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Bogdan [553]
3 years ago
11

Which function is a quadratic function?

Mathematics
2 answers:
stira [4]3 years ago
7 0
D) y=-2x^2-x is quadratic, when graphed it will create a parabola.
Vladimir [108]3 years ago
4 0

Answer:

y = -2x² - x is quadratic function.

Step-by-step explanation:

Given : Function .

To find : Which function is a quadratic function.

Solution : We have given that functions .

Quadratic function: A quadratic function is one of the form f(x) = ax² + bx + c, where a, b, and c are numbers.

We can see from given options

y = -2x² - x in form of f(x) = ax² + bx + c,

Where, a = -2 , b = -1 c = 0

Therefore,  y = -2x² - x is quadratic function.

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Crank
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7 0
3 years ago
Read 2 more answers
A concert cleanup crew has 6 workers and one cleanup kit.
myrzilka [38]

Answer:

Option (D)

Step-by-step explanation:

At every 6 crew workers number of clean up kits required = 1

Therefore, for 1 crew worker number of kits required = \frac{1}{6}

And number of kits required for w workers = \frac{w}{6} = w ÷ 6

If w = 54

Number of kits required = \frac{54}{6}=9

If w = 60

Number of kits required = \frac{60}{6}=10

If w = 66

Number of kits required = \frac{66}{6}=11

Therefore, table given in Option (D) is the correct table.

6 0
3 years ago
Find the number of combinations for choosing two people from six.
Talja [164]
Number of combinations = (6x5) ÷ 2 = 15

Answer:There are 15 combinations
7 0
3 years ago
A score that is three standard deviations above the mean would have a z score of
tia_tia [17]

The value of z-score for a score that is three standard deviations above the mean is 3.

In this question,

A z-score measures exactly how many standard deviations a data point is above or below the mean. It allows us to calculate the probability of a score occurring within our normal distribution and enables us to compare two scores that are from different normal distributions.

Let x be the score

let μ be the mean and

let σ be the standard deviations

Now, x =  μ + 3σ

The formula of z-score is

z_{score} = \frac{x-\mu}{\sigma}

⇒ z_{score} = \frac{\mu + 3\sigma -\mu}{\sigma}

⇒ z_{score} = \frac{ 3\sigma }{\sigma}

⇒ z_{score} = 3

Hence we can conclude that the value of z-score for a score that is three standard deviations above the mean is 3.

Learn more about z-score here

brainly.com/question/13448290

#SPJ4

6 0
2 years ago
If mindy has 3.098 thousand dollars what is the fraction .ps no one is going to get it
Jet001 [13]
3 49/500 ???? I think??
7 0
3 years ago
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