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Andrews [41]
3 years ago
11

1. State the domain of the rational function. (2 points)

Mathematics
2 answers:
Nookie1986 [14]3 years ago
5 0
1. Considering <span>f(x) = </span>\frac{13}{10-x}
c) All real numbers except 10
Compare the denominator to zero and it will give you the point where there is no f(x) because it is impossible to divide anything by 0.
10-x=0 ⇔ x=10
The function has a domain containing all real numbers except 10 → x<10 or x<10.

2. Considering f(x)=\frac{(x-6)(x+6)}{x^{2}-9 }
b) x = 3, x = -3
Once more, compare the denominator to zero and it will give you the point/points where there is no f(x) because it is impossible to divide anything by 0, and there is where you can find the vertical asymptotes. 
x²-9=0 ⇔ x=-3, x=3
The vertical asymptotes are x=3 and x=-3.

3. Considering \frac{x^{2}+4x-7}{x-7}
<span>a) None (of those presented)
</span>Apply long division on the function. <span>
The horizontal asymptote is y=x+11.

4. Considering </span>\frac{x^{2}+8x-2}{x-2}
<span>a) None (of those presented)
Once more, a</span>pply long division on the function.
<span>The horizontal asymptote is y=x+10.

5. </span>The polynomial in the numerator has to have a smaller degree than the polynomial in the denominator. The polynomial in the denominator needs to have factors of x-1 and x-2. This factors should not be part of the polynomial in the numerator. An example of such a function could be: f(x)=\frac{8x-2}{ x^{2} -3x+2}
slega [8]3 years ago
3 0
1)      The domain is every value of x for which f(x) is a real number.

f(x) = 13 / (10-x)
The only x value that would not produce a real number for f(x) is 10, since you cannot divide a number by zero. Answer is C

2)      F(x) =(x-6)(x+6)/(x2  - 9)
The vertical asymptotes are x=3 and x=-3. Graph the function on a graphing calculator to observe the behavior of the function at these points. There is both a positive and negative vertical asymptote a both x=3 and x=-3. Keep in mind that the denominator approaches zero at these points, and thus f(x) approaches either positive or negative infinite, depending on whether the denominator, however small, is a positive or negative number. Answer is B) 3, -3

3)      F(x) = (x2 + 4x-7) / (x-7)
Although there is a vertical asymptote as x=7, there is no horizontal asymptote. This makes sense. As X gets bigger, there is nothing to hold y back from getting greater and greater. X2 is the dominant term, and it’s only in the numerator. A) none

4)      (x2 + 8x -2) / (x-2)
This function is very similar in structure to the previous one. Same rules apply. Dominant term only in the numerator means no horizontal asymptote. A)None

5)      Our function approaches 0 as x approaches infinite, and has a vertical asymptote at x=2 and x=1.
Here’s an easy example: 10 / ((x-2)*(x-1)). At x=2 and x=1, there is both a positive and negative vertical asymptote. As x approaches infinite, the numerator is dominated by the denominator, which contains x (actually x2 ), and thus y approaches zero.  

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when n basketball uniforms are purchased , the cost , C , of each uniforms is given by the equation C=40n+260/n. if the cost of
Luda [366]

Hello!

As you can see, C is the cost of each uniform. This would give us the equation below, if each uniform was $60.

60=40n+260/n

Let's multiply both sides by n.

60n=40n+260

Now, let's subtract 40n from both sides.

20n=260

We divide both sides by 20.

n=13

Therefore, 13 uniforms were purchased.

I hope this helps!

7 0
3 years ago
Read 2 more answers
What measure of center best represents the data set? Drag and drop the correct answer into the box. Data Set Best Measure of Cen
ella [17]

The measure of center best represents the data set is Mean or Median.

Given

Data Set Best Measure of Center {27, 29, 26, 28, 25}.

<h3>What is the mean of the data set? </h3>

The mean is the average of a set of data.

The mean is found by finding the sum of the data and then dividing the sum by the number of data.

<h3 />

The mean of the given data set is;

\rm Mean = \dfrac{27+29+26+28+25}{5}\\\\Mean =\dfrac{135}{5}\\\\Mean =27

Arranging the data set in the ascending order

{25, 26, 27, 28, 29}

The median is defined as the middle value of the given data set.

The median of the data set is 27.

Hence, the measure of center best represents the data set is Mean or Median.

To know more about mean and median click the link is given below.

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8 0
2 years ago
Complete the square to solve the equation below.
sasho [114]
Hello there!

x² + x = 7/4
x² + - 7/4 = 0

Now we gonna use the quadratic formula to find x
a= 1
b=1
c = -1.75

x = -b+/-√b² -4ac all of them divide by 2a
x = -(1)+/-√(1)² - (4)(1)(-1.75) all of them divide by 2(1)
x= -1+/-√8 all of them divide by 2
x = -1/2 + √2 or x = -1/2 - √2

The correct option is option C

I hope that helps!
4 0
3 years ago
Raymond has taken a position as the navigator on a speed boat racing team. The team entered a race that starts at Daytona Beach,
erik [133]
Using the rules of cosines, the <span>measure of the turn between the second and third legs of the race</span> is given by

\cos^{-1}\left( \frac{180^2+160^2-140^2}{2\times180\times160} \right)=\cos^{-1}\left( \frac{32,400+26,600-19,600}{57,600} \right) \\  \\ =\cos^{-1}\left( \frac{39,400}{57,600} \right)=\cos^{-1}(0.6840)\approx47^o
4 0
3 years ago
Read 2 more answers
Questions 1-6 please
MakcuM [25]
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question 4 is 8 \sqrt{3}
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6 0
3 years ago
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