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atroni [7]
2 years ago
13

Find the domain (d) range(r) and asymptote (a) of the graph f(x)=5^x+6

Mathematics
1 answer:
Temka [501]2 years ago
7 0

Answer:

D= R

R =(6,∞)

A: y=6

Step-by-step explanation:

We are asked to Find the domain (D ) range(R) and Asymptote (A) of the graph f(x)=5^x+6

Our function f(x)=5^x+6 is an translated function of

f(x)=5^x which is an exponential function. Therefore the basic properties remains the same.

Any exponential function is defined for all values of x and Hence

c

however, The range of exponential functions is always positive from 0 to infinity . however here we have 6 added to out parent exponential function and hence the Range of exponential function is always be

Range = (6,∞)

Asymptote : Asymptote of our parent exponential  function is y = 0, but in our function f(x)=5^x+6 , the asymptote will be y=6

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A person sights a boat from 235 feet above sea-level as shown. If the angle of depression from the man to the boat is 21 , then
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Answer:

B = 612.2 ft

Step-by-step explanation:

Solution:-

- The elevation of person, H = 235 ft

- The angle of depression, θ = 21°

- We will sketch a right angle triangle with Height (H), and Base (B) : the boat's distance to the edge of the cliff and the angle (θ) between B and the direct line of sight distance.

- We will use trigonometric ratios to determine the distance between boat and the edge of the cliff, using tangent function.

                             tan ( θ ) = H / B

                             B = H / tan ( θ )

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                             B = 612.2 ft    

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2 years ago
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You have measured the systolic blood pressure of a random sample of 25 employees of a company located near you. A 95% confidence
Alla [95]

Answer:

122 \leq \mu \leq 138

The 95% confidence interval would be given by (122;138)

And the correct interpretation for this case is:

c. If the procedure were repeated many times, 95% of the resulting confidence intervals would contain the population mean systolic blood pressure.

Step-by-step explanation:

Previous concepts

A confidence interval is "a range of values that’s likely to include a population value with a certain degree of confidence. It is often expressed a % where by a population means lies between an upper and lower interval".  

The margin of error is the range of values below and above the sample statistic in a confidence interval.  

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Solution to the problem

The confidence interval for the mean is given by the following formula:  

\bar X \pm t_{\alpha/2}\frac{s}{\sqrt{n}} (1)  

In order to calculate the critical value t_{\alpha/2} we need to find first the degrees of freedom, given by:  

df=n-1=25-1=24  

Since the Confidence is 0.95 or 95%, the value of \alpha=0.05 and \alpha/2 =0.025, and we can use excel, a calculator or a table to find the critical value. The excel command would be: "=-T.INV(0.025,24)".And we see that t_{\alpha/2}=2.06  

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122 \leq \mu \leq 138

The 95% confidence interval would be given by (122;138)

And the correct interpretation for this case is:

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