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
lianna [129]
3 years ago
7

For f(x)=2x^2+1 and g(x)= x^2-7, find (f+g)(x)

Mathematics
1 answer:
natta225 [31]3 years ago
4 0

f(x)=2x^2+1;\ g(x)=x^2-7\\\\(f+g)(x)=f(x)+g(x)=(2x^2+1)+(x^2-7)\\\\=2x^2+1+x^2-7=(2x^2+x^2)+(1-7)\\\\Answer:\ \boxed{C.\ 3x^2-6}

You might be interested in
Plot the vertex, focus, and directrix for the parabola represented by this equation. X=-1/12(y-2)^2+1
alukav5142 [94]

The vertex of the parabola is (1, 2), focus of the parabola is  (-2, 2), and directrix x = 4.

<h3>What is a parabola?</h3>

It is defined as the graph of a quadratic function that has something bowl-shaped.

We have a parabola equation:

\rm x = -\dfrac{1}{12}(y-2)^2+1

The standard form of the parabola:

\rm x = \dfrac{1}{4(f-h)}(y-k)^2+h

(h, k) is the vertex of the parabola and (f, k) is the focus.

\rm x = \dfrac{1}{4(-2-1)}(y-2)^2+1

h = 1, k =2, and f = -2

The directrix is x = 4

Thus, the vertex of the parabola is (1, 2), focus (-2, 2), and directrix x = 4.

Learn more about the parabola here:

brainly.com/question/8708520

#SPJ1

5 0
2 years ago
Which equations represent the line that is perpendicular to the line 5x − 2y = −6 and passes through the point (5, −4)? Check al
natka813 [3]
Find the slope of the line first:
5x - 2y = -6,
y = (5/2)x + 3;
Since we need a line that's perpendicular, m = - (2/5).

The only equation that has the slope of this m is 2x + 5y = -10;
8 0
3 years ago
Read 2 more answers
Can someone help me with this please?
Karolina [17]
For the first image can you give us the choices for each one?
5 0
3 years ago
The volume of a cone is 3πx3 cubic units and its height is x units. Which expression represents the radius of the cone’s base, i
dalvyx [7]

Answer:

<em>r=3x</em>

Step-by-step explanation:

<u>The Volume of a Cone</u>

The volume of a cone of radius r and height h is:

\displaystyle V=\frac{1}{3}\pi hr^2

We are given the volume of a cone is

V=3\pi x^3

Equating:

\displaystyle \frac{1}{3}\pi hr^2=3\pi x^3

Multiplying by 3:

\pi hr^2=9\pi x^3

Simplifying by pi:

hr^2=9 x^3

Since h=x:

xr^2=9 x^3

Dividing by x:

r^2=9 x^2

Taking square roots:

r=\sqrt{9 x^2}=3x

Thus: r=3x

5 0
3 years ago
Read 2 more answers
What is from 89 to 26
vekshin1

Answer:

63

Step-by-step explanation:

Just subtract 26 from 89.

4 0
3 years ago
Other questions:
  • Percy is 8 years older than Ginny. In ten years time he will be three times Ginnys present age. How old is Percy now?
    7·1 answer
  • Find the tenth term in each sequence:-<br><br> A. -2,-6,-18,-54<br><br> B. 7,9,12
    10·2 answers
  • what is the expression, equation, or inequality using x as your variable: The product of a number and its opposite, increased by
    7·1 answer
  • What is the sum of -1/2 + 2/3?
    9·2 answers
  • david a high school senior was wondering if the cost of attending college is worth the expense. he collected the following data
    6·2 answers
  • A stockholder owns 381.881 shares by the end of the year he had increased his number of shares by 14.814 what’s the new total of
    9·2 answers
  • RIGHT ANSWER WILL BE BRAINLIEST!!
    12·2 answers
  • ITS EASY PLS HELP!!!
    14·1 answer
  • Does someone know this one please :)
    7·1 answer
  • The price of a ticket to attend a show is $28.50. In addition to the ticket price, Laurence had to pay a service fee of 10% and
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!