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12345 [234]
3 years ago
15

What are the discontinuity and zero of the function f(x) = quantity x squared plus 6 x plus 8 end quantity over quantity x plus

4
Discontinuity at (4, 6), zero at (−2, 0)

Discontinuity at (4, 6), zero at (2, 0)

Discontinuity at (−4, −2), zero at (−2, 0)

Discontinuity at (−4, −2), zero at (2, 0)
Mathematics
1 answer:
Tcecarenko [31]3 years ago
6 0

Answer:

Discontinuity at (-4,-2), zero at (-2,0).

Step-by-step explanation:

We are given that a function

f(x)=\frac{x^2+6x+8}{x+4}

We have to find the discontinuity and zero of the given function.

Discontinuity: It is that point where the function is not defined.

It makes the function infinite.

f(x)=\frac{x^2+4x+2x+8}{x+4}

f(x)=\frac{(x+4)(x+2)}{x+4}

When x=-4 then

f(-4)=\frac{0}{0} It is indeterminate form

Function is not defined

After cancel out x+4 in numerator and denominator  then we get

f(x)=x+2

Substitute x=-4

f(-4)=-4+2=-2

Therefore, the point of discontinuity is (-4,-2).

Zero: The zero of the function is that number when substitute it in the given function then the function becomes zero.

When substitute x=-2

Then , f(0)=-2+2=0

The function is zero at (-2,0).

Hence, option C is true.

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Given the quadratic equation <img src="https://tex.z-dn.net/?f=y%20%3D%202%28x%20-1%29%5E%7B2%7D%20%2B%208" id="TexFormula1" tit
Sunny_sXe [5.5K]

Answer:

Part 1) "a" value is 2

Part 2) The vertex is the point (1,8)

Part 3) The equation of the axis of symmetry is x=1

Part 4) The vertex is a minimum

Part 5) The quadratic equation in standard form is y=2x^{2}-4x+10

Step-by-step explanation:

we know that

The equation of a vertical parabola into vertex form is equal to

y=a(x-h)^{2}+k

where

(h,k) is the vertex of the parabola

if a > 0 then the parabola open upward (vertex is a minimum)

if a < 0 then the parabola open downward (vertex is a maximum)

The equation of the axis of symmetry of a vertical parabola is equal to the x-coordinate of the vertex

so

x=h

In this problem we have

y=2(x-1)^{2}+8 -----> this is the equation in vertex form of a vertical parabola

The value of a=2

so

a>0 then the parabola open upward (vertex is a minimum)

The vertex is the point (1,8)

so

(h,k)=(1,8)

The equation of the axis of symmetry is x=1

The equation of a vertical parabola in standard form is equal to

y=ax^{2}+bx+c

Convert vertex form in standard form

y=2(x-1)^{2}+8

y=2(x^{2}-2x+1)+8

y=2x^{2}-4x+2+8

y=2x^{2}-4x+10

see the attached figure to better understand the problem

7 0
3 years ago
Solve for X<br><br> 8^3x-10 =4^6x-27<br><br> Thanks in advance!
dlinn [17]

8^{3x-10}=4^{6x-27}\\\\(2^3)^{3x-10}=(2^2)^{6x-27}\qquad\text{use}\ (a^n)^m=a^{nm}\\\\2^{3(3x-10)}=2^{2(6x-27)}\qquad\text{use distributive property}\\\\2^{(3)(3x)+(3)(-10)}=2^{(2)(6x)+(2)(-27)}\\\\2^{9x-30}=2^{12x-54}\iff9x-30=12x-54\qquad\text{add 30 to both sides}\\\\9x=12x-24\qquad\text{subtract 12x from both sides}\\\\-3x=-24\qquad\text{divide both sides by (-3)}\\\\\boxed{x=8}

6 0
3 years ago
Find the distance from point A to the given line<br> A(2,-1), y=-x+4
BARSIC [14]

Answer:

using distance formula you can solve it

8 0
2 years ago
Jillian measured the distance around a small fish pond as 27 yards. Which would be a good estimate for the distance across the p
ankoles [38]
27 (circumference) ➗ 3.14 (pi) = 8.59 (diameter)

Distance across (diameter) would be closest to 9.
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3 years ago
Round to the nearest tenth. Asanji took a trip to Mexico. Upon leaving he decided to convert all of his Pesos back into dollars.
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He would have around 15 dollars 
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Read 2 more answers
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