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2 years ago

Plz help dicriminant of 3x^2-4x+2

Mathematics

2 answers:

Zinaida [17]2 years ago

7 0

Answer: it's -8

Step-by-step explanation: use the values of a, b, and c to find the discriminant. give me brainliestt

Airida [17]2 years ago

6 0

Answer: D = -8

Step-by-step explanation:

Ohh okk so the discriminant basically helps find the number of solutions to a quadratic equation

If D(discriminant) is:

< 0 there are no solutions

= 0 there is one solution

> 0 there are two solutions

The discriminant is found using

b^2 - 4ac

Here a = 3

b = -4

c = 2

(-4)^2 - 4(3)(2)

16 - 24

-8

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Which expression is equivalent to 5(w+4) when w=9

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Answer: Should be 5(9)+4

Step-by-step explanation:

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2 years ago

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Use the long division method to find the result when 12x^3+25x^2+4x-112x

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(4x + 3) • (x + 2) • (3x - 2)

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2 years ago

The sketch shows two parallel lines cut by a transversal. Which pair of angles are alternate interior angles?

Likurg_2 [28]

Answer:

B) Angle 5 and angle 4

Step-by-step explanation:

Given

See attachment for sketch

See comment for options

Required

The alternate interior angles

Interior angles are such that they are located between the given parallel lines.

In the attached sketch, the interior angles are: 3, 4, 5 and 6

Alternate angles are at the opposite sides of the transversal

Hence:

4 and 5 are alternate interior

3 and 5 are also alternate interior

5 0

3 years ago

Please help me out asap! Giving brainliest

irina [24]

The Answer is 3^6

Just for characters

8 0

2 years ago

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Please help very urgent

Alik [6]

Answer:

32, 16, 8, 4, 2, 1

Explanation:

The geometric mean can be represented by $\sqrt[n]{x_{1} • x_{2} • x_{3} • .. x_{n}}$ .

Which is the mean of the product of n numbers, used to find the average of a geometric progression.

Don't get confused by geometric mean, it is only asking you about the next numbers in the geometric sequence given the first and sixth term.

The explicit rule for a geometric sequence can be modeled by:

$a_{n} = a_{1} • r^{n-1}$

Where $a_{n}$ is the nth term, $a_{1}$ is the first term in the sequence, n is the term number, and r is the common ratio.

Since we already know the first term, $a_{1}$ will simply be 32.

Since we know it's geometric, there will be an exponential relationship, which means that we will use the geometric mean to find the common ratio.

There are 6 total terms, r is raised to the n – 1 so 6 – 1 = 5, and that will be the degree of this root.

$\sqrt[5]{\frac{a_{6}}{a_{1}}}$ =

$\sqrt[5]{\frac{1}{32}}$ =

$\frac{1}{2}$ .

Therefore: $r = \frac{1}{2}$ .

Using all the information we have, we can find the explicit rule:

$a_{n} = a_{1} • r^{n-1}$

$a_{1}$ = 32
$r = \frac{1}{2}$

$a_{n} = a_{1} • r^{n-1}$ →

$\boxed{a_{n} = 32 • (\frac{1}{2})^{n-1}}$

________________________________

We can test that this works by substituting the number location of the term you want to find.

For instance:

$a_{1} = 32 • (\frac{1}{2})^{1-1}$

$a_{1} = 32 • (\frac{1}{2})^{0}$

$a_{1} = 32 • 1$

$a_{1} = 32$

$a_{6} = 32 • (\frac{1}{2})^{6-1}$

$a_{6} = 32 • (\frac{1}{2})^{5}$

$a_{6} = 32 • \frac{1}{32}$

$a_{6} = 1$

3 0

2 years ago

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