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3 years ago

Apparently the answer is -2. How do they get that?

Mathematics

1 answer:

jasenka [17]3 years ago

8 0

H(x) is just a transformation of f(x).

The transformation is the '2x-3' inside of function 'f'.

Let x = 4, Then 2x-3 = 2(4) - 3 = 5.

This means that h(4) = f(5)

Use the given table to find f(5).

f(5) = -2

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Answer: a and c

Step-by-step explanation:

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1 year ago

Express the confidence interval

marissa [1.9K]

Answer:

$\hat p = \frac{0.244+0.326}{2}=0.285$

$ME = \frac{0.326-0.244}{2}=0.041$

$0.285 \pm 0.041$

Step-by-step explanation:

For this case we have a confidence interval given as a percent:

$24.4\% \leq p \leq 32.6\%$

If we express this in terms of fraction we have this:

$0.244 \leq p \leq 0.326$

We know that the confidence interval for the true proportion is given by:

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

And thats equivalent to:

$\hat p \pm ME$

We can estimate the estimated proportion like this:

$\hat p = \frac{0.244+0.326}{2}=0.285$

And the margin of error can be estimaed using the fact that the confidence interval is symmetrical

$ME = \frac{0.326-0.244}{2}=0.041$

And then the confidence interval in the form desired is:

$0.285 \pm 0.041$

7 0

3 years ago

Find the slope of the line that is perpendicular to the joining line P (2,-3) and Q (-3,-2)

azamat

m =(y2-y1)/(x2-x1)

m =(-2 + 3 )/(-3 -2)

m = 1/-5

m = -1/5

slope of the line that is perpendicular = 5

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3 years ago

Find three fractions whose product is -5/24.

mariarad [96]

Answer:

Below.

Step-by-step explanation:

-5/8 * 1/3 = -5/24

-5/12 * 1/2 = -5/24

-5/6 * 1/4 = -5/24.

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2 years ago

How do I solve 4[2.5 + 3 (20 + 7)] ?

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$4[2.5+3(20+7)]=4[2.5+3 \cdot 27]=4[2.5+81]=4 \cdot 83.5=334$

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3 years ago

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