2 years ago

If the discriminant of a quadratic equation is equal to Negative 8, which statement describes the roots?

Mathematics

1 answer:

Charra [1.4K]2 years ago

7 0

Answer:

There are two complex roots

Step-by-step explanation:

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What is x + 15 > 3?

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Step-by-step explanation:

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3 years ago

How do I calculate this? Is there a formula?

alex41 [277]

Answer:

Height of cables = 23.75 meters

Step-by-step explanation:

We are given that the road is suspended from twin towers whose cables are parabolic in shape.

For this situation, imagine a graph where the x-axis represent the road surface and the point (0,0) represents the point that is on the road surface midway between the two towers.

Then draw a parabola having vertex at (0,0) and curving upwards on either side of the vertex at a distance of $x = 600$ or $x = -600$ , and y at 95.

We know that the equation of a parabola is in the form $y=ax^2$ and here it passes through the point $(600, 95)$ .

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$a=\frac{95}{360000}$

$a=\frac{19}{72000}$

So new equation for parabola would be $y=\frac{19x^2}{72000}$ .

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Answer:

Step-by-step explanation:

6y+1= -y+15

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