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
ivolga24 [154]
2 years ago
9

If f(x) = -2x2 + x-5, what is f(3)?

Mathematics
1 answer:
Ilia_Sergeevich [38]2 years ago
7 0

Answer:

f(3) = -20

Step-by-step explanation:

Replace each instance of x in 3^2x -9 =0 with 3:

f(x) = -2x2 + x-5 =  f(x) = -2x^2 + x-5 (" ^ " represents "exponentiation")

f(3) = -2(3)^2 + 3 - 5

f(3) = - 18 - 2 = -20

You might be interested in
What is the fourth term in the expansion of (x + 2y)^8?
Hatshy [7]
Base on my calculation and the simplification of the form and finding its 4th power of the x+2y, i came up with a solution and finally found an answer of B. 448x^5y^3, I hope i answer your questions directly and please feel free to ask for more and ask for clarifications
4 0
3 years ago
Please answer this correctly
aleksklad [387]

Answer:

63.2 = y

Step-by-step explanation:

The perimeter is the sum of all the sides

P = 7.8+ y+37.6 + y

171.8 = 7.8+ y+37.6 + y

Combine like terms

171.8 = 45.4 + 2y

Subtract 45.4 from both sides

171.8-45.4 = 45.4 + 2y -45.4

126.4 = 2y

Divide each side by 2

126.4/2 = 2y/2

63.2 = y

6 0
2 years ago
He following system of equations can be used to find the roots of the equation
AleksAgata [21]
In the default window of a graphing calculator, there is only one intersection that you see.

However, if you zoom out, you will see that they are 3 intersections to the pair of equations.
6 0
3 years ago
Read 2 more answers
Miss Hernandez has 17 tomato plants that she wants to plant in Rose she will put two plants and some rolls and one plant and the
Papessa [141]
She can plant 34 plants in all. If you multiply 34 and 2 you will get 34 and I think that is the answer.
5 0
3 years ago
Read 2 more answers
The distance between earth and moon is 384000000 m. this distance can be expressed as ____m
zalisa [80]

This distance can be expressed as 3.84× 10^{8} m.

What is distance with example?

  • Distance is a scalar quantity.
  • The distance of an object can be defined as the complete path travelled by an object.

Given the distance between the earth and the moon is 384000km

Representing in exponential notation,

=384000×1000m  [∵1km=1000m]

=384× 10^{6} m

=3.84× 10^{8} m

Learn more about distance

brainly.com/question/22698433

#SPJ4

<u>The correct question is -</u>

The distance between the Earth and the moon is approximately 384000 km.  this distance can be expressed as ____m.

5 0
2 years ago
Other questions:
  • How should I solve this to get the elapsed time
    8·2 answers
  • The measure of an angle is 63.7°. What is the measure of its supplementary angle?
    12·1 answer
  • Can someone help me answer and explain how to solve this?
    13·2 answers
  • How is multiplication using partial products different from multiplication using regrouping?
    11·2 answers
  • MZB = xo, what is the measure of a <br> supplement of LB?
    13·1 answer
  • Complete these ordered pairs for this equation.
    5·2 answers
  • My sister got stuck on these :&lt;<br> Can you tell me the answers?‍♀️
    10·1 answer
  • Help me !! ASAP
    7·2 answers
  • In Theresa's first 8 basketball games, she scored 7,4,3,6,8,3,1 and 5 points. In her
    5·1 answer
  • I really need help this is due today!!!!
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!