3 years ago

1.what is the vertex of the graph? (see attachment)

Mathematics

2 answers:

AfilCa [17]3 years ago

5 0

Hello :
here is a solution :

Sergio039 [100]3 years ago

5 0

1. C. (1,3)
2. A. maximum
3. A. 3
4. C. 42 feet
5. D. 11,-11
6. C. -7,-1
7. C. -6,4
8. A. 3.33 ft

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Question:

Tamiku [17]

Answer:

Step-by-step explanation:

$3x^2 + 12x + 6 = 0\\\\a=3\,,\ b=12\,,\ c=6\\\\\\ x=\dfrac{-b\pm\sqrt{b^2-4ac}}{2a}\\\\ x=\dfrac{-12\pm\sqrt{12^2-4\cdot3\cdot6}}{2\cdot3}=\dfrac{-12\pm\sqrt{144-72}}{2\cdot3}=\dfrac{-12\pm\sqrt{72}}{2\cdot3}=\dfrac{-12\pm6\sqrt{2}}{6}\\\\x_1=\dfrac{6(-2+\sqrt{2})}{6}=-2+\sqrt2\\\\x_2=\dfrac{6(-2-\sqrt{2})}{6}=-2-\sqrt2$