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iragen [17]
3 years ago
5

Find the inverse of f(x) = 7x - 5.

Mathematics
1 answer:
dimaraw [331]3 years ago
5 0

Answer:

f⁻1(x)=(x/7)+(5/7)

Step-by-step explanation:

To find the inverse, interchange the variables and solve for y.

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Write the following numbers in ascending order (from smallest to largest): 1.2, 3%, 3/5, 0.3, and -1 1/3. ​
SSSSS [86.1K]

Answer:

-1 1/3, 0.3, 1.2, 3/5,  3,  

Step-by-step explanation:

Hope I helped, can I plz have brainliest, ive never gotten one before!

5 0
3 years ago
In the section describing the survey methods, the report states, “For results based on the total sample of national adults, the
Yakvenalex [24]

Answer:

The interpretation of that same problem is listed throughout the section below on explanation.

Step-by-step explanation:

<u>Interpretation:</u>

  • Researchers seem to be confident with 95% that the sample selection standard error seems to be + as well as - 4 percent respectively.
  • This same margin of sampling error would then decrease from either the mean or average value by four percentage points smaller or even larger, it describes the survey method.

So that the above is the right answer.

8 0
3 years ago
Drag and drop the constant of proportionality into the box to match the table.
NemiM [27]

Answer: it is NOT proportional

Step-by-step explanation: it doesn’t stick to 1 number going up if that makes sense, it’s adding 1 each time it goes up but it has to stick to one number going up making this NOT proportional

4 0
3 years ago
Read 2 more answers
Suppose that a market research firm is hired to estimate the percent of adults living in a large city who have cell phones. 500
Alborosie

Answer:

The 95% confidence interval estimate for the true proportion of adults residents of this city who have cell phones is (0.81, 0.874).

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 level of 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:

n = 500, \pi = \frac{421}{500} = 0.842

95% confidence level

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}} = 0.842 - 1.96\sqrt{\frac{0.842*0.158}{500}} = 0.81

The upper limit of this interval is:

\pi + z\sqrt{\frac{\pi(1-\pi)}{n}} = 0.842 + 1.96\sqrt{\frac{0.842*0.158}{500}} = 0.874

The 95% confidence interval estimate for the true proportion of adults residents of this city who have cell phones is (0.81, 0.874).

6 0
4 years ago
Jamar and Peggy live on opposite sides of a park. Peggy counted how many steps it takes her to get from her house to Jamar's hou
creativ13 [48]

Answer:

A.96.25 steps.  B. Approximately 37 steps shorter

Step-by-step explanation:

From Pythagoras theory,

Hyp² = Adj² + Opp²

Hyp² = 52² + 81²

Hyp² = 2704 + 6561

Hyp² = 9265

Hyp = √9265

Hyp = 96.25 steps

= 81 + 52 = 133 - 96.25

= 36.75 or approximately 37 steps shorter

7 0
3 years ago
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