3 years ago

If the coefficient a in the general quadratic equation is equal to 9, what is the focal length for the

Mathematics

1 answer:

lutik1710 [3]3 years ago

5 0

Answer:

Step-by-step explanation:

Let the equation of a parabola be

$y^{2}$ = 4ax.

Then , focal length of the parabola is a.

As , (0,0) is the vertex and its focus is (a,0)

Thus, focal length comes out to be a.

Here,

a is given as 9 units .

Thus focal length of the parabola, d, equals to 9 units

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Marat540 [252]

The first step is to find the vertex. You do this by using the formula $\frac{-b}{2a}$ .

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You get $5.5$ 

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3 years ago

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4 years ago

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A times a to the 7 power

ivolga24 [154]

Answer:

${a}^{8}$

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