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Alexxandr [17]
3 years ago
7

Which equation represents the axis of symmetry of the function y=-2x^2+4x-6.

Mathematics
2 answers:
adell [148]3 years ago
5 0
Your  answer is x = 3
Westkost [7]3 years ago
5 0
For a quadratic of the form
  ax² +bx +c
the axis of symmetry is
  x = -b/(2a)

You have
  a = -2, b = 4
so
  x = -b/(2a) = -4/(-2*2)
  x = 1

The appropriate choice is
  b. x= 1
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One senior from the high schools will be selected at random. What is the probability that the senior selected will not be from h
DochEvi [55]

Using the probability concept, it is found that there is a 0.7361 = 73.61% probability that the senior selected will not be from high school b given that the senior responded with a choice other than college.

<h3>What is a probability? </h3>
  • A <em>probability </em>is given by the <u>number of desired outcomes divided by the number of total outcomes</u>.

Researching the problem on the internet, it is found that:

  • 538 seniors responded with a choice other than college.
  • Of those students, 99 + 83 + 49 + 31 + 63 + 71 = 396 are not from high school b.

Hence:

p = \frac{396}{538} = 0.7361

0.7361 = 73.61% probability that the senior selected will not be from high school b given that the senior responded with a choice other than college.

You can learn more about the probability concept at brainly.com/question/26148436

8 0
3 years ago
When trying to write an equation in standard form, you first have to find the slope if it is not given. If the slope ends up bei
Elan Coil [88]
It is neither one. Division by zero is undefined in math, so if the slope ends up being 5/0, the line has undefined slope.
3 0
3 years ago
Identify all the sets to which the number 0.41567. . . . belongs. Choose from rational, irrational, whole, and integer.
Shkiper50 [21]
It will belong only irrational. Hope it help!
6 0
3 years ago
Answer for question 3 A and B please. Please explain answers! 32 points
VladimirAG [237]

Answer:

y=50

x=30

z=100

Step-by-step explanation:

x+20=y

2y=z

x+y+z=180

x+y+2y=180

3y+x=180

-y+x=-20

4y=200

y=50

x=30

z=100

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ZanzabumX [31]
The answer is 2.1087
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