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
zalisa [80]
3 years ago
11

Jordan is kayaking upstream. The following equation models his speed: f(x) = 2x2 − 4x − 9, where x is Anna's speed relative to l

and. What is the domain of the function? x ≥ 1 x ≤ −4 x ≥ −9 All real numbers
Mathematics
1 answer:
andrew11 [14]3 years ago
5 0

Answer:

All real numbers

Step-by-step explanation:

The given equation is:

f(x) = 2 {x}^{2}   - 4x - 9

where x is Ana's speed.

This is a quadratic function.

A quadratic function is a polynomial function.

All polynomial functions are are continuous and defined for all real values of x.

Therefore the domain of

f(x) = 2 {x}^{2}   - 4x - 9

is all real numbers.

You might be interested in
WILL GIVE BRAINLIEST!! 2) Match the graph with its function. Which is an example of growth/decay?
Neporo4naja [7]

The exponential growth is: f(x) = 15*(1.25)^x

And its graph is the first one.

The exponential decay is: f(x) = 250*(0.87)^x

And its graph is the second one.

<h3>How to identify the exponential equations?</h3>

The general exponential equation is of the form:

y = A*(b)^x

Where A is the initial value and b is the base.

  • If b > 1, then we have an exponential growth.
  • if 1 > b > 0, then we have an exponential decay.

Here the two functions are:

f(x) = 250*(0.87)^x

f(x) = 15*(1.25)^x

As you can see, the base for the first one is smaller than 1, then it is an exponential decay (and it has a decreasing graph, so the graph of this one is the second graph).

For the second function, we have the base b = 1.25, which is larger than 1, so it is an exponential growth, and its graph is an increasing graph, which is the first one.

If you want to learn more about exponential functions:

brainly.com/question/11464095

#SPJ1

6 0
2 years ago
What is the answer to the question above?
Taya2010 [7]
Whatever the answer is...whats the question

7 0
3 years ago
What is the approximate length of arc s on the circle below? Use 3.14 for pi. Round your answer to the nearest tenth.
astraxan [27]

Answer:

B 6.3

Step-by-step explanation:

r = 8

l = 2*3.14*r

l = 50.24

s=l/360*45

s≈6.3

7 0
2 years ago
Read 2 more answers
HELP ME FIND THE MEASURES OF THESE ANGLES PLEASE!!!!!!!!!!!!!!!!!!!!!
Oduvanchick [21]

1: 121, 2: 59, 3: 59

This is for the first graph because if you look at the bottom half of a circle is 180 so since one is 121 you just have to subtract 121 from 180 and you have your answer

5 0
2 years ago
Which of the functions graphed below is continuous?
vaieri [72.5K]

Answer:

The answer is the second one

5 0
3 years ago
Other questions:
  • PLEASE HELP!! iTS ALGEBRA
    8·1 answer
  • Dorrian graphed the distance, y, traveled by 2 bikes in x seconds. If the two bikes are racing a distance of 100 feet, which bik
    12·2 answers
  • During five days your drive 15.4 miles, 24.3 miles,10.4 miles,18.7 miles, and 7.5 miles. How many miles did you drive during tho
    13·2 answers
  • Given the following sets.
    12·1 answer
  • The function v(r)=4/3pir^3 can be used to find the volume of air inside a basketball given its radius. What does v(r) represent
    11·1 answer
  • The surface area of a cylinder
    14·1 answer
  • What are T-ratio ? explain<br><br>answer my question <br>plz​
    10·2 answers
  • The diagonal of a quadrilateral
    6·1 answer
  • Carla’s team won 3 of its 5 games played. Elena’s team won games at the same rate. How many games were played if Elena’s team wo
    14·2 answers
  • Natalie has 112 boxes she left 105 five boxes and she found 20 boxes how much dose she have?
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!