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Iteru [2.4K]
3 years ago
8

The function f is defined on the set of real numbers f(x) equals to 4x + 3 find f^-1(x) and hence determine f^-1(½)

Mathematics
1 answer:
SVETLANKA909090 [29]3 years ago
5 0

Answer:

The answer and solution are in the picture above

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Help for most brain! lol
Juliette [100K]

Answer:

Im pretty sure it's false because 7.4p could 74, 148, 222 or 296. so it would be the other way around. It's false.

Step-by-step explanation:

7 0
2 years ago
There are big spenders among University of Alabama football season ticket holders. This data set Roll Tide!! shows the dollar am
Bas_tet [7]

Using the z-distribution, as we have a proportion, the 95% confidence interval is (0.2316, 0.3112).

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

A confidence interval of proportions is given by:

\pi \pm z\sqrt{\frac{\pi(1-\pi)}{n}}

In which:

  • \pi is the sample proportion.
  • z is the critical value.
  • n is the sample size.

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:

n = 479, \pi = \frac{130}{479} = 0.2714

Hence the bounds of the interval are found as follows:

\pi - z\sqrt{\frac{\pi(1-\pi)}{n}} = 0.2714 - 1.96\sqrt{\frac{0.2714(0.7286)}{479}} = 0.2316

\pi + z\sqrt{\frac{\pi(1-\pi)}{n}} = 0.2714 + 1.96\sqrt{\frac{0.2714(0.7286)}{479}} = 0.3112

The 95% confidence interval is (0.2316, 0.3112).

More can be learned about the z-distribution at brainly.com/question/25890103

7 0
2 years ago
Find the y-intercept and x-intercept of the line.<br> -x+4y = 8
salantis [7]

Answer:

x-intercept(s):  ( − 8 , 0 )

y-intercept(s):  ( 0 , 2 )

Step-by-step explanation:

To find the x-intercept, substitute in  0  for  y  and solve for  x . To find the y-intercept, substitute in  0 for  x  and solve for  y.

7 0
3 years ago
An airplane captain must have a minimum of 1500 hours of<br> flying experience. Tom has 715.
MatroZZZ [7]

Answer:

He needs 785 more minutes

Step-by-step explanation:

8 0
2 years ago
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TiliK225 [7]
Whats the question? how many is she buying? or how many can she afford?
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2 years ago
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