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andriy [413]
3 years ago
10

Someone help me Asap please!!

Mathematics
2 answers:
natka813 [3]3 years ago
6 0

Answer:

4 tenths is perfect answer.

I am sure of my answer.

Step-by-step explanation:

Alina [70]3 years ago
3 0

Answer:

4 tenths is perfect answer.

I am sure of my answer.

<h3><u>PLEASE</u><u> MARK</u><u> ME</u><u> BRAINLIEST</u><u>.</u></h3>
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Let f be the function defined by f(x)=cx−5x^2/2x^2+ax+b, where a, b, and c are constants. The graph of f has a vertical asymptot
Musya8 [376]

Answer:

a) a = 2 and b = -4, b) c = -10, c) f(-2) = -\frac{5}{3}, d) y =  -\frac{5}{2}.

Step-by-step explanation:

a) After we read the statement carefully, we find that rational-polyomic function has the following characteristics:

1) A root of the polynomial at numerator is -2. (Removable discontinuity)

2) Roots of the polynomial at denominator are 1 and -2, respectively. (Vertical asymptote and removable discontinuity.

We analyze each polynomial by factorization and direct comparison to determine the values of a, b and c.

Denominator

i) (x+2)\cdot (x-1) = 0 Given

ii) x^{2} + x-2 = 0 Factorization

iii) 2\cdot x^{2}+2\cdot x -4 = 0 Compatibility with multiplication/Cancellative Property/Result

After a quick comparison, we conclude that a = 2 and b = -4

b) The numerator is analyzed by applying the same approached of the previous item:

Numerator

i) c\cdot x - 5\cdot x^{2} = 0 Given

ii) x \cdot (c-5\cdot x) = 0 Distributive Property

iii) (-5\cdot x)\cdot \left(x-\frac{c}{5}\right)=0 Distributive and Associative Properties/(-a)\cdot b = -a\cdot b/Result

As we know, this polynomial has x = -2 as one of its roots and therefore, the following identity must be met:

i) \left(x -\frac{c}{5}\right) = (x+2) Given

ii) \frac{c}{5} = -2 Compatibility with addition/Modulative property/Existence of additive inverse.

iii) c = -10 Definition of division/Existence of multiplicative inverse/Compatibility with multiplication/Modulative property/Result

The value of c is -10.

c) We can rewrite the rational function as:

f(x) = \frac{(-5\cdot x)\cdot \left(x+2 \right)}{2\cdot (x+2)\cdot (x-1)}

After eliminating the removable discontinuity, the function becomes:

f(x) = -\frac{5}{2}\cdot \left(\frac{x}{x-1}\right)

At x = -2, we find that f(-2) is:

f(-2) = -\frac{5}{2}\cdot \left[\frac{(-2)}{(-2)-1} \right]

f(-2) = -\frac{5}{3}

d) The value of the horizontal asympote is equal to the limit of the rational function tending toward \pm \infty. That is:

y =  \lim_{x \to \pm\infty} \frac{-10\cdot x-5\cdot x^{2}}{2\cdot x^{2}+2\cdot x -4} Given

y =  \lim_{x \to \infty} \left[\left(\frac{-10\cdot x-5\cdot x^{2}}{2\cdot x^{2}+2\cdot x-4}\right)\cdot 1\right] Modulative Property

y =  \lim_{x \to \infty} \left[\left(\frac{-10\cdot x-5\cdot x^{2}}{2\cdot x^{2}+2\cdot x-4}\right)\cdot \left(\frac{x^{2}}{x^{2}} \right)\right] Existence of Multiplicative Inverse/Definition of Division

y =  \lim_{x \to \pm \infty} \left(\frac{\frac{-10\cdot x-5\cdot x^{2}}{x^{2}} }{\frac{2\cdot x^{2}+2\cdot x -4}{x^{2}} } \right)   \frac{\frac{x}{y} }{\frac{w}{z} } = \frac{x\cdot z}{y\cdot w}

y =  \lim_{x \to \pm \infty} \left(\frac{-\frac{10}{x}-5 }{2+\frac{2}{x}-\frac{4}{x^{2}}  } \right)   \frac{x}{y} + \frac{z}{y} = \frac{x+z}{y}/x^{m}\cdot x^{n} = x^{m+n}

y =  -\frac{5}{2} Limit properties/\lim_{x \to \pm \infty} \frac{1}{x^{n}}  = 0, for n \geq 1

The horizontal asymptote to the graph of f is y =  -\frac{5}{2}.

4 0
3 years ago
Find the midpoint of the line segment with the endpoints (-6, -8) and (-2, -6)
aivan3 [116]
Answer:
(-4,-7)

Explanation:
6 0
2 years ago
If 2/3 X ? = 1 what number goes in the box
Tatiana [17]

Answer:1/3?

Step-by-step explanation: sorry I don’t wanna take ur points just be more specific in the comments pls

7 0
2 years ago
Rhombus J K L M is shown. The length of J K is 2 x + 4 and the length of J M is 3 x.
Dominik [7]

Answer:

12 units

Step-by-step explanation:

Properties of Rhombus:

1. length of all sides are equal.

2. Diagonals bisect each other at right angles

As the length of all sides are equal,

JM = JK

3x = 2x + 4

Subtract 2x from both sides,

3x - 2x = 4

       x = 4

JM = 3*4 = 12 units

5 0
2 years ago
PLEASE HELP!!! thank you :)
IRINA_888 [86]

Answer:

(0,20) (16,8) (8,4) so A

Step-by-step explanation:

By default it is dilating centered at the origin because not specified. Therefore you just multiply every coordinate by the scale factor, in this case 2. Hope this helped!

6 0
2 years ago
Read 2 more answers
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