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
Mama L [17]
3 years ago
15

Which is f(-1) for the function f(x)= 3x^2+9

Mathematics
2 answers:
blsea [12.9K]3 years ago
4 0

Answer:

C.  f(-1) =12

Step-by-step explanation:

f(x)= 3x^2+9

Let x=-1

f(-1) = 3(-1)^2 +9

      = 3(1)+9

      = 3+9

      = 12

f(-1) =12

olchik [2.2K]3 years ago
3 0
The answer is C. f(-1)=12

Hope this helps :)
You might be interested in
What is the initial term for the sequence<br> 36, 24, 16, ...?<br> ?
MariettaO [177]

Answer:

36

Step-by-step explanation:

The initial term is the very first term

36, 24, 16, ...?

has an initial term of 36

7 0
3 years ago
PLEASE HELP THIS IS A LINEAR EQUATIONS AND INEQUALITIES!!!
Scrat [10]
I’m pretty sure this is the answer.
You don’t have all of the answer choices listed, sorry

7 0
3 years ago
You have D dollars to buy fence to enclose a rectangular plot of land (see figure at right). The fence for the top and bottom co
alex41 [277]

The perimeter of the rectangular plot of land is given by the expression below

P=2x+2y

On the other hand, since the available money to buy fence is D dollars,

\begin{gathered} D=4(2x)+3(2y) \\ \Rightarrow D=8x+6y \\ D\rightarrow\text{ constant} \end{gathered}

Furthermore, the area of the enclosed land is given by

A=xy

Solving the second equation for x,

\begin{gathered} D=8x+6y \\ \Rightarrow x=\frac{D-6y}{8} \end{gathered}

Substituting into the equation for the area,

\begin{gathered} A=(\frac{D-6y}{8})y \\ \Rightarrow A=\frac{D}{8}y-\frac{3}{4}y^2 \end{gathered}

To find the maximum possible area, solve A'(y)=0, as shown below

\begin{gathered} A^{\prime}(y)=0 \\ \Rightarrow\frac{D}{8}-\frac{3}{2}y=0 \\ \Rightarrow\frac{3}{2}y=\frac{D}{8} \\ \Rightarrow y=\frac{D}{12} \end{gathered}

Therefore, the corresponding value of x is

\begin{gathered} y=\frac{D}{12} \\ \Rightarrow x=\frac{D-6(\frac{D}{12})}{8}=\frac{D-\frac{D}{2}}{8}=\frac{D}{16} \end{gathered}<h2>Thus, the dimensions of the fence that maximize the area are x=D/16 and y=D/12.</h2><h2>As for the used money,</h2>\begin{gathered} top,bottom:\frac{8D}{16}=\frac{D}{2} \\ Sides:\frac{6D}{12}=\frac{D}{2} \end{gathered}<h2>Half the money was used for the top and the bottom, while the other half was used for the sides.</h2>

7 0
1 year ago
6. 4p + 5 - 7p = -1​
Ivenika [448]

Answer: p=2

Step-by-step explanation: The first thing you should do is combine any like terms. For you this means combining 4p and -7p. This gives you -3p+5=-1. Then, subtract 5 on each side to eliminate the 5. This gives you -3p=-6. Divide by -3 on each side to allow the p to stand alone. This makes p=2.

8 0
3 years ago
Read 2 more answers
PLZ HELP, WILL MARK BRAINLEST
nata0808 [166]

Answer:

A and B

Step-by-step explanation:

3 0
3 years ago
Read 2 more answers
Other questions:
  • Matter is anything that
    11·2 answers
  • I need help ASAP! Is it A,b,c, or d?
    15·1 answer
  • Your annual clothing bill went up from $677.15 last year to $783.17 this year. What is your annual percent of increase from last
    14·1 answer
  • What are the x and y intercepts of the equation 2x-y=4
    12·1 answer
  • Three times the differnece of fredicos age and 4, increased by 7, is greater than 37. What are possible values of fredicos age?
    13·1 answer
  • Do you agree with Amur? Explain why.
    5·1 answer
  • 16 is a factor of 24.<br> O A. True<br> O B. False
    9·2 answers
  • Add. (6x2 – 2x) + (5x – 7)
    5·1 answer
  • How do you add 23+(2x)<br> ;()<br><br> freE PoInT
    12·1 answer
  • If $10,000 is invested at 6% annual interest compounded yearly, what is the account balance after 4 years, assuming no additiona
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!