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Lana71 [14]
3 years ago
11

The rational function has a y-intercept of 7. What is the equation for this function?

Mathematics
1 answer:
Schach [20]3 years ago
0 0

Answer:

\large\boxed{f(x)=\dfrac{4}{x+2}+5}

Step-by-step explanation:

f(x)=\dfrac{a}{x-b}+c\\\\\text{We have}\\\text{(1) the vertical asymptote}\ x=-2.\ \text{Therefore}\ b=-2.\\\text{(2) the horizontal asymptote}\ y=5.\ \text{Therefore}\ c=5.\\\text{(3) the point (0, 7). Put the coordinates of the point to the equation}\\\text{of the function}\\y=\dfrac{a}{x-(-2)}+5\\\\7=\dfrac{a}{0+2}+5\qquad\text{subtract 5 from both sides}\\\\2=\dfrac{a}{2}\qquad\text{multiply both sides by 2}\\\\4=a\to a=4\\\\\text{Finally:}\\\\f(x)=\dfrac{4}{x+2}+5

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14 points for help plz
zepelin [54]

We can divide the above figure into two rectangles MNSR and OPQS.

The dimension of rectangle MNSR is 3 x 4 (Since, MR = 3 and MN = 4).

So, area of rectangle MNSR = 3* 4 = 12 square units.

Similarly dimension of rectangle OPQS is 3 x 1 because

PQ = MR - NO = 3 - 2 = 1

SQ = RQ - MN = 7 - 4 = 3.

So, area of OPQS = 3* 1 = 3 square units.

Hence, the area of polygon MNOPQR = Area of rectangle MNSR that is 12 square units + Area of rectangle OPQS that is 3 square units.

= 12 + 3

= 15 square units.

Hope this helps you!

3 0
3 years ago
Olivia is painting a logo for a billboard and wants to use a combination of blue paint and red paint to completely cover a 5000
My name is Ann [436]

Answer:

($20/gal)r + ($30/gal)b ≤ $250

r + b ≤ 10 (gallons)

Step-by-step explanation:

Represent the amount of red paint by r and that of blue point by b.

Olivia must cover 5000 ft^2 with paint, which comes out to 5000/500, or 10, gallons total of red and blue paint.  The corresponding inequality is

r + b ≤ 10 (gallons)

She has onlyl $250 to spend.  Therefore, the following must hold true:

($20/gal)r + ($30/gal)b ≤ $250

The required sysstem of inequalities is thus

($20/gal)r + ($30/gal)b ≤ $250

r + b ≤ 10 (gallons)

5 0
3 years ago
Which quadrant does the terminal side of angle -190° lie?
Luda [366]

Answer:

Quadrant lll

Step-by-step explanation:

Since the cosine of the angle is positive, the sine of the angle must be negative and the terminal side of the angle lies in either Quadrant III or IV.

8 0
3 years ago
28 students in the class took an algebra test. If 12 students pass the test what percent failed
BabaBlast [244]

Answer:

57% of the class failed the test.

Step-by-step explanation:

28 - 12 = 16

16/28 = 0.57142857142 ≈ 0.57

Thus, 57% of the class failed the test.

5 0
3 years ago
(Subtract<br> ) f(x) = x + 1<br> g(x) = x2 + 1
kramer

Answer:

The first question:

x = -1

Step-by-step explanation:

Step  1  :

Pulling out like terms :

1.1     Pull out like factors :

  -x - 1  =   -1 • (x + 1)

Equation at the end of step  1  :

Step  2  :

Solving a Single Variable Equation :

2.1      Solve  :    -x-1 = 0

Add  1  to both sides of the equation :

                     -x = 1

Multiply both sides of the equation by (-1) :  x = -1

One solution was found :

                  x = -1

Processing ends successfully

plz mark me as brainliest :)

7 0
3 years ago
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