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2 years ago

3x²-9x+1+0 Find the discriminant

Mathematics

1 answer:

Sindrei [870]2 years ago

3 0

Answer:

$\boxed{D = 69}$

Step-by-step explanation:

The given quadratic equation is:

$3x^2-9x+1 = 0$

Comparing it with the standard form of Quadratic Equation $ax^2+bx+c = 0$ , we get:

a = 3, b = -9 and c = 1

Discriminant = b² - 4ac

D = (-9)²-4(3)(1)

D = 81 - 12

D = 69

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Line Equation from Two Points

Verdich [7]

Hi!

We can use point-slope form to solve this.

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First, we have to find $m$ , the slope. We can use the slope equation to get this.

$\frac{y_{1} -y_{2} }{x_{1} -x_{2} }$

Plug in your points:

$\frac{4-0}{8-(-8)} =\frac{4-0}{8+8} =\frac{4}{16} =\frac{1}{4}$

Your slope is $\frac{1}{4}$

Now plug points and slope into point-slope equation. We will use (8, 4).

$y-4=\frac{1}{4} (x-8)$

Now, if you want to get it into y = mx + b form, you have to solve for y:

$y-4=\frac{1}{4} (x-8)$

$y-4=\frac{1}{4} x-2$

$y=\frac{1}{4} +2$

Your equation is $y=\frac{1}{4} +2$

For more information on how to get the equation of a line when given two points, see here:

brainly.com/question/986503

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1 year ago

George used the diagram below to help determine 30% of 60. Which expression could George have used?

VARVARA [1.3K]

Answer:

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Step-by-step explanation:

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2nd. Find the option that equals 18 which was (3)(6)

Basically, for all of questions that ask for a different way to express it, multiply the total amount by the percentage(or decimal/fraction) and find the other expression with the same answer.

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2 years ago

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prisoha [69]

Answer:

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Step-by-step explanation:

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2 years ago

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neonofarm [45]

Answer:

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Step-by-step explanation:

3(n+7)=48

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2 years ago

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Answer:

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