1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Xelga [282]
3 years ago
11

Identify the domain and range of the function f(x) = 2x2 − 6x − 9.

Mathematics
1 answer:
mash [69]3 years ago
4 0
Range is the y values or ouputs
domain is inputs or x vvalues

we can use any x value
but at a certain y value, w can't go below that
find thatminimum
find the vertex
for
ax^2+bx+c
the x value of the vertex is
-b/2a
plug that in to the equaiton to get the y value

-b/2a=-(-6)/(2*2)=6/4=3/2

plug that in
2(3/2)^2-6(3/2)-9
2(9/4)-9-9
9/2-18
4.5-18
-13.5

domain=all real numbers
range=from -13.5 to positive infinity
You might be interested in
11 nickels to 11 dimes are what ratio?
castortr0y [4]

Answer: 11:11

Step-by-step explanation:

The ratio is 11 nickles to 11 dimes, Take away the names of the coins and there is your answer. (If i'm correct)

7 0
4 years ago
Read 2 more answers
Toni drives her car 99 mi on the highway on 3 gal of gas. At this rate how many miles can she drive on 11 gal of gas?
Helen [10]

Answer:

333.67 miles

Step-by-step explanation:

She drives her car 91 mi on 3 gal of gas

That’s 91 mi = 3 gal

How many miles can she drive on 11 gal of gas .

Let the mile she can drive by 11 gal of gas be A

At the same rate ,

91 mi = 3 gall

A mi = 11 gal

Cross multiply

A x 3 = 91 x 11

A x 3 = 1001

Divide both sides by 3

A x 3/3 = 1001/3

A = 333.67 miles

At the same rate she’ll drive 333.67 miles on 11 gal of gas

4 0
3 years ago
What is the area of a parallelogram with a base of 20 cm and a height of 12 cm?
AURORKA [14]
62.8cm^2 I think that's the answer 
6 0
3 years ago
See attachment for help.
Tema [17]

the correct answer is B.

7 0
3 years ago
What is 10 to the second power?
allochka39001 [22]
It would be 10x10 =100 or in other word 10 times itself. Also known as 10 with the 2 hanging over the 10.
3 0
3 years ago
Read 2 more answers
Other questions:
  • What is the measure of R?
    9·2 answers
  • Find the answer please
    8·1 answer
  • Is 1+4(3-10)-12x equivalent to -9
    14·1 answer
  • George’s age is three times that of his brother. When you add George’s age to his brother’s, you get 24. How old is each brother
    14·2 answers
  • Function that has <br> Domain: x≠-1<br> Range: y≠2
    7·1 answer
  • Normal simple question and pls follow​
    9·2 answers
  • Distribute: 3(2a – 4b)
    6·2 answers
  • You are selling t-shirt for $15 each as a fundraiser. You sold 17 less today then you did yesterday. Altogether you have raised
    13·1 answer
  • Please please help me
    9·2 answers
  • plz help plz help plz help plz help plz help plz help plz help plz help plz help plz help plz help plz help plz help plz help pl
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!