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3 years ago

EMERGENCY HELP IS THIS CORRECT way

Mathematics

2 answers:

blondinia [14]3 years ago

8 0

Step-by-step explanation:

goodjob so correct

maria [59]3 years ago

6 0

Answer:

for number 3, it is D, not C and you are correct for 4

Step-by-step explanation:

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The ranger of the function x2+2x-8is allá

allsm [11]

Answer:

$\mathrm{Range\:of\:}x^2+2x-8:\quad \begin{bmatrix}\mathrm{Solution:}\:&\:f\left(x\right)\ge \:-9\:\\ \:\mathrm{Interval\:Notation:}&\:[-9,\:\infty \:)\end{bmatrix}$

Step-by-step explanation:

As the function is

$x^{2} +2x-8$

As we know that domain is the set of input values for which the function is defined.

Therefore,

$\mathrm{Domain\:of\:}\:x^2+2x-8\::\quad \begin{bmatrix}\mathrm{Solution:}\:&\:-\infty \:$

And range is defined as:

The set of the dependent variable for which the function is defined.

$\mathrm{For\:a\:parabola}\:ax^2+bx+c\:\mathrm{with\:Vertex}\:\left(x_v,\:y_v\right)$

$\mathrm{If}\:a$

$\mathrm{If}\:a>0\:\mathrm{the\:range\:is}\:f\left(x\right)\ge \:y_v$

$a=1,\:\mathrm{Vertex}\:\left(x_v,\:y_v\right)=\left(-1,\:-9\right)$

$f\left(x\right)\ge \:-9$

Therefore,

$\mathrm{Range\:of\:}x^2+2x-8:\quad \begin{bmatrix}\mathrm{Solution:}\:&\:f\left(x\right)\ge \:-9\:\\ \:\mathrm{Interval\:Notation:}&\:[-9,\:\infty \:)\end{bmatrix}$

The graph is also attached below.

Keywords: graph, domain, range

Learn more about domain and range from brainly.com/question/13856645

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8 0

3 years ago

Could someone help me with this?

MaRussiya [10]

Answer: o well i dont really knwo

Step-by-step explanation:

7 0

3 years ago

You want to know the type of music listened to by 15- to 20-year-olds. Which of the following surveys is biased?

Liula [17]

Arguably, all of them are at least somewhat biased, but the most biased would be <span>surveying people 15 to 20 years old leaving a concert </span> because being at a concert would be highly correlated with liking the type of music played at that concert.

6 0

4 years ago

What are some compatible numbers that i can do mently for 2242 divided by 12?

lawyer [7]

186.822222222 is ur answer.

3 0

4 years ago

On a coordinate plane, what is the distance between the point at (8, 7) and the point at (-9, 7)?

Lemur [1.5K]

Answer:

They are 17 units away from each other!

Step-by-step explanation:

Because they have the same y coordinate, this make us not have to do the formula. To find how far they are away, add the absolute value of each x coordinate. The answer is 17 units.

give me brainliest

6 0

3 years ago