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3 years ago

Please help me :). I'll give brainiest

Mathematics

1 answer:

Dennis_Churaev [7]3 years ago

4 0

Answer:

axis of symmetry: $x=3$ , vertex: $(3,23)$

Step-by-step explanation:

$-\frac{b}{2a}=-\frac{12}{-4}=3$

axis of symmetry(x-value of the vertex): $x=3$

input this value into the function to get the vertex

$-2(3)^{2}+12(3)+5$

$-18+36+5$

$18+5$

$23$ is the y-value of the vertex

$(3,23)$

plz mark me brainliest. :)

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I have attached an image of the triangle.

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Step-by-step explanation:

In the attached triangle, we see that;

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