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 certain food has a gluten ratio of 13\,\text{mg}13mg13, start text, m, g, end text of gluten per \text{L}Lstart text, L, end t
irina [24]

Answer:

The  gluten ratio in micrograms per milliliter is 13 µg/mL.

Step-by-step explanation:

Consider the provided information.

It is given that the food has a gluten ratio of 13 \frac{mg}{L}.

Now we need to convert gluten ratio in micrograms per milliliter

To convert mg to micro grams use the information shown below:

1 mg = 1000 micro-grams.

1 L = 1000 milliliter

Now, substitute 1 mg = 1000 micro-grams and 1 L = 1000 milliliter in the above ratio.

13( \frac{1000 \ micro-grams}{1000 \ milliliter} )= 13( \frac{micro-grams}{milliliter})

Hence, the  gluten ratio in micrograms per milliliter is 13 µg/mL.

5 0
3 years ago
Read 2 more answers
The manufacturer of a weight-training bench spends $15 to build each bench and sells them for $32. The manufacturer also has fix
nasty-shy [4]

Answer:

Step-by-step explanation:

C(x) = 15x + 25,500....cost function

R(x) = 32x .....revenue function

break even point (when they are equal)....so set them equal and solve for x

15x + 25,500 = 32x

25,500 = 32x - 15x

25,500 = 17x

25,500 / 17 = x

1500 = x.......so the break even point is when 1500 benches are sold

15x + 25,500 =                                   32x =

15(1500) + 25,500                              32(1500) =

22,500 + 25,500                                48,000

48,000

and after selling 1500 benches, they will both equal $48,000

7 0
3 years ago
What is fraction equivalent to 4/4? explain how you know
Helen [10]

Answer:

1, 2/2, 3/3, 5/5, etc.

Step-by-step explanation:

4/4 is a whole number because it's four over four. It can be any number that has the same number on top of it, or one.

I hoped this is what you wanted.

^_^

8 0
3 years ago
Two sevenths of the height of a sailboats tallest mast is 8 feet. How many feet high is the sailboats tallest mast
Rudik [331]

Answer:

The answer is 28 ft

Step-by-step explanation:

Since two sevenths of the height of a sailboats tallest mast is 8 feet, we keep adding two sevenths until we get its tallest mast.

2/7 = 8 ft

4/7 = 16 ft

6/7 = 24 ft

(Adding 1/7 which is 4 feet)

we get 7/7 = 28 ft

5 0
3 years ago
Please help me!!<br> I need to find the point!!!! (x,y)
natali 33 [55]

Answer:

x=2 y=-2

Step-by-step explanation:

you can solve this with the elimination process

-10x+6y=-32

-6x+6y=-24

you can multiply the bottom equation by a -1

-10x+6y=-32

-1(-6x+6y=-24)

making it

-10x+6y=-32

6x-6y=24

this allows you to cancel out 6y because 6y-6y=0

so you are left with

-10x=-32

6x=24

add them

-10x=-32

+6x=24

________

-4x=-8

divide by -4=2

x=2

plug that into the original equation

-10(2)+6y=-32

-6(2)+6y=-24

=

-20+6y=-32

-12+6y=-24

add them

-20+6y=-32

+-12+6y=-24

_________

-32+6y=-56

add 32

-56+32=-24

y=-24

4 0
2 years ago
Other questions:
  • Can someone help plzzzz need asap!!!
    13·2 answers
  • Out of every 240 containers of juice brought in a grocery store, 116 are orange juice. what fraction purchased is orange juice
    13·2 answers
  • Tom read a novel for 1 1/4 hours and comic books for 1 2/5 hours. <br><br> How long did Tom read?
    9·1 answer
  • If m B = 3x - 9 and m C = 39°, then what is the value of x?<br> A.10<br> B.44<br> C.47<br> D.50
    13·1 answer
  • Kyle has 31 trading cards. He buys a pack with 11 more cards. To play a game, he shares his cards evenly among himself and 5 fri
    13·1 answer
  • How do you find the original price when given the sale price and the percent of the discount
    11·1 answer
  • 24 pnts ⁉️‼️‼️ PIC ATTACHED HELPPPP PLZ NEED DONE BY DAY AFTER TMR ‼️‼️⁉️
    11·1 answer
  • Question 8 of 25<br> What is the domain of the graphed function? <br> a<br> b<br> c<br> d
    5·1 answer
  • PLEASE HELP ASAP Which of the following expressions is equivalent to the expression 42 + 90?
    15·1 answer
  • I just need help with number 2, i don’t understand
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!