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2 years ago

What's the conversion factor used to convert inches to yards?

Mathematics

1 answer:

yaroslaw [1]2 years ago

7 0

Answer:

Option A is the correct answer

Step-by-step explanation:

We know that

1 yard = 3 foot

1 foot = 12 inch

1 yard = $3\times12$ inches

$=36$ inches

Option A is the correct answer

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Bob is training for a race,Bob ran 14.6 miles away from his home,then Bob ran9.8miles toward his home, finally Bob ran 5.3miles

miss Akunina [59]

14.6-9.8+5.3=<span>10.1 miles</span>

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3 years ago

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6.1712 rounded to the nearest tenth

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Answer:

6.2

Step-by-step explanation:

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3 years ago

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Help?<br><br> 3. Three times a number is two times the difference of that number and one.

erastovalidia [21]

Answer:

3x = 2(-3x + 1)

Step-by-step explanation:

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3 years ago

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A baseball bat costs $41. This is $9 more than four times the wholesale cost of the bat.Find the bat's wholesale cost.

Lostsunrise [7]

We can find the bat's wholesale cost by working backwards -

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2 years ago

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A public health official is planning for the supplyof influenza vaccine needed for the upcoming flu season. She wants to estimat

Marizza181 [45]

Answer:

$n=\frac{0.5(1-0.5)}{(\frac{0.04}{1.64})^2}=420.25$

And rounded up we have that n=421

Step-by-step explanation:

We know that the sample proportion have the following distribution:

$\hat p \sim N(p,\sqrt{\frac{p(1-p)}{n}})$

In order to find the critical value we need to take in count that we are finding the interval for a proportion, so on this case we need to use the z distribution. Since our interval is at 90% of confidence, our significance level would be given by $\alpha=1-0.90=0.1$ and $\alpha/2 =0.05$ . And the critical value would be given by:

$z_{\alpha/2}=-1.64, z_{1-\alpha/2}=1.64$

The margin of error for the proportion interval is given by this formula:

$ME=z_{\alpha/2}\sqrt{\frac{\hat p (1-\hat p)}{n}}$ (a)

And on this case we have that $ME =\pm 0.04$ and we are interested in order to find the value of n, if we solve n from equation (a) we got:

$n=\frac{\hat p (1-\hat p)}{(\frac{ME}{z})^2}$ (b)

We assume that a prior estimation for p would be $\hat p =0.5$ since we don't have any other info provided. And replacing into equation (b) the values from part a we got:

$n=\frac{0.5(1-0.5)}{(\frac{0.04}{1.64})^2}=420.25$

And rounded up we have that n=421

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3 years ago