3 years ago

What is the measure of the missing angle?

1 answer:

3 0

We know, sum of all the angles in a triangle is 180
So, x + 28 + 66 = 180
x + 94 = 180
x = 180 - 94
x = 86

In short, Your Answer would be Option A

Hope this helps!

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