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olga55 [171]
2 years ago
14

What is the discriminant of the quadratic equation 0 = -x² + 4x − 2?

Mathematics
1 answer:
max2010maxim [7]2 years ago
3 0

Answer: 8

Step-by-step explanation:

The discriminant is b^2-4ac

in the equation:

-x^2+4x-2

A = -1, B = 4, C = -2

plug into equation

4^2-4(-1)(-2)

16-8

⇒ 8

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Sketch the graph of each rational function showing all the key features. Verify your graph by graphing the function on
leva [86]

Answer:

Rational Function

Step-by-step explanation:

Gives the function:

f(x) = \frac{x-2}{3x-2x^2}

It has the following,

Domain

x∈ \mathbb{R} : x\neq 0, x\neq 3/2

Range

f \in \mathbb{R} : f \leq -1, f \geq -\frac{1}{9}

End behaviour

As xx \rightarrow \infty, y \rightarrow 0

Horizontal and Vertical Asymptote

Vertical x = 0, x=3/2

Horizontal y = 0

<em>x-intercept: (2,0)</em>

<em>y-intercept: none</em>

<em>**The Graph is in the annex</em>

5 0
3 years ago
If h(x) = 6 - X, what is the value of (h.n)(10)?<br> -2<br> 10<br> 16<br> Help pls
Pavlova-9 [17]

Answer:

16

Step-by-step explanation:

h(x) = 6 - X

Let x = -10

h(-10) = 6- -10

        = 6+ 10

        = 16

3 0
3 years ago
Pleaseeeeeeeeeeeeeeeeeeee help
katrin [286]

Answer:

0

Step-by-step explanation:

Well, since the line has the same y coordinates, you know it's a horizontal line.

All slopes of horizontal lines are 0.

4 0
2 years ago
Cassidy wrote the linear equation y=5x+4. Then she wrote the equation of the line that is parallel to y=5x+ and that passes thro
Vera_Pavlovna [14]

Answer:

The value of b is -42

Step-by-step explanation:

Parallel equations have identical or equal slopes. Given the form of the equation; y=5x+b and the point it passes through (8,-2) we determine the unknown value b by substituting x with 8 and y with -2. We solve the equation; -2 =5(8)+b to obtain b = -42

5 0
3 years ago
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Alla [95]

Answer:

Step-by-step explanation:

5 0
3 years ago
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