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skelet666 [1.2K]
3 years ago
7

Pls help with asap thxxu! :)

Mathematics
2 answers:
Neporo4naja [7]3 years ago
8 0

Answer:

C- Equilateral Triangle

Step-by-step explanation:

The compass marks all point equidistant from a common center. Where the arc centered on B and including A intersects the arc centered on A and including B, the three points A, B and the intersection have identical distances between any pair of the three points. A triangle with equal sides is called equilateral.

Stella [2.4K]3 years ago
7 0

Answer:

C- Equilateral triangle

Step-by-step explanation:

I am not very sure dear

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a) axis of symmetry: <em> </em><em>x</em> = <em>h</em>

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Step-by-step explanation:

<em><u>Note:</u></em><em> </em>This post will only provide the answers for parts a through d, in accordance with Brainly's Guidelines.

Given the quadratic equation, y = – 2x² + 12x - 7, where a = -2, b = 12, and c = -7:

<h3>  </h3><h3>a) What is equation of the axis of symmetry?</h3>

The <u>axis of symmetry</u> is an imaginary line that divides the graph of a parabola into two symmetrical parts.  The axis of symmetry goes through the x-coordinate of the vertex, (<em>h</em>, k). Hence, the axis of symmetry is often represented by the following equation: x = h.  

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\displaystyle\mathsf{x\:=\:\frac{-b}{2a}}

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\displaystyle\mathsf{x\:=\:\frac{-(12)}{2(-2)}\:=\:\frac{-12}{-4}\:=\:3}

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y = – 2(3)² + 12(3) – 7

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Therefore, the <u>vertex</u> of the given quadratic equation is (3, 11).

<h3 /><h3>c/d) Does the equation have a maximum or minimum? What is the maximum/minimum?</h3>

The value of the "<em>a</em>" coefficient in the quadratic equation, y = <u>a</u>x² + bx + c, determines whether a given parabola has either a minimum, or a maximum.

  • If <em>a</em> > 1, then it means that the graph of a parabola opens <u>upward</u>, and the vertex is its <u><em>minimum</em></u> point.
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Since the value of our given quadratic equation is a = -2, then it means that its graph opens <em>downward</em>, and that the <u>vertex is its maximum point</u>.  

Attached is a screenshot of the graph, where it shows the vertex occurring at point (3, 11), for which the axis of symmetry goes through at x = 3.

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