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____ [38]
3 years ago
15

A student was given the equation x^2+2x-16=0 to solve by completing the square. The first step that was written is shown below.

——> X^2 + 2x=16<—— The next step in the student’s process was x^2 +2x+c =16+c. State the value of c that creates a perfect square trinomial.
Mathematics
1 answer:
AlexFokin [52]3 years ago
7 0

Answer:

x_{1}=-1+\sqrt{17},\:x_{2}=-1-\sqrt{17}

Step-by-step explanation:

Quadratic Equation Given:

x^2+2x-16=0

x^2 + 2x=16

$c=\left( \frac{b}{2} \right)^2 $

x^2 + 2x+1=16+1

(x+1)^2=17\\

x+1=\pm \sqrt{17} \\

x=-1 \pm \sqrt{17} \\

x_{1}=-1+\sqrt{17},\:x_{2}=-1-\sqrt{17}

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lana66690 [7]

The true statement is that: plotting the relationship between the variables in a Logistic Regression will form a Sigmoid Curve.

<h3>How to determine the line of a Logistic Regression </h3>

A Logistic Regression is a nonlinear function, that has the following properties

  1. The absence of multicollinearity
  2. No influential outliers
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Base on the above highlights, we can conclude that the variables form a Sigmoid Curve.

Read more about Logistic Regression at:

brainly.com/question/21344316

6 0
2 years ago
Write the slope-intercept form of the equation that passes through the point (4, -2) and is perpendicular to the line y =4x - 1
ExtremeBDS [4]

Answer:

<h2>         y = -¹/₄x - 1</h2>

Step-by-step explanation:

If two lines are perpendicular then the product of theirs slopes is equal -1:

y=m₁x+b₁   ⊥   y=m₂x+b₂   ⇒    m₁×m₂ = -1

y = 4x - 2   ⇒   m₁=4

4×m₂ = -1        ⇒    m₂ = -¹/₄

The line y=-¹/₄x+b passes through point (4, -2) so the equation:

-2 = -¹/₄×4 + b must be true

-2 = -1 + b

b = -1

Therefore equation in  slope-intercept form:

                                                y = -¹/₄x - 1

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What value of m makes this a true number sentence? <br><br> m+3+m=3
MrRa [10]
The correct value for m is 0(zero). :)
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Please can someone help me, thank u
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Answer:

Step-by-step explanation:

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Please help me!
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Answer:

1B

2A

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