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
Natali5045456 [20]
3 years ago
10

I have no clue how to do this. I just need to pass my online math class.

Mathematics
2 answers:
Gennadij [26K]3 years ago
8 0
So, if you're trying to find the value of f(3), you substitute x=3 into the equation. However, you must be careful.


Which equation in the function do you substitute it into?

2x-9 or 4-x?

You would substitute x=3 into 2x-9.

Why?

See the inequalities at the end of each equation? Those tell you which values you substitute into the equation. Since x=3, you find which inequality it fits under.

It's not x>3 because 3 is not greater than 3. It would be x≤3 because 3 is a value less than or EQUAL to 3.

Now substitute the value x=3 into the correct equation.

2x-9
2(3)-9
6-9
-3

Therefore f(3) = -3.
Lerok [7]3 years ago
3 0
If F(3) then 3=x. So all you would do is substitute 3 in for x
You might be interested in
A manager for an insurance company believes that customers have the following preferences for life insurance products: 20% prefe
Zanzabum

Answer:

Yes the sales manager claims can be refuted based on the calculated percentages

Step-by-step explanation:

<u>From the table attached below </u>

Total number of customers = 200

<em>Calculated percentages</em><em> </em>

customers that prefer whole life insurance = 90 = 90/200 = 45%

customers that prefer universal life insurance = 15 = 15/200 = 7.5%

customers that prefer Annuities = 95 = 95/200 = 47.5

<em>Expected percentages:</em>

whole life = 20%

Universal life = 10%

Life Annuities = 70%

3 0
3 years ago
A ball is thrown from an initial height of 2 feet with an initial upward velocity of 29 ft/s. The balls height (h) [in feet] aft
nirvana33 [79]
The ball is at a height of 14 feet after 1.17 and 0.64 seconds.

This is an example of a quadratic equation. Write out the equation with 14 in the place of the height. Then, set it equal to zero.

14 = 2 + 29t - 16t^2

0 = -16t^2 + 29t -12

Now, we can use the quadratic equation to solve.
A = -16
B = 29
C = -12

You will get the solutions of 1.17 and 0.64.
5 0
3 years ago
Simplify the expression: –7(5 − u)
katovenus [111]

Answer:

-7(5-u)

Step-by-step explanation:

-7(5-u)

-7x5  -7x-u

-35+7u

7 0
3 years ago
Read 2 more answers
Express the radical using the imaginary unit, i.
MrMuchimi

Answer:

±3i

Step-by-step explanation:

Given the value ±√-9, we are to express the value using the imaginary number 'I'

±√-9 = ±√9×-1

= ±√9 × √-1

In complex number, √-1 = i

The expression becomes;

±√9 = ±3 × i

±√9 = ±3i

Hence the value in simplified form is ±3i

7 0
3 years ago
| 2p -1 | =45, what are the values of p?
Alex73 [517]

Answer:

p = 23       and p = -22

Step-by-step explanation:

| 2p -1 | =45

Absolute value equations have 2 solutions, one positive value and one negative

2p-1 = 45    and 2p-1 = -45

Add 1 to all sides

2p-1+1 = 45+1    and 2p-1+1 = -45+1

2p = 46                        2p = -44

Divide by 2

2p/2 = 46/2    and   2p/2  = -44/2

p = 23       and p = -22

5 0
3 years ago
Read 2 more answers
Other questions:
  • Is the answer to this question wrong?<br> A) No<br> B)Yes
    6·1 answer
  • A family uses 1,303 kWh of electric energy in a month. If the power company charges $0.08 per kilowatt hour, what is the total e
    7·1 answer
  • PLEASE HELP I WILL MARK YOU BRAINLIEST!!!!
    13·2 answers
  • How much higher is 500 than 400
    15·2 answers
  • Please I need help please
    11·2 answers
  • Part A
    8·2 answers
  • Two bicyclists were racing toward each other when they were 98 miles apart. Three hours later they did not meet yet and the dist
    7·1 answer
  • So the question on the pic
    11·1 answer
  • When solving secθ=−4.2 for 180°≤θ≤360°, how many possible answers are there?
    10·1 answer
  • (3,6) in a 180 degree rotation
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!