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
Keith_Richards [23]
3 years ago
13

If f(x) = 2x^2 - x, find f(-3).

Mathematics
2 answers:
Tju [1.3M]3 years ago
7 0
F(x)=2x^2-x, x=-3

f(-3)=2(-3)^2-(-3)

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

f(-3)=18+3

f(-3)=21
ioda3 years ago
4 0
F(-3)  = 2(-3)^2 - (-3) =  2(9)+3 = 18 + 3 = 21
You might be interested in
Circle Q is centered at the origin with radius r. Point P(x, y) lies on circle Q. Make a conjecture. How can you find an equatio
salantis [7]

Answer:

The relation x^{2} +y^{2} =r^{2} is explained below.

Step-by-step explanation:

P(x, y) is a point on the circle. Q is the origin. Join PQ.

PQ is the radius.

Therefore, PQ = r

Draw PS perpendicular to the x-axis.

Now, ΔPQS is a right triangle.

By Pythagoros theorem,

PQ^{2}=PS^{2} +QS^{2}

r^{2}=x^{2} +y^{2}

x^{2} +y^{2} =r^{2}

5 0
3 years ago
Read 2 more answers
What does absolute value mean
Tanya [424]

Here's an example: If you have -9 and it asks for the absolute value of it, it means the opposite. The absolute value of -9 is positive 9.

3 0
3 years ago
Read 2 more answers
The diameter of a circle is 14 inches. Find the circumstance and area use 22/7
s344n2d4d5 [400]

Answer:

Circumference= 44 in

Area= 154 in²

Step-by-step explanation:

\boxed{circumference \: of \: circle = 2\pi  r}

Radius

= diameter ÷2

= 14 ÷2

= 7 in

Circumference of circle

= 2( \frac{22}{7} )(7)

= 44 in

\boxed{area \: of \: circle = \pi {r}^{2} }

Area of circle

=  \frac{22}{7} ( {7}^{2} )

= 154 in²

3 0
3 years ago
Identify the y-intercept for the line 4x – 2y = 4
stellarik [79]

Answer: (0,-2)

Step-by-step explanation: uhdehdwhehehhH

6 0
3 years ago
Which type of parent function is f(x) = |x|?
mariarad [96]
The absolute value parent function.
5 0
2 years ago
Other questions:
  • Divide £506 in the ratio 2:4:5
    11·2 answers
  • Evaluate the expression
    11·1 answer
  • 4x-6y-8=0 in function form
    11·1 answer
  • What are the steps to doing 9 1/6+6 1/4+ 4 5/6
    14·1 answer
  • Roger earns a 3% commission on sales of $9,500 as an electronic supplies wholesaler. What is his commission?
    10·1 answer
  • What is the solution of the inequality shown below? c + 9 greater than or equal to 1
    9·1 answer
  • -1 80/99 needs to get to a decimal
    12·1 answer
  • I need help with these 2 <br> i need to get a answer and i have to explain pls help! :(
    10·1 answer
  • The height of a weather balloon as it is launched can be represented by an exponential model in the form y = a* b^x where y is t
    14·1 answer
  • 1. set of whole numbers
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!