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
Elena-2011 [213]
3 years ago
14

If f(x)=3x^2-2x+5, find f(-2) a) -27 b) -11 c) -3 d) 21

Mathematics
1 answer:
Talja [164]3 years ago
3 0

Answer:

D

Step-by-step explanation:

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

f(-2) means that wherever you see an x on the right, you put in the value of -2 for the x.

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

f(-2) = 3(4) + 4 + 5

f(-2) = 12 + 9

f(-2) = 21

The answer is D

You might be interested in
The cost of a banquet can be calculated using the function
kotykmax [81]

Answer:

3 people attended the banquet

Step-by-step explanation:

The function is given as:

b = 75 + 15n where

b represents the total = 122

n represents the number of people attending = ??

If the total cost of the banquet is 122, how many people attended the banquet?

Hence,

122 = 75 + 15n

122 - 75 = 15n

47 = 15n

Divide both sides by 15

n = 47/15

n = 3.1333333333

Approximately to the nearest whole number = 3

Therefore, 3 people attended the banquet.

3 0
3 years ago
In 2019, the average temperature in some parts of the
Mice21 [21]

Answer:

-13.315° F

Step-by-step explanation:

Number of years from 2019 to 2050 is 2050 - 2019 = 31 years

Increase in temperature per year = 0.135

Increase in temperature for 31 years = 0.135*31 = 4.185

Average temperature in 2050 = -17.5 + 4.185 = -13.315° F

5 0
3 years ago
Read 2 more answers
Find the speed ..
r-ruslan [8.4K]
38
430
49
mph I think... maybe
6 0
3 years ago
What is the scale factor from ABC to DEF?
suter [353]

Answer:

0 so D

Step-by-step explanation:

The shape didnt change at all. All the sides are 5 for both triangles.

7 0
3 years ago
Read 2 more answers
solve the following system of equations.express your answer as an ordered pair in the format (a,b) with no spaces the number or
NeTakaya

Answer:

The solution is (-2,4)

Step-by-step explanation:

We'll solve the system

2x+5y=16

-5x-2y=2

using elimination by addition and subtraction.

Let's eliminate x first.  To do this, multiply the first equation by 5 and multiply the second equation by 2.  We get:

10x + 25y = 80

-10x  -  4y   = 4

----------------------

          21y = 84.  Thus, y = 84/21 = 4.

Subbing 4 for y in the second equation, we get

-5x -2(4) = 2, or

   -8 - 2 = 5x, or

     -10  = 5x.  Thus, x = -10/5 = -2.

The solution is (-2,4)

5 0
3 years ago
Other questions:
  • If x=4,what is -x.Solve the inequalitiy
    10·1 answer
  • Write the inverse of h(x) = e 2x h -1(x) =
    5·1 answer
  • a painter is painting a home. he uses a consistent amount of pain per day. at the beginning of the project he has 225 gallons of
    13·1 answer
  • 1/3 cup of flour is used in 5 dinner rolls. How many cups of flour are needed to make 3 dozen rolls?
    14·2 answers
  • A restaurant offers 10 appetizers and 12 main courses. In how many ways can a person order a​ two-course meal? Use the Fundament
    9·1 answer
  • HELP! Does anyone know which answer is correct? I would really appreciate it if someone knows!
    11·2 answers
  • Simplify: (3x^3+2x-3)-(4x^3-x^2+x
    5·2 answers
  • What’s -5 - 3(6x – 8) = -5x + 19
    10·2 answers
  • Angle 6 is congruent to angle 3. Angle 3 is congruent to angle 1. So angle 6 is congruent to angle 1
    9·1 answer
  • Which translations of the pentagon below will result in a diagram of the pentagon and its image with line symmetry?
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!