65]

Answer:

The 95% confidence interval for the true proportion of all teams that had a season winning percentage better than 0.500 is (0.1853, 0.6147).

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:

8 out of the 20 teams in the sample had a season winning percentage better than 0.500. This means that $n = 20, \pi = \frac{8}{20} = 0.4$ .

95% confidence interval

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:

$\pi - z\sqrt{\frac{\pi(1-\pi)}{n}} = 0.4 - 1.96\sqrt{\frac{0.6*0.4}{20}} = 0.1853$

The upper limit of this interval is:

$\pi + z\sqrt{\frac{\pi(1-\pi)}{n}} = 0.4 + 1.96\sqrt{\frac{0.6*0.4}{20}} = 0.6147$

The 95% confidence interval for the true proportion of all teams that had a season winning percentage better than 0.500 is (0.1853, 0.6147).

3 0

4 years ago