3 years ago

Find 20% if 45 using a model.

1 answer:

4 0

I don't really know what the question was, but I am guessing that it is 20% times 45. The answer I got was 9. I hope this helps, sorry if not. c;

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Answer:

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Step-by-step explanation:

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3 years ago

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2 years ago

Find the equation of the axis of symmetry and the coordinates of vertex of the functions =2x^2+4x-3

SVEN [57.7K]

Hello,

Find the equation of the axis of symmetry is like find the maximum or minimum point of this function.

$f(x)=2x^2+4x-3\\\\\alpha=-\dfrac{b}{2a}=-\dfrac{4}{4}=-1\\\\$

The equation of the axis of symmetry is then : $x=-1$

$\beta=f(\alpha)=2(-1)^2+4(-1)-3=2-4-3=-5$

Coordinates of vertex : $(\alpha,\beta)=(-1;-5)$