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muminat
2 years ago
13

What is the inverse of the function f(x) = x - 12?

Mathematics
1 answer:
ludmilkaskok [199]2 years ago
7 0

Answer: \displaystyle f(x)^{-1}=x+12

Step-by-step explanation:

     First, we will rewrite the function in terms of <em>y</em> as in y = x - 12.

     Second, we will swap the x and y values.

y = x - 12

x = y - 12

     Third, we will solve for y. In other words, we will isolate the <em>y</em> variable and get it "by itself" on one side of the equal sign.

x = y - 12

x + 12 = y

y = x + 12

      Lastly, we will change y back into terms of the function, but the inverse.

\displaystyle f(x)^{-1}=x+12

<em>Learn more about the </em><em>inverse of a function</em><em> here:</em>

<em>brainly.com/question/940569</em>

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<h3>What is a confidence interval of proportions?</h3>

A confidence interval of proportions is given by:

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In which:

  • \pi is the sample proportion.
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In this problem, we have a 95% confidence level, hence\alpha = 0.95, z is the value of Z that has a p-value of \frac{1+0.95}{2} = 0.975, so the critical value is z = 1.96.

We also consider that 130 out of the 479 season ticket holders spent $1000 or more at the previous two home football games, hence:

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Hence the bounds of the interval are found as follows:

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2 years ago
F(x)=2x-4. F(x)=2x-4 f-1x=_x+_. Complete the inverse function
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Answer:

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Step-by-step explanation:

Given

f(x) = 2x - 4

Required

Determine the inverse function

Start by replacing f(x) with y

y = 2x - 4

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Make y the subject: <em>Add 4 to both sides</em>

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x+4 = 2y

Make y the subject: <em>Divide through by 2</em>

<em></em>\frac{1}{2}(x + 4) = y<em></em>

<em></em>y = \frac{1}{2}(x + 4)<em></em>

<em></em>

Replace y with f-1(x)

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Step-by-step explanation:

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